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Elias Kiritsis27/06/2016, 10:00
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Roman Zwicky27/06/2016, 11:30We consider N=1 supersymmetric gauge theories in the conformal window. The running of the gauge coupling is absorbed into the metric by applying a suitable matter superfield- and Weyl-transformation. The computation becomes equivalent to one of a free theory in a curved background carrying the information of the renormalisation group flow. We use the techniques of conformal anomaly...Go to contribution page
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Richard Brower27/06/2016, 13:30
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Maurizio Piai27/06/2016, 14:30
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Francesco Sannino27/06/2016, 16:00I will present new exact results in four-dimensional quantum field theory that led to the discovery to asymptotically safe theories in four dimensions without supersymmetry. I will also discuss supersymmetric extensions and present new exact results that make use of a number of non-perturbative tools ranging from the unitary of the conformal operators to the a-theorem and maximisation. The...Go to contribution page
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Luca Vecchi28/06/2016, 09:00
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Gabriele Ferretti28/06/2016, 10:00We present a class of gauge theories in which the Higgs boson arises as a pseudo-Nambu-Goldstone boson and top-partners arise as bound states of three hyperfermions. All models have additional pNGBs in their spectrum that should be accessible at LHC, including one that can explain the current diphoton excess at 750~GeV. We discuss how the Lattice can help answering some of the questions about...Go to contribution page
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Christoph Englert28/06/2016, 11:30I will discuss the implications of recent LHC measurements for Higgs physics using effective field theory methods. On the basis of these results I will discuss the status of concrete UV scenarios, in particular composite Higgs models.Go to contribution page
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Claudio Pica28/06/2016, 13:30We investigate the spectrum of the SU(2) gauge theory with Nf = 2 flavors of fermions in the fundamental representation, in the continuum, using Lattice simulations [1,2,3]. This model provides a minimal template which has been used for different strongly coupled extensions of the Standard Model ranging from composite (Goldstone) Higgs models [4] to intriguing types of dark matter...Go to contribution page
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Anna Hasenfratz28/06/2016, 14:30We construct a prototype BSM model where the Higgs boson is a pseudo Nambu-Goldstone boson by combining 4 light (massless) flavors and 8 heavy flavors. In the infrared, the SU(4) chiral symmetry is spontaneously broken , while in the ultraviolet it exhibits the properties of the $N_f=12$ conformal fixed point. The running coupling of this system ``walks" and the energy range of walking can...Go to contribution page
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Kari Rummukainen28/06/2016, 16:00SU(2) gauge theory is asymptotically free with Nf <= 10 fundamental representation fermions. Above approximately 6 fermion flavours the theory is expected to have an infrared fixed point. We study the evolution of the coupling using the gradient flow step scaling mehtod, and investigate the behaviour of the hadron spectrum as we cross from the confining into the conformal region.Go to contribution page
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Mätti Jarvinen29/06/2016, 09:00I discuss holographic QCD in the Veneziano limit (large N_c and N_f with x=N_f/N_c fixed) where quarks are fully backreacted to gluons. When all quark flavors are identical, QCD in this limit has two parameters in addition to Lambda_QCD, namely the quark mass and the theta angle. I demostrate how these parameters can be included in holographic QCD, and discuss the resulting phase diagram. At...Go to contribution page
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Jun Nishimura29/06/2016, 10:00We test the gauge/gravity duality conjecture directly by using Monte Carlo methods to study the strongly coupled regime of the relevant gauge theory. In particular, we focus on the D0-brane system, which is described by a one-dimensional gauge theory with 16 supercharges. Extending our previous work, which confirmed the duality in the large-N limit, we investigate whether the duality...Go to contribution page
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Umut Gürsoy29/06/2016, 11:30
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Tony Gonzalez-Arroyo29/06/2016, 13:30We review progress made recently in obtaining results on large N gauge theories using the lattice formulation together with the concept of volume independenceGo to contribution page
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Marga Garcia-Perez29/06/2016, 14:30In the limit of infinite numbers of coulours in Yang-Mills theory, the interplay between volume and group degrees of freedom has led to the concept of volume independence through Eguchi-Kawai reduction. We will discuss an attempt to extend this idea beyond the large N limit. A few non-perturbative examples will be presented, including the running of the SU(N) ’t Hooft coupling and the 2+1...Go to contribution page
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Gunnar Bali29/06/2016, 16:00
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Julius Kuti30/06/2016, 09:00Based on recent analysis of the LatHC collaboration I will review critical features of a minimal composite Higgs model close to the conformal window. Challenging problems of the near-conformal paradigm will be compared with PNGB based partial compositeness.Go to contribution page
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Tom Appelquist30/06/2016, 10:00I will describe a very simple model accommodating the reported 750 GeV diphoton excess seen in the first 13-TeV run of the LHC. It leads to testable predictions, in particular for di-lepton production, at higher integrated luminosity. A new gauge sector with its own SU(2) symmetry group is appended to the minimal standard model. A new complex doublet scalar field provides mass for the heavy...Go to contribution page
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David Marzocca30/06/2016, 11:30Among all LHC results, the most exciting signs of deviations from the SM are, on the one hand, a series of hints of violation of lepton-flavor universality in various B-meson decays and, on the other hand, the excess in diphoton invariant mass distribution at 750GeV. In this talk I discuss a class of new physics models with composite dynamics aimed at addressing both sets of anomalies in a...Go to contribution page
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Alberto Ramos30/06/2016, 13:30
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Marco Panero30/06/2016, 14:30We discuss an efficient method to compute expectation values of generic observables in lattice Monte Carlo calculations, by evaluating the work performed during a non-equilibrium transformation between configurations in different equilibrium ensembles. This technique, which relies on a theorem proven by Christopher Jarzynski in 1997, has potential applications for a broad spectrum of...Go to contribution page
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Christos Leonidopoulos (ATLAS)30/06/2016, 16:00
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