BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:The large N limit of SU(N) gauge theories
DTSTART;VALUE=DATE-TIME:20041015T090000Z
DTEND;VALUE=DATE-TIME:20041015T100000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-a044322@cern.ch
DESCRIPTION:A numerical study of the string tension and of the masses of t
 he lowest-lying glueballs is performed in SU(N) \ngauge theories for 2 ≤
  N ≤  8 in D = 3+1 and 2 ≤  N ≤  6 in D = 2+1.  It is shown that for
  the string \ntension a smooth N -> ∞ limit exists that depends only on 
 the 't Hooft coupling λ = g2 N. An \nextrapolation of the masses of the l
 ightest glueballs to N = ∞ using a power series in 1/N2 \nshows that the
  leading correction to the infinite N value accounts for finite N effects 
 for N at least as small as \n3 and all the way down to N = 2 in many cases
 .  k-string tension ratios and possible issues connected with \ncorrelatio
 n functions at large N are also discussed.\n\nhttp://indico.cern.ch/confer
 enceDisplay.py?confId=a044322
LOCATION:CERN TH Auditorium
URL:http://indico.cern.ch/conferenceDisplay.py?confId=a044322
END:VEVENT
BEGIN:VEVENT
SUMMARY:Perturbative chiral violations in domain-wall fermions
DTSTART;VALUE=DATE-TIME:20070209T100000Z
DTEND;VALUE=DATE-TIME:20070209T110000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-a0726@cern.ch
DESCRIPTION:We calculate in lattice perturbation theory\, using the exact 
 propagators corresponding to the setting of a finite number of points in t
 he fifth dimensions\, the residual mass and other matrix elements which me
 asure the breaking of chiral symmetry in domain-wall fermions. We present 
 results for several choices of the domain-wall parameters.\n\nhttp://indic
 o.cern.ch/conferenceDisplay.py?confId=a0726
LOCATION:CERN TH Auditorium
URL:http://indico.cern.ch/conferenceDisplay.py?confId=a0726
END:VEVENT
BEGIN:VEVENT
SUMMARY:New structure in the phase diagram of the Twisted Eguchi-Kawai mod
 el
DTSTART;VALUE=DATE-TIME:20070914T090000Z
DTEND;VALUE=DATE-TIME:20070914T100000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-21007@cern.ch
DESCRIPTION:We investigate numerically the phase structure of the Twisted 
 Eguchi-Kawai (TEK) model \nin four dimensions. In numerical simulations of
  the TEK model at zero temperature and \nlarge enough SU(N) gauge groups\,
  we identify new phases at intermediate lattice\ncouplings where the Z_N^4
  symmetry of the model is spontaneously broken. This effect\ncan be explai
 ned by the contribution of diagonal configurations with  collapsed \neigen
 values\, which are particular cases of non-surviving  fluxons in the termi
 nology of \nvan Baal. We also investigate TEK models at finite temperature
  using anisotropic lattice\ncouplings\, where in particular we find surviv
 ing k=1 fluxons contributing at large \nanisotropies.\n\nhttp://indico.cer
 n.ch/conferenceDisplay.py?confId=21007
LOCATION:CERN TH Theory Conference Room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=21007
END:VEVENT
BEGIN:VEVENT
SUMMARY:Physical B-meson matrix elements from finite volume lattice calcul
 ations
DTSTART;VALUE=DATE-TIME:20071026T073000Z
DTEND;VALUE=DATE-TIME:20071026T083000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-22786@cern.ch
DESCRIPTION:Lattice calculations of B-meson's matrix elements represent a 
 challenging problem. The presence of both a high energy scale\, m_b\, and 
 a low energy scale\, m_{u\,d} or Lambda_{QCD}\, requires the discretizatio
 n of large physical volumes with very small lattice spacings\, hardly affo
 rdable in current lattice simulations.\nI will discuss a finite size scali
 ng technique devised to cope with such a two-scale problem and\, in partic
 ular\, its application to the calculation of the hadronic form factors ent
 ering into the decay rates of the processes B --> D l nu.\n\nhttp://indico
 .cern.ch/conferenceDisplay.py?confId=22786
LOCATION:CERN TH Theory Conference Room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=22786
END:VEVENT
BEGIN:VEVENT
SUMMARY:Correlations in Minimal Liouville Theory. Review and  comparison w
 ith Matrix Model approach
DTSTART;VALUE=DATE-TIME:20080215T100000Z
DTEND;VALUE=DATE-TIME:20080215T113000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-28705@cern.ch
DESCRIPTION:Special Seminar\n\nhttp://indico.cern.ch/conferenceDisplay.py?
 confId=28705
LOCATION:CERN TH Theory Conference Room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=28705
END:VEVENT
BEGIN:VEVENT
SUMMARY:The running of the coupling in SU(N) pure gauge theories
DTSTART;VALUE=DATE-TIME:20080530T090000Z
DTEND;VALUE=DATE-TIME:20080530T100000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-34795@cern.ch
DESCRIPTION:The running of the coupling is studied in SU(4) gauge theory u
 sing the Schroedinger functional technique. Up to energies of the order of
  the square root of the string tension\, the running is found to agree wit
 h the two-loop perturbative formula. Relating the perturbative to the non-
 perturbative regime of the running and converting to the MS-bar scheme all
 ows one to extract the ratio Lambda/sqrt(sigma). The result is then used i
 n combination with similar results present in the literature for SU(2) and
  SU(3) to extract Lambda/sqrt(sigma) in the large N limit. With the assump
 tion that O(1/N^2) terms correctly describe the data from N=2 onwards\, ou
 r best fit parameterisation for the ratio Lambda/sqrt(sigma) is 0.528(40) 
 + 0.18(36)/N^2. Our results agree with a recent study of the same quantity
  performed using the Parisi mean field scheme as an intermediate scheme.\n
 \nhttp://indico.cern.ch/conferenceDisplay.py?confId=34795
LOCATION:CERN Room A
URL:http://indico.cern.ch/conferenceDisplay.py?confId=34795
END:VEVENT
BEGIN:VEVENT
SUMMARY:2d N=(2\,2) SYM on computer
DTSTART;VALUE=DATE-TIME:20090213T100000Z
DTEND;VALUE=DATE-TIME:20090213T110000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-50832@cern.ch
DESCRIPTION:We numerically studied supersymmetric Ward-Takahashi identitie
 s ("PCSC" relation) in Sugino's lattice formulation of the two-dimensional
  N=(2\,2) supersymmetric Yang-Mills theory with a scalar mass term. We obt
 ained a clear evidence that full supersymmetry is restored in the continuu
 m limit of this lattice model. This is a firm demonstration of\, for the f
 irst time to our knowledge\, realization of supersymmetry in lattice gauge
  theory. As physical application\, we numerically observed that certain co
 rrelation functions related by supersymmetry exhibit a power-like behavior
  (which implies the absence of mass gap) and the static potential between 
 probe charges in the fundamental representation is linearly-rising. The la
 tter confining behavior appears distinct from a theoretical  conjecture ma
 de in the '90s by Armoni\, Frishman and Sonnenschein\, although the static
  potential for larger distance has to be systematically explored to conclu
 de real asymptotic behavior.\n\nhttp://indico.cern.ch/conferenceDisplay.py
 ?confId=50832
LOCATION:CERN Room B
URL:http://indico.cern.ch/conferenceDisplay.py?confId=50832
END:VEVENT
BEGIN:VEVENT
SUMMARY:Flux-tubes as strings
DTSTART;VALUE=DATE-TIME:20090313T100000Z
DTEND;VALUE=DATE-TIME:20090313T110000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-52503@cern.ch
DESCRIPTION:I will describe a lattice study that aims to understand the sp
 ectrum of closed flux-tubes in SU(N) gauge theories. I will focus on the w
 ay string  energies depends on the string length and\, if time allows\, on
  the flux the string carries. We find that the spectrum is well described 
 by a Nambu-Goto model down to relatively short distances and moderately hi
 gh energies.\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=52503
LOCATION:CERN TH Theory Conference Room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=52503
END:VEVENT
BEGIN:VEVENT
SUMMARY:Orientifold planar equivalence: center symmetry and string states
DTSTART;VALUE=DATE-TIME:20091023T080000Z
DTEND;VALUE=DATE-TIME:20091023T090000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-68516@cern.ch
DESCRIPTION:A multicolor version of QCD can be defined by choosing fermion
 s in the antisymmetric representation of the gauge group (orientifold theo
 ry). In the large-N limit and in a common sector\, the orientifold theory 
 has been proved to be equivalent to YM with fermions in the adjoint repres
 entation (orientifold planar equivalence). In particular one-flavor QCD be
 comes equivalent to SuperYM in this unconventional large-N limit. After pr
 esenting the first numerical investigations of the orientifold theory\, I 
 will mainly focus on analytical results\, partly obtained by strong-coupli
 ng lattice techniques. I will discuss how the different center symmetry of
  the two theories does not contradict orientifold planar equivalence. On t
 he other hand\, orientifold planar equivalence and supersymmetry predict t
 he equality of the Regge slopes for mesons and baryons in the orientifold 
 theory.\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=68516
LOCATION:CERN 1-1-025
URL:http://indico.cern.ch/conferenceDisplay.py?confId=68516
END:VEVENT
BEGIN:VEVENT
SUMMARY:Critical slowing down of lattice QCD simulations
DTSTART;VALUE=DATE-TIME:20100108T090000Z
DTEND;VALUE=DATE-TIME:20100108T100000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-77353@cern.ch
DESCRIPTION:The algorithmic progress of recent years makes the study of ch
 arm quark physics seem within the reach of lattice QCD. A first calculatio
 n in 2008\, which claimed full control of systematic errors\, found a disc
 repancy to the experimental value of $f_{D_s}$ at the time and speculation
 s about physics beyond the standard model have been made.\nThis talk is ab
 out problems of such simulations. For a reliable treatment of charm quarks
 \, fine lattices have to be used. With modern algorithms\, however\, we ob
 serve a very severe critical slowing down as the lattice spacing is decrea
 sed\, especially in the topological charge. Because of that\, simulations 
 of full QCD with a lattice spacing below 0.05fm seem currently out of reac
 h.\nTo better quantify this problem and the influence of various parameter
 s of the simulation\, we performed an extensive study in pure gauge theory
 . We investigated the slowing down in several observables\, in particular 
 Wilson loops and the topological charge\, and studied the consequences for
  the estimation of their errors.\n\nhttp://indico.cern.ch/conferenceDispla
 y.py?confId=77353
LOCATION:CERN TH Theory Conference Room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=77353
END:VEVENT
BEGIN:VEVENT
SUMMARY:Renormalization of minimally doubled fermions
DTSTART;VALUE=DATE-TIME:20100129T093000Z
DTEND;VALUE=DATE-TIME:20100129T103000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-79049@cern.ch
DESCRIPTION:Minimally doubled fermions have been proposed as a strictly lo
 cal discretization of the QCD quark action\, which also preserves chiral s
 ymmetry at finite cut-off. We study the renormalization and mixing propert
 ies of two particular realizations of minimally doubled fermions in lattic
 e perturbation theory at one loop. We also construct conserved axial-vecto
 r currents\, which have a simple form involving only nearest-neighbors sit
 es.\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=79049
LOCATION:CERN TH Theory Conference Room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=79049
END:VEVENT
BEGIN:VEVENT
SUMMARY:k-string tension and the 1/N expansion
DTSTART;VALUE=DATE-TIME:20101210T100000Z
DTEND;VALUE=DATE-TIME:20101210T110000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-115574@cern.ch
DESCRIPTION:I will address the question of whether the large-N expansion o
 f the k-string tension in pure SU(N) gauge theories must contain only even
  powers of 1/N (as in the sine law)\, or whether odd-power contributions c
 an also appear (as in Casimir scaling). A naive argument would suggest tha
 t\, since the Wilson loops in the reducible tensorial representation conta
 in only even powers of 1/N\, the same should be true for the k-string tens
 ion. I will show that this argument is not correct and in general 1/N corr
 ections are expected. The cancellation of the odd powers in 1/N for the te
 nsorial reducible representation is non trivial and it is generated by ver
 y different mechanisms in the open and closed string channels. I will subs
 tantiate this picture with a computation in the framework of the strong-co
 upling expansion for the lattice-discretized theory and I will discuss wha
 t results are expected to be valid in the continuum limit.\n\nhttp://indic
 o.cern.ch/conferenceDisplay.py?confId=115574
LOCATION:CERN TH common room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=115574
END:VEVENT
BEGIN:VEVENT
SUMMARY:Lattice QCD determination of the Wilson Chiral Perturbation Theory
  low-energy constant c2 on CLS lattices
DTSTART;VALUE=DATE-TIME:20110121T100000Z
DTEND;VALUE=DATE-TIME:20110121T110000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-114762@cern.ch
DESCRIPTION:I will review a current effort within the ALPHA collaboration 
 to determine the low energy constant c_2 from Wilson Chiral Perturbation T
 heory (WChPT) on CLS lattices. We employ a novel method that compares the 
 ratio of single-pion and two-pion correlation functions on the lattice and
  in WChPT. Preliminary results obtained at a=0.9\, 0.7 fm for pion masses 
 down to 250MeV indicate that c_2*a^2 is small.\n\nhttp://indico.cern.ch/co
 nferenceDisplay.py?confId=114762
LOCATION:CERN TH Theory Conference Room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=114762
END:VEVENT
BEGIN:VEVENT
SUMMARY:k-strings from the lattice
DTSTART;VALUE=DATE-TIME:20110128T100000Z
DTEND;VALUE=DATE-TIME:20110128T110000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-115175@cern.ch
DESCRIPTION:We review lattice simulations aimed at extracting properties o
 f k-strings in SU(N) gauge theories\, with emphasis on two still open prob
 lems (the order of the leading correction of k-string tensions in a 1/N ex
 pansion and the decay of unstable strings) and we show how these problems 
 are intertwined. Finally\, we discuss recent progress made possible by alg
 orithmic advances.\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=11
 5175
LOCATION:CERN TH Theory Conference Room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=115175
END:VEVENT
BEGIN:VEVENT
SUMMARY:A brief introduction to the gradient flow in non-abelian gauge the
 ories
DTSTART;VALUE=DATE-TIME:20110218T100000Z
DTEND;VALUE=DATE-TIME:20110218T110000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-120745@cern.ch
DESCRIPTION:Somewhat surprisingly\, the gradient flow in non-abelian gauge
  theories (including QCD) does not require renormalization. The flow equat
 ion thus\ngenerates a one-parameter family of smooth gauge fields\, whose 
 correlation functions are automatically finite. At the non-perturbative le
 vel\, the construction provides interesting new ways to probe the theory f
 rom short to long distances.\n\nhttp://indico.cern.ch/conferenceDisplay.py
 ?confId=120745
LOCATION:CERN TH common room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=120745
END:VEVENT
BEGIN:VEVENT
SUMMARY:N_f=2+1+1 lattice QCD simulations with twisted mass fermions
DTSTART;VALUE=DATE-TIME:20110225T100000Z
DTEND;VALUE=DATE-TIME:20110225T110000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-114853@cern.ch
DESCRIPTION:I will present the status of the simulation program with N_f=2
 +1+1 flavours of Wilson twisted mass fermions currently being carried out 
 by the ETM collaboration. A description of the simulation setup and some f
 irst physical results will be given given together with a preliminary acco
 unt of the more prominent systematic effects. Finally\, I will report on t
 he layout of the renormalisation program.\n\nhttp://indico.cern.ch/confere
 nceDisplay.py?confId=114853
LOCATION:CERN TH Theory Conference Room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=114853
END:VEVENT
BEGIN:VEVENT
SUMMARY:Yang-Mills thermodynamics in the large-N limit
DTSTART;VALUE=DATE-TIME:20110304T100000Z
DTEND;VALUE=DATE-TIME:20110304T110000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-114854@cern.ch
DESCRIPTION:Heavy ion collision experiments reveal that\, at temperatures 
 of the order of 200 MeV\, hadronic matter turns into a nearly inviscid\, s
 trongly coupled plasma. While perturbative QCD calculations are not reliab
 le in this regime\, it is expected that some thermodynamic properties of t
 he plasma can be worked out using techniques based on the conjectured dual
 ity between gauge and string theories. In particular\, these computations 
 undergo dramatic simplifications when the rank of the gauge group is taken
  to infinity. In turn\, the relevance of this limit for the physical case 
 of QCD with N=3 colors can be investigated via computer simulations based 
 on the lattice formulation of QCD. In this talk\, I shall present some lat
 tice results for equilibrium thermodynamic observables in SU(N) gauge theo
 ries with different numbers of colors: the results reveal a very mild depe
 ndence on N\, and are compared with predictions derived from holographic m
 odels developed in string theory.\n\nhttp://indico.cern.ch/conferenceDispl
 ay.py?confId=114854
LOCATION:CERN TH common room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=114854
END:VEVENT
BEGIN:VEVENT
SUMMARY:The spectral density of the Wilson Dirac operator
DTSTART;VALUE=DATE-TIME:20110311T100000Z
DTEND;VALUE=DATE-TIME:20110311T110000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-120747@cern.ch
DESCRIPTION:The low-energy properties of the spectral density of the QCD D
 irac operator are related to the spontaneous breaking of chiral symmetry v
 ia the so-called Banks-Casher relation. For lattice discretizations which 
 do not preserve exact chiral symmetry\, such as the Wilson discretization\
 , it is important to investigate how lattice artifacts distort the expecte
 d continuum behaviour of the low-energy spectrum. A tool which can be adop
 ted to study this problem is the Wilson Chiral Perturbation Theory\, where
  discretization effects are included in the low-energy effective Lagrangia
 n. I will briefly introduce this framework and present some analytic resul
 ts which could be useful in interpreting lattice data.\n\nhttp://indico.ce
 rn.ch/conferenceDisplay.py?confId=120747
LOCATION:CERN TH common room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=120747
END:VEVENT
BEGIN:VEVENT
SUMMARY:Lattice calculation of QCD isospin breaking effects
DTSTART;VALUE=DATE-TIME:20110527T090000Z
DTEND;VALUE=DATE-TIME:20110527T100000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-131578@cern.ch
DESCRIPTION:The present theoretical accuracy on some phenomenologically re
 levant light meson's observables (such as Kaon's decay constants\, etc.) c
 annot be improved without taking into account the difference between the u
 p and down quark masses. In order to calculate on the lattice the so-calle
 d "QCD isospin breaking effects" one needs to address both theoretical and
  numerical problems. In this talk I discuss a general method to calculate 
 these effects and show preliminary results for FK and for the decay rates 
 of Kl3 semileptonic decays.\n\nhttp://indico.cern.ch/conferenceDisplay.py?
 confId=131578
LOCATION:CERN TH Theory Conference Room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=131578
END:VEVENT
BEGIN:VEVENT
SUMMARY:The fermion-bag approach to four-fermion field theories
DTSTART;VALUE=DATE-TIME:20110530T090000Z
DTEND;VALUE=DATE-TIME:20110530T100000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-138896@cern.ch
DESCRIPTION:It is well known that the Hybrid Monte Carlo (HMC) method enco
 unters many difficulties in approaching the chiral limit in QCD and other 
 four-fermion field theories including models of Graphene. In this talk we 
 present a new approach to four-fermion field theories. The basic idea is t
 o identify the optimal unpaired fermionic degrees of freedom which lead to
  sign problems. These degrees of freedom\, which resemble a bag in certain
  parameter regions\, are refered to as fermion bags. A resummation of all 
 fermion world lines inside a bag is usually sufficient to solve the sign p
 roblem in many interesting cases. This then leads to algorithms that are e
 fficient at both weak and strong couplings even in the chiral limit.\n\nht
 tp://indico.cern.ch/conferenceDisplay.py?confId=138896
LOCATION:CERN TH Theory Conference Room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=138896
END:VEVENT
BEGIN:VEVENT
SUMMARY:The scaling of lattice QCD simulations towards the continuum limit

DTSTART;VALUE=DATE-TIME:20110701T090000Z
DTEND;VALUE=DATE-TIME:20110701T100000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-143405@cern.ch
DESCRIPTION:The behavior of algorithms for lattice QCD simulations towards
  the continuum is studied. We show that we cannot expect the Hybrid Monte 
 Carlo algorithm to follow the free field scaling in an interacting theory.
 \nWe provide evidence that the HMC falls into the universality class of th
 e\nLangevin equation if open boundary conditions are imposed.\n\nhttp://in
 dico.cern.ch/conferenceDisplay.py?confId=143405
LOCATION:CERN TH common room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=143405
END:VEVENT
BEGIN:VEVENT
SUMMARY:Finding the conformal window on the lattice
DTSTART;VALUE=DATE-TIME:20111010T090000Z
DTEND;VALUE=DATE-TIME:20111010T100000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-157943@cern.ch
DESCRIPTION:There has recently been interest in quantum field theories wit
 h a non-trivial infrared fixed point. In these theories the coupling flows
  to a constant value at large distances and to zero at small distances. Th
 ey have applications in beyond the standard model phenomenology\, such as 
 technicolor models and unparticles. It is also interesting from a purely t
 heoretical standpoint to understand the phase structure of Yang-Mills theo
 ries in the space of the number of colors and fermion flavors. I present l
 attice studies of the running coupling of SU(2) gauge theories with fermio
 ns in the fundamental and adjoint representations. The results using unimp
 roved lattice actions show large discretization errors and we have used im
 proved lattice actions to reduce these errors.  Using the improved actions
  we produce significantly different results.\n\nhttp://indico.cern.ch/conf
 erenceDisplay.py?confId=157943
LOCATION:CERN TH Theory Conference Room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=157943
END:VEVENT
BEGIN:VEVENT
SUMMARY:Conformal fixed point of SU(3) gauge theory with 12 fundamental fe
 rmions
DTSTART;VALUE=DATE-TIME:20111111T100000Z
DTEND;VALUE=DATE-TIME:20111111T110000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-160527@cern.ch
DESCRIPTION:We study the infrared properties of SU(3) gauge theory coupled
  to 12\nmassless Dirac fermions in the fundamental representation.\nThere 
 are some controversial works for the infrared behavior in this theory.\nWe
  measure the renormalized running coupling constant in the Twisted\nPolyak
 ov loop scheme on the lattice. From the step-scaling analysis\,\nwe find t
 hat the infrared behavior of the theory is governed by a\nnon-trivial fixe
 d point.\nAnd we derive some critical exponents around the nontrivial fixe
 d point.\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId=160527
LOCATION:CERN TH common room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=160527
END:VEVENT
BEGIN:VEVENT
SUMMARY:QCD thermodynamics with Wilson fermions
DTSTART;VALUE=DATE-TIME:20111121T100000Z
DTEND;VALUE=DATE-TIME:20111121T110000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-160528@cern.ch
DESCRIPTION:QCD is investigated at finite temperature using Wilson fermion
 s in the fixed scale approach. A 2+1 flavor stout and clover improved acti
 on is used at four lattice spacings allowing for control over discretizati
 on errors. The light quark masses in this first study are fixed to heavier
  than physical values. The renormalized chiral condensate\, quark number s
 usceptibility and the Polyakov loop is measured and the results are compar
 ed with the staggered formulation in the fixed N_t approach. The Wilson re
 sults at the finest lattice spacing agree nicely with the staggered result
 s at the highest N_t.\n\nhttp://indico.cern.ch/conferenceDisplay.py?confId
 =160528
LOCATION:CERN TH Theory Conference Room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=160528
END:VEVENT
BEGIN:VEVENT
SUMMARY:The Realization of the Sharpe-Singleton scenario
DTSTART;VALUE=DATE-TIME:20120608T090000Z
DTEND;VALUE=DATE-TIME:20120608T100000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-190301@cern.ch
DESCRIPTION:We will discuss the new insights on the phase structure of lat
 tice QCD with Wilson fermions which has emerged from the analytic computat
 ion of spectrum of the Wilson Dirac operator at nonzero lattice spacing. I
 n\naddition to the spontaneous breaking of chiral symmetry\, new phase str
 uctures known as the Aoki phase and the Sharpe-Singleton scenario can domi
 nate. The new phase transitions arise due to the interplay between the con
 tinuum and the chiral limit in lattice QCD with Wilson fermions.\nThe new 
 analytic results are obtained within Wilson chiral perturbation theory and
  explain\, in particular\, a long standing puzzle between the phase struct
 ure observed in quenched and unquenched lattice simulations.\n\nhttp://ind
 ico.cern.ch/conferenceDisplay.py?confId=190301
LOCATION:CERN TH common room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=190301
END:VEVENT
BEGIN:VEVENT
SUMMARY:Non-trivial theta-vacuum effects in the 2-d O(3) model
DTSTART;VALUE=DATE-TIME:20120802T120000Z
DTEND;VALUE=DATE-TIME:20120802T130000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-201065@cern.ch
DESCRIPTION:The 2-d O(3) model is investigated on the lattice as a functio
 n of the vacuum-angle theta. A simple but highly optimized lattice action 
 ensures that cut-off effects are extremely small. Remarkably\, dislocation
  lattice artifacts do not spoil the non-trivial continuum limit and there 
 are different continuum theories for each value of theta. A precise study 
 of the step scaling function confirms the conjectured exact S-matrix of th
 e 2-d O(3) model at theta = pi\, which represents a conformal fixed point.
