-
Andrea Quadri (INFN, Sez. di Milano)08/07/2017, 09:00Quantum Field and String TheoryParallel Talk
We present a systematic approach to the classification of the UV properties of higher dimensional operators spanned by $\Phi^\dagger \Phi$ and ordinary derivatives thereof (e.g. $\partial_\mu (\Phi^\dagger \Phi)\partial^\mu (\Phi^\dagger \Phi) , (\Phi^\dagger \Phi)^3, (\Phi^\dagger \Phi)^4, \dots$) in Higgs Effective Field Theories. The procedure is purely algebraic and thus...
Go to contribution page -
Kamila Kowalska (TU Dortmund)08/07/2017, 09:20Quantum Field and String TheoryParallel Talk
We explore a possibility to UV-complete the Standard Model in an asymptotically safe manner. We assume the existence of $N_F$ new types of vector-like fermions which minimally couple to $SU(3)_C$ and/or $SU(2)_L$ and modify the running of the corresponding gauge couplings in such a way that at least one of them is not asymptotically free anymore. If additionally the BSM fermions carry a...
Go to contribution page -
German Sborlini (Università di Milano, INFN Sezione Milano and IFIC-Valencia)08/07/2017, 09:40Quantum Field and String TheoryParallel Talk
We have recently proposed a new regularization framework based on the loop-tree duality theorem. This theorem allows to rewrite loop level amplitudes in terms of tree-level like structures and phase-space integrations. In consequence, it is possible to combine naturally real and virtual contributions at integrand level. Moreover, by introducing a proper momentum mapping, a complete local...
Go to contribution page -
Fulvia De Fazio (INFN Sezione di Bari), Fulvia De Fazio (Universita e INFN, Bari (IT))08/07/2017, 10:00Quantum Field and String TheoryParallel Talk
The thermalization process of an out-of-equilibrium boost-invariant strongly interacting non-Abelian
Go to contribution page
plasma is investigated using a holographic method. Boundary sourcing, a distortion of the boundary metric,
is employed to drive the system far from equilibrium. Thermalization is analyzed in the fully dynamical
system through nonlocal probes: the equal-time two-point correlation function of... -
Marco Bochicchio (INFN - National Institute for Nuclear Physics)08/07/2017, 10:20Quantum Field and String TheoryParallel Talk
Solving by a string theory the 't Hooft large-$N$ expansion of QCD is a long-standing problem that resisted all the attempts despite the advent of the celebrated gauge/gravity duality in the framework of string theory. We demonstrate that in the canonical string framework such a solution does not actually exist because an inconsistency arises between the renormalization properties of the...
Go to contribution page -
Prof. Anton Rebhan (Vienna University of Technology)08/07/2017, 10:40Quantum Field and String TheoryParallel Talk
The top-down holographic Witten-Sakai-Sugimoto model for low-energy QCD, augmented by finite quark masses, has recently been found to be able to reproduce the decay pattern of the scalar glueball candidate f0(1710) on a quantitative level. We show that this model predicts a narrow pseudoscalar glueball heavier than the scalar glueball and with a very restricted decay pattern involving eta or...
Go to contribution page -
Dimitri Colferai08/07/2017, 11:30Quantum Field and String TheoryParallel Talk
We generalize the semiclassical treatment of graviton radiation to
Go to contribution page
gravitational scattering at very large energies $\sqrt{s}\gg m_P$ and finite
scattering angles $\Theta_s$, so as to approach the collapse regime of impact
parameters $b \simeq b_c \sim R\equiv 2G\sqrt{s}$. Our basic tool is the
extension of the recently proposed, unified form of radiation to the string-based ACV
... -
Dr Marine Samsonyan (CERN)08/07/2017, 11:50Quantum Field and String TheoryParallel Talk
We present a D-brane realisation of the (non-)Abelian $\mathscr{N}=2^*$ theory. For $\Omega$ deformation we compute suitable topological amplitudes in this setup. These amplitudes are expressed as a double series expansion. The coefficients determine couplings of higher-dimensional operators in the effective supergravity action that involve powers of the anti-self-dual $\mathscr{N}=2$ chiral...
Go to contribution page -
Dr Alessio Marrani ("Enrico Fermi" Center, Roma, IT)08/07/2017, 12:10Quantum Field and String TheoryParallel Talk
A novel non-linear symmetry of black hole entropy is presented : Freudenthal duality, defined as an anti-involutive, non-linear map acting on symplectic spaces.
Go to contribution page
After a general introduction on some aspects of extended (super)gravity theories in four dimensions and the structure of their e.m. duality orbits, I will consider the e.m. duality Lie groups "of type E7", and the corresponding notion... -
Pascal Anastasopoulos (Unknown)08/07/2017, 12:30Quantum Field and String TheoryParallel Talk
We investigate light massive string states that appear at brane
Go to contribution page
intersections. They replicate the massless spectrum in a richer
fashion and may be parametrically lighter than standard Regge
excitations. We compute tri-linear Yukawa couplings of such
open-string states to massless ones and to one another. Due to
ambiguities in the normalisation of the vertex operators, that involve
twist...
Choose timezone
Your profile timezone: