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54th Schladming Winter School of Theoretical Physics

21–26 Feb 2016
Schladming, Austria
Europe/Zurich timezone
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Contribution List

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  1. 21. Advances in Quantum Field Theory. Lecture I
    21/02/2016, 10:00
  2. 25. Asymptotic Safety. Lecture I
    21/02/2016, 11:00
  3. 22. Gravity and the Quantum. Lecture I
    21/02/2016, 16:45
  4. 28. Advances in Quantum Field Theory. Lecture II
    22/02/2016, 08:45
  5. 29. Gravity and the Quantum. Lecture II
    22/02/2016, 10:00
  6. 30. Models for the LHC and Beyond. Lecture I
    22/02/2016, 11:00
  7. 3. Sondenheimer -- Nonperturbative RG flow of the Higgs potential
    Mr René Sondenheimer (FSU Jena)
    22/02/2016, 16:45
    We reanalyze the conventional arguments that relate a lower bound for the Higgs mass with vacuum stability in the framework of the functional renormalization group as well as in the light of exact results for the regularized fermion determinant. In both cases, we find no indication for vacuum instability nor metastability induced by top fluctuations if the cutoff is kept finite but arbitrary...
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  8. 6. Loose
    Mr Dennis Loose (TU Dortmund)
    22/02/2016, 17:05
    Experimental findings in semileptonic B decays by LHCb, Belle and BaBar hint at a possible violation of lepton universality. We investigate an explanation of this anomaly within leptoquark scenarios and point out correlations which arise from flavor symmetries that are known to be capable of describing the observed mixing of quarks and leptons.
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  9. 5. Christiansen -- Local Quantum Gravity
    Dr Nicolai Christiansen (Institute for Theoretical Physics, Heidelberg University)
    22/02/2016, 17:25
    I investigate the ultraviolet behaviour of quantum gravity within a functional renormalization group approach. In particular, the scale- and momentum-dependence of the graviton propagator and the graviton three-point function are studied and the fixed point structure of the theory is analyzed. Moreover, a novel locality property as an essential feature of a well-defined renormalization group...
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  10. 41. Models for the LHC and Beyond. Lecture II
    22/02/2016, 18:00
  11. 9. Schnabl
    Dr Martin Schnabl (Institute of Physics AS CR)
    22/02/2016, 19:00
    I will review the subject of topological defects in 2d CFT and discuss the novel aspects which arise in presence of boundaries. I will mention applications to open string field theory.
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  12. 10. Kitamura -- Tree-level Unitarity and Renormalizability in Lifshitz Scalar Theory
    Mr Tomotaka Kitamura (Waseda University)
    22/02/2016, 19:20
    I studied the equivalence between tree unitarity and renormalizability in Lifshitz scalar theory. Tree-level unitarity and renormalizability are believed to be equivalent in field theories. No counter-example is known in relativistic field theories. However, the question whether the equivalence holds true for more generic field theories, such as non-relativistic theories is obscure. In my...
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  13. 11. Karateev -- Some Recent Developments in 4D CFTs
    Mr Denis Karateev (SISSA)
    22/02/2016, 19:40
    In this short talk I will briefly summarise non-perturbative non-lagrangian formulation of CFTs and the philosophy of conformal bootstrap. I will then focus on 4D CFTs and discuss 3- and 4- point functions of operators with arbitrary spin: their computation, importance and future applications for conformal bootstrap.
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  14. 27. Gravity and the Quantum. Lecture III
    23/02/2016, 08:45
  15. 32. Asymptotic Safety. Lecture II
    23/02/2016, 10:00
  16. 23. Models for the LHC and Beyond. Lecture III
    23/02/2016, 11:00
  17. 12. Gold -- Probing astrophysical black holes with gravitational waves and light
    Dr Roman Gold (University of Maryland)
    23/02/2016, 16:45
  18. 13. Huber -- A non-perturbative study of the correlation functions of three-dimensional Yang-Mills theory
    Dr Markus Huber (University of Graz)
    23/02/2016, 17:05
    Functional equations like the functional renormalization group, Dyson-Schwinger equations or n-PI methods are useful tools which provide insight into the non-perturbative regime of quantum field theories. The basic objects are Green functions which can be calculated non-perturbatively. However, while the underlying equations are exact, approximations have to be introduced for the actual...
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  19. 14. Mitter -- Yang-Mills correlation functions from the functional renormalization group
    Dr Mario Mitter (University of Heidelberg)
    23/02/2016, 17:25
    We investigate SU(3)-Yang-Mills theory in a systematic vertex expansion scheme for the effective action. Particular focus is put on the dynamical creation of the gluon mass gap at non-perturbative momenta and the consistent treatment of quadratic divergences. The gluon and ghost propagators as well as the momentum-dependent ghost-gluon, three-gluon and four-gluon vertices are calculated...
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  20. 15. Hiller -- BSM Flavor Physics with Charm, Beauty and Leptons
    Prof. Gudrun Hiller (TU Dortmund)
    23/02/2016, 18:00
    Flavor physics is highly sensitive to beyond the standard model (BSM) physics and vice versa. In this talk we demonstrate this explicitly in the example of bottom-up leptoquark extensions of the Standard Model. Recent anomalies in rare B-meson decays into leptons hinting at lepton non-unversality are addressed. The talk is based on recent works arxiv:1408.1627, 1503.01084 and 1510.00311, all hep-ph.
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  21. 16. Bond -- Renormalisation group flow of perturbative field theories
    Mr Andrew Bond (University of Sussex)
    23/02/2016, 18:20
    Renormalisation group flow of perturbative field theories
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  22. 17. Maas -- Physical spectra and new physics
    Prof. Axel Maas (University of Graz)
    23/02/2016, 18:40
    Experimentally observable particles require a gauge-invariant description. In non-Abelian gauge theories this implies that only composite operators, and thus bound states, can be physical. Though bound states are genuine non-perturbative objects, the Froehlich-Morcchio-Strocchi mechanism nonetheless provides a possibility to determine the masses of Higgs, W, and Z using perturbation...
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  23. 45. Poster Presenters
    23/02/2016, 19:15
    Natalia Alkofer -- Spectral Dimensions from the Spectral Action -- Reinhard Alkofer: The Rotating Mass Shell: A counter-example to Mach's principle? -- Adrian Lorenz Blum -- Symmetry-broken phase of $\phi^{4}$-theory from the FRG Julia Borchardt -- Global flow of the Higgs potential in a Yukawa model Tugba Buyukbese -- Anton Konrad Cyrol -- Yang-Mills correlation functions from...
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  24. 24. Models for the LHC and Beyond. Lecture IV
    24/02/2016, 08:45
  25. 33. Fundamental Theory Beyond the SM. Lecture I
    24/02/2016, 10:00
  26. 34. Gravity and the Quantum. Lecture IV
    24/02/2016, 11:00
  27. 35. Particle Physics and Cosmology. Lecture I
    24/02/2016, 18:00
  28. 4. Mati -- Critical scaling in the large-N O(N) model in higher dimensions and its possible connection to quantum gravity
    Dr Peter Mati (ELI-ALPS)
    24/02/2016, 19:00
    The critical scaling of the large-N O(N) model in higher dimensions using the exact renormalization group equations has been studied, motivated by the recently found non-trivial fixed point in 4<d<6 dimensions with metastable critical potential. Particular attention is paid to the case of d=5 where the scaling exponent of the correlation length has the value 1/3, which coincides with the...
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  29. 18. Fumagalli -- Predictiveness of inflation with the Higgs boson
    Mr Jacopo Fumagalli (NIKHEF)
    24/02/2016, 19:20
    The predictions of (Standard model) Higgs inflation are in excellent agreement with the Planck data, without needing new particles beyond the ones we know. Nevertheless, introducing some threshold corrections is demanded by the consistency of the theory. This raises the question: how sensitive the CMB predictions are to the UV completion? I will show that as long as the UV corrections do not...
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  30. 20. Ramírez Rodríguez -- Do current data prefer a nonminimally coupled inflaton?
    Mr Héctor Ramírez Rodríguez (IFIC - University of Valencia)
    24/02/2016, 19:40
    Inflation provides the most theoretically attractive and observationally successful cosmological scenario able to generate the initial conditions of our universe. From the theoretical viewpoint, this picture is usually understood as the dynamics of a single new scalar degree of freedom, the inflaton, minimally coupled to gravity. However, generally the inflaton is expected to have a nonminimal...
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  31. 36. Asymptotic Safety. Lecture III
    25/02/2016, 08:45
  32. 37. Models for the LHC and Beyond. Lecture V
    25/02/2016, 10:00
  33. 38. Advances in Quantum Field Theory. Lecture III
    25/02/2016, 11:00
  34. 39. Particle Physics and Cosmology. Lecture II
    25/02/2016, 16:45
  35. 40. Fundamental Theory Beyond the SM. Lecture II
    25/02/2016, 18:00
  36. 47. Raum , Zeit, Universum - die Rätsel des „Beginns“
    25/02/2016, 20:00
  37. 31. Asymptotic Safety. Lecture IV
    26/02/2016, 08:45
  38. 42. Advances in Quantum Field Theory. Lecture IV
    26/02/2016, 10:00
  39. 43. Fundamental Theory Beyond the SM. Lecture III
    26/02/2016, 11:00
  40. 44. Particle Physics and Cosmology. Lecture III
    26/02/2016, 16:45
  41. 46. Fixed points in quantum gravity and cosmology
    26/02/2016, 18:00
  42. 7. Barabanov -- Perspective Study of Exotics and Baryons with Charm and Strangeness
    Dr Mikhail Barabanov
    The spectroscopy of exotics states with hidden charm together with the spectroscopy of charmed and strange baryons is discussed. It is a good testing tool for the theories of strong interactions, including: QCD in both the perturbative and non-perturbative regimes, LQCD, potential models and phenomenological models [1, 2, 3]. An understanding of the baryon spectrum is one of the primary goals...
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  43. 19. Cherkas -- Quantum mechanics allows setting initial conditions at a cosmological singularity: Gowdy model example.
    Dr Sergey Cherkas (Institute for Nuclear Problems, Belarusian State University)
    It is shown, that initial conditions in the quasi-Heisenberg quantization scheme can be set at an initial cosmological singularity per se. This possibility is provided by finiteness of some quantities, namely momentums of the dynamical variables, at a singularity, in spite of infinity of the dynamical variables themselves. The uncertainty principle allows avoiding a necessity to set values of...
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  44. 26. Fundamental Theory Beyond the SM. Lecture II
  45. 8. Ihl
    Dr Matthias Ihl (Centro de Física do Porto, FCUP, Universidade do Porto)
    Holographic Anyons and the virial expansion. Some recent progress on strongly coupled anyons will be discussed.
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