  The essential features of walking technicolor models are shared by this t
 oy model and are investigated in accurate numerical simulations of the slo
 wly walking coupling and the resulting beta-function.\n\nhttp://indico.cer
 n.ch/conferenceDisplay.py?confId=201065
LOCATION:CERN TH common room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=201065
END:VEVENT
BEGIN:VEVENT
SUMMARY:phi^6 theory in 3D
DTSTART;VALUE=DATE-TIME:20120803T090000Z
DTEND;VALUE=DATE-TIME:20120803T100000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-202041@cern.ch
DESCRIPTION:Recent studies of lattice gauge theories have focused on the i
 dentification of IR fixed points in four dimensions as the number of color
 s and flavors are varied. Such studies rely on the existence of a conjectu
 red RG flow\, and are potentially affected by systematic errors. The phi^6
  theory in three dimensions is an interesting toy model where some of thes
 e questions can be addressed.  I will review some analytic results\, and p
 resent their extension to the case of a theory regulated on a lattice. Fin
 ally I will discuss what can be learned from the toy model\, and its utili
 ty for four-dimensional studies.\n\nhttp://indico.cern.ch/conferenceDispla
 y.py?confId=202041
LOCATION:CERN TH common room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=202041
END:VEVENT
BEGIN:VEVENT
SUMMARY:Precise constraints on CP violation from lattice QCD
DTSTART;VALUE=DATE-TIME:20130215T100000Z
DTEND;VALUE=DATE-TIME:20130215T110000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-235988@cern.ch
DESCRIPTION:Lattice QCD allows for a systematic reduction of the error on 
 crucial non-perturbative input to constraints on the standard model.  A b
 rief review of related challenges and recent progress on precise constrain
 ts on CP violation from kaon and B physics is given.\n\nhttp://indico.cern
 .ch/conferenceDisplay.py?confId=235988
LOCATION:CERN TH common room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=235988
END:VEVENT
BEGIN:VEVENT
SUMMARY:Yang-Mills Couplings in Numerical Stochastic Perturbation Theory
DTSTART;VALUE=DATE-TIME:20130618T090000Z
DTEND;VALUE=DATE-TIME:20130618T100000Z
DTSTAMP;VALUE=DATE-TIME:20130619T033003Z
UID:indico-event-254825@cern.ch
DESCRIPTION:Recently\, the gradient flow has attracted a considerable amou
 nt of attention in the lattice QCD community. The hope is that this techni
 que will enable us to determine a host of important observables with unpre
 cedented precision. The running coupling is an important example\, the kno
 wledge of which with a high accuracy is most desirable since its error ent
 ers in many other quantities. Its perturbative expansion is an important i
 ngredient for a precise determination.\nHowever\, the diagrammatic approac
 h is particularly cumbersome when employing the gradient flow\, which make
 s numerical stochastic perturbation theory a promising candidate for a met
 hod to perform the required calculations. We will report on the status of 
 an ongoing effort to compute the gradient flow coupling in NSPT.\n\nhttp:/
 /indico.cern.ch/conferenceDisplay.py?confId=254825
LOCATION:CERN TH common room
URL:http://indico.cern.ch/conferenceDisplay.py?confId=254825
END:VEVENT
END:VCALENDAR