SIFT 2019: Strongly-Interacting Field Theories

7 Nov 2019, 08:30 → 9 Nov 2019, 13:00 Europe/Berlin

This workshop is funded by the newly established research training group RTG 2522 and aims to bring together researchers from different areas of theoretical physics who study manifestations and phenomena of strongly-interacting field theories, in order to allow for a transfer of knowledge and methods. This year's workshop plans to put a special emphasis on symmetry breaking and phase transitions, quantum field theory in and out of equilibrium, inhomogeneous condensates and fermionic systems.

The workshop intends to be a platform to stimulate a cross-fertilization between discrete and continuum approaches to strongly-interacting field theories - spanning the range from lattice gauge theory, functional renormalization group methods to gauge/gravity dualities.

Thursday 7 November

08:30 → 08:55 Registration

08:55 → 09:00 Opening

09:00 → 09:50 Generalized 't Hooft anomalies

Speaker: Mohammed Anber (Lewis & Clark College, Portland)

Vortrag_Anber.pdf

09:55 → 10:45 Quantum distillations, semi-classics and mixed anomalies

Speaker: Mithat Ünsal (NC State U)

JENA-2019.pdf

10:45 → 11:15 Break

11:15 → 12:05 Computational Spectroscopy of Quantum Critical Points

Speaker: Andreas Laeuchli (Innsbruck U)

Jena_SIFT2019_Spectroscopy.pdf

12:10 → 13:00 Dynamics on the edge: charge fractionalization and anyonic exclusion

Equilibration of isolated quantum systems has attracted much attention recently. Due to their integrability, one-dimensional systems often equilibrate towards a non-thermal steady state. In coupled quantum Hall edge states, the approach towards such a non-equilibrium steady state can be understood in terms of charge fractionalization, i.e. the decomposition of injected charges into eigenmodes propagating at different velocities. The method of non-equilibrium bosonization allows to describe such equilibration, distinguishing the regimes of quasi-particle creation and local equilibration. Generalizing to anyons on fractional quantum Hall edges, steady state current fluctuations can be related to the probability of anyons excluding each other spatially.

Speaker: Bernd Rosenow (Leipzig U)

Vortrag_Rosenow.pdf

13:00 → 15:00 Lunch

15:00 → 15:50 Dualities in field theories for condensed matter

Speaker: Lukas Janssen (TU Dresden)

janssen-SIFT2019.pdf

15:50 → 16:20 Break

16:20 → 17:10 Finite density simulations for strongly interacting field theories

Speaker: Andrei Alexandru (George Washington University)

alexandru-sift2019.pdf

17:15 → 17:45 Exploring the phases of Yang-Mills theory with adjoint matter through the gradient flow

Speaker: Camilo Lopez (FSU Jena)

sift19-slides.pdf

18:00 → 18:10 A Curvature Bound From Gravitational Catalysis (Poster)

Speaker: Riccardo Martini (Okinawa Institute if Science and Technology)

posterSIFT19Martini.pdf

18:00 → 18:10 Asymptotically safe QED (Poster)

Speaker: Jobst Ziebