18-24 June 2017
Palacio de Congresos
Europe/Madrid timezone
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Physics Beyond the Standard Model

Place

Location: Palacio de Congresos
Address: PALACIO DE CONGRESOS Paseo del Violón s/n, 18006 Granada, SPAIN
Date: from 19 Jun 14:30 to 23 Jun 16:40

Conveners

  • 19 Jun 14:30 - 16:10
    • Dr. Rinaldi, Enrico (RIKEN BNL RESEARCH CENTER)
  • 19 Jun 16:40 - 18:00
    • Prof. Lin, C.-J. David (National Chiao-Tung University)
  • 20 Jun 15:00 - 16:40
    • Dr. Janowski, Tadeusz (CP3-Origins, University of Southern Denmark)
  • 20 Jun 17:10 - 19:10
    • Nogradi, Daniel (Eotvos University Budapest)
  • 22 Jun 15:00 - 16:40
    • Prof. Giedt, Joel (Rensselaer Polytechnic Institute)
  • 22 Jun 17:10 - 19:10
    • Dr. Joseph, Anosh (ICTS-TIFR)
  • 23 Jun 15:00 - 16:40
    • Prof. Pica, Claudio (University of Southern Denmark)

Timetable | Contribution List

Displaying 35 contributions out of 35
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
We present a new method to calculate the continuum beta function in gauge theories, using the gradient flow and p-regime simulations. The infinite volume renormalization scheme has the flow time as its only scale and determines the beta function in the strong coupling regime relevant for the spectrum with spontaneously broken chiral symmetry. This bridges the gap between other methods using simula ... More
Presented by Prof. Kieran HOLLAND on 20/6/2017 at 16:00
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
We study the quantum corrections to the real-time evolution of the BFSS matrix model, which is holographically dual to a system of interacting D0 branes. Classical chaos in this system has been interpreted as a scrambling of information due to formation of a black hole. We demonstrate that fermions in this model, simulated within the classical-statistical (CSFT) approximation, lead to an instabili ... More
Presented by Dr. Pavel BUIVIDOVICH on 22/6/2017 at 18:50
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
We study the phase structure of SU(4) gauge theory with dynamical quarks in both the fundamental and two-index antisymmetric representations. Such "multi-representation" theories have been speculated to exhibit separated phase transitions, but we determine from lattice results that the chiral transitions occur simultaneously with each other and with the confinement transition. We investigate th ... More
Presented by Daniel HACKETT on 19/6/2017 at 15:50
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
We study the phase structure of an SU(4) gauge theory with dynamical fermions in both the fundamental and the two-index antisymmetric representations. Our lattice calculations show the existence of a first-order confinement transition. Although the presence of two different representations opens up the possibility of two separate confinement transitions, our results are consistent with a single ph ... More
Presented by Mr. Venkitesh AYYAR on 19/6/2017 at 15:30
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
First results are presented of a fully dynamical simulation of QCD+Axion for three quark flavors
Presented by Prof. Gerrit SCHIERHOLZ on 23/6/2017 at 15:00
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
Studying SU(3) gauge theories with increasing number of fermions is relevant both for understanding the strong dynamics of QCD and for constructing strongly interacting extensions of the Standard Model (e.g. UV completions of composite Higgs models). In order to contrast these many-flavors strongly-interacting theories with QCD, we study the flavor-singlet spectrum as an interesting probe. In fa ... More
Presented by Dr. Enrico RINALDI on 20/6/2017 at 15:00
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
In recent years, many numerical investigations of confining Yang Mills gauge theories near the edge of the conformal window have been carried out using lattice techniques. These studies have revealed that the spectrum of hadrons in nearly conformal ("walking") gauge theories differs significantly from the QCD spectrum. In particular, a light singlet scalar appears in the spectrum which is nearly ... More
Presented by Mr. Andrew GASBARRO on 20/6/2017 at 15:40
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
As a first step in the study of $Sp(2N)$ composite Higgs models, we obtained a set of novel numerical results for the pure gauge $Sp(4)$ lattice theory in $3+1$ space-time dimensions. Results for the continuum extrapolations of the string tension and the glueball mass spectrum are presented and their values are compared with the same quantities in neighbouring $SU(N)$ models.
Presented by Dr. Davide VADACCHINO on 19/6/2017 at 17:00
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
Higgs compositeness, i.e. the framework in which the Higgs boson arises as a Goldstone boson of a novel strong interaction, provides an elegant way to circumvent the hierarchy problem in the standard model. In order to study compositeness, the first step is to understand the global symmetry breaking pattern in the novel strong force, which has to be compatible with the symmetries of the standard m ... More
Presented by Prof. Biagio LUCINI on 19/6/2017 at 16:40
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
As part of an ongoing program to study $Sp(2N)$ gauge theories as potential realisations of composite Higgs models, we consider the case of $Sp(4)$ on the lattice, both as a pure gauge theory, and with two Dirac fermion flavors in the fundamental representation. In order to compare results between these two cases and maintain control of lattice artefacts, we make use of the gradient flow to set th ... More
Presented by Dr. Ed BENNETT on 19/6/2017 at 17:20
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
We consider Sp(4) gauge theories with two Dirac fermion flavors in the fundamental representation on a lattice, which provide a concrete example of the microscopic realization of the SO(6)/SO(5) composite Higgs model. For numerical studies we use the standard Wilson lattice action and the Hybrid Monte-Carlo algorithms. By performing a mass scan we first identify the first order bulk transition and ... More
Presented by Dr. Jong-Wan LEE on 19/6/2017 at 17:40
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
We present results from two projects on lattice calculations for the Higgs-Yukawa model. First we report progress on the search of first-order thermal phase transitions in the presence of a dimension-six operator, with the choices of bare couplings that lead to viable phenomenological predictions. In this project the simulations are performed using overlap fermions. Secondly, our study for appl ... More
Presented by Prof. C.-J. David LIN on 23/6/2017 at 15:20
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
This talk summarizes the results of the DESY-Münster collaboration for N=1 supersymmetric Yang-Mills theory with the gauge group SU(3). It is an updated status report with respect to our preliminary data presented at the last conference. In order to control the lattice artefacts we have now considered a clover improved fermion action and different values of the gauge coupling.
Presented by Dr. Georg BERGNER on 22/6/2017 at 15:00
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
Mass-split systems based on a conformal infrared fixed point provide a low-energy effective description of BSM systems with large scale separation. We report results of exploratory investigations with four light and eight heavy flavors using staggered fermions, and up to five different values for the light flavor mass, five different heavy flavor masses, and two values of the bare gauge coupling ... More
Presented by Prof. Claudio REBBI on 20/6/2017 at 18:50
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
We present results from a study of Euclidean dynamical triangulations in an attempt to make contact with Weinberg's asymptotic safety scenario for quantum gravity. We find that a fine-tuning is necessary in order to recover semiclassical behavior, and that once this tuning is performed, our simulations provide evidence in support of the asymptotic safety scenario for gravity. We discuss our motiv ... More
Presented by John LAIHO on 23/6/2017 at 16:00
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
The detection of gravitational waves (GWs) has raised interest in cosmology and particle physics as they can reveal unique information about the early universe, and new experiments to detect them, like LISA and DECIGO, will take place in the future. In the meantime numerical simulations are needed to compute the spectrum and strength of the gravitational wave signal from various scenarios. In this ... More
Presented by Sara TÄHTINEN on 22/6/2017 at 18:30
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
The $N=2^\star$ Yang-Mills theory in four dimensions is a non-conformal theory that appears as a mass deformation of maximally supersymmetric N=4 Yang-Mills theory. This theory also takes part in AdS/CFT correspondence and its gravity dual is type IIB supergravity on the Pilch-Warner background. The finite temperature properties of this theory have been studied. It has been argued that at large N ... More
Presented by Dr. Anosh JOSEPH on 22/6/2017 at 16:00
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
We present details of ongoing calculations of the low energy properties (spectrum, decay constants, elastic scattering) of SU(3) $N_f = 8$ gauge theory, as performed by the Lattice Strong Dynamics (LSD) collaboration. We will discuss systematic effects such as staggered fermion flavor breaking and finite volume corrections. We will also discuss the challenges of approaching the chiral limit in a ... More
Presented by Dr. George FLEMING on 20/6/2017 at 15:20
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
We present preliminary results on the lattice simulation of an SU(2) gauge theory with two fermion flavors and one strongly interacting scalar field, all in the fundamental representation of SU(2). The motivation for this study comes from the recent proposal of "fundamental" partial compositeness models featuring strongly interacting scalar fields in addition to fermions. Here we describe the lat ... More
Presented by Ms. Arianna TONIATO on 20/6/2017 at 18:10
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
We present our final results for the SU(3) sextet model with the non-improved Wilson fermion discretization. We find evidence for several phases of the lattice model, including a bulk phase with broken chiral symmetry. We study the transition between the bulk and weak coupling phase which corresponds to a significant change in the qualitative behavior of spectral and scale setting observables. ... More
Presented by Prof. Claudio PICA on 20/6/2017 at 17:50
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
Lowest lying gluonia of a pure gauge SU(N) theory with $N = N_d$ being the number of dark colors provides a viable, very attractive and simple idea for the dark matter. Indeed it gives a natural explanation for the only compelling evidence for dark matter we have, namely via gravitational lensing and simultaneously readily accounts for the difficulty we are experiencing in finding direct evidenc ... More
Presented by Amarjit SONI on 23/6/2017 at 13:40
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
We present results of lattice simulation of SU(4) gauge theory coupled to dynamical fermions in the fundamental and two-index antisymmetric representations. Such theories arise naturally in the context of models for physics beyond the Standard Model, particularly within the frameworks of composite Higgs and partial compositeness. We describe the measured spectrum of the theory and discuss some imp ... More
Presented by Mr. William JAY on 19/6/2017 at 15:10
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
Supersymmetric gauge theories are an important building block for extensions of the standard model. As a first step towards Super-QCD we investigate the pure gauge sector, in particular the bound states: meson-like gluinoballs, gluino-glueballs and pure glueballs. The talk will report on some first calculations performed with clover improved Wilson fermions on rather small lattices. The supersymme ... More
Presented by Mr. Marc STEINHAUSER on 22/6/2017 at 17:50
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
SU(3) gauge theory with 2 flavors of fermions in the two-index symmetric representation (sextet model) continues to be an interesting candidate as a composite Higgs BSM model. We report on the latest analysis and challenges of the corresponding spectroscopy.
Presented by Mr. chik him WONG on 20/6/2017 at 17:10
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
Grand unified theories (GUTs) are an attempt to unifiy the gauge interactions of the standard model. We show that conventional perturbation theory is insufficient to correctly predict the particle spectrum in many GUTs, and how a correct result is obtained from strict gauge invariance and the Fröhlich-Morchio-Strocchi mechanism. We use lattice simulations for a toy GUT to demonstrate the above ... More
Presented by Mr. Pascal TOEREK on 22/6/2017 at 18:10
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
We study N = 1 supersymmetric Yang-Mills theory (SYM) on the lattice. Like QCD, SYM is confining and contains strongly bound states. Glueballs, gluino-glues, mesons and their corresponding excited states should form chiral supermultiplets if SUSY is not broken at the quantum level. We compute masses for the bound states of the two lightest supermultiplets by applying a variational method comb ... More
Presented by Mr. Henning GERBER on 22/6/2017 at 15:40
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
In this contribution we lay down a lattice setup that allows for the non-perturbative study of a field theoretical model where a SU(2) fermion doublet, subjected to non-Abelian gauge interactions, is also coupled to a complex scalar field doublet via a Yukawa and an “irrelevant” Wilson-like term. Using naive fermions in quenched approximation and based on the renormalized Ward identities induc ... More
Presented by Mr. Marco GAROFALO on 19/6/2017 at 14:30
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
Based on a recent proposal according to which elementary particle masses could be generated by a non-perturbative dynamical phenomenon, alternative to the Higgs mechanism, we carry out lattice simulations of a model where a non-abelian strongly interacting fermion doublet is also coupled to a doublet of complex scalar fields via a Yukawa and an “irrelevant” Wilson-like term. In this pioneering ... More
Presented by Petros DIMOPOULOS on 19/6/2017 at 14:50
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
Dilaton signatures are investigated in the effective theory of the light sigma particle coupled to chiral dynamics of light Goldstone bosons. The analysis of the sextet model is based on recent results from the Lattice Higgs Collaboration.
Presented by Prof. Julius KUTI on 20/6/2017 at 17:30
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
The lattice studies of maximally supersymmetric Yang-Mills (MSYM) theory at strong coupling and large-N is important for verifying the gauge/gravity duality. Due to the progress made in the last decade, based on ideas from topological twisting and orbifolding, it is now possible to study these theories on the lattice while preserving an exact supersymmetry on the lattice. I will present results fr ... More
Presented by Mr. Raghav Govind JHA on 22/6/2017 at 16:20
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
Supersymmetry is one of the possible scenarios for physics beyond the standard model. The building blocks of this scenario are supersymmetric gauge theories, which exhibit interesting non-perturbative effects. In our work, we study the dimensional reduced N=1 Super Yang Mills theory, namely two dimensional N=2 Super Yang Mills theory. In our lattice formulation we break supersymmetry and ch ... More
Presented by Mr. Daniel AUGUST on 22/6/2017 at 17:30
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
We report on a non-perturbative study of D=2 N=(2,2) super QCD. Our lattice formulation retains an exact supersymmetry at non-zero lattice spacing. In addition to the gauge bosons and fermions found in a U(N_c) super Yang-Mills theory this model also contains N_f fermions and scalars transforming in the fundamental representation of the gauge group. We present evidence that the exact supersymmetr ... More
Presented by simon CATTERALL on 22/6/2017 at 17:10
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
We present a non perturbative study of SU(2) gauge theory with two fundamental Dirac flavours. This theory provides a minimal template which is ideal for a wide class of Standard Model extensions featuring novel strong dynamics, such as a minimal realization of composite Higgs models. We present an update on the status of the meson spectrum and decay constants based on increased statistics on our ... More
Presented by Dr. Tadeusz JANOWSKI on 20/6/2017 at 18:30
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
The introduction of a space-time lattice as a regulator of field theories breaks symmetries associated with continuous space-time, i.e. Poincare ́ invariance and supersymmetry. A non-zero gluino mass in the supersymmetric Yang-Mills theory causes an additional soft breaking of supersymmetry. We employ the lattice form of SUSY Ward identities, imposing that their continuum form would be recovere ... More
Presented by Mr. Sajid ALI on 22/6/2017 at 15:20
Type: Parallel Session: Physics Beyond the Standard Model
Track: Physics Beyond the Standard Model
Results are reported for the running coupling of weakly coupled conformal gauge theories on the lattice. The models are chosen to be close to the upper end of the conformal window where perturbation theory is reliable hence a fixed point is expected. The study serves as a test of how well lattice methods perform in the weakly coupled conformal cases.
Presented by Daniel NOGRADI on 20/6/2017 at 16:20
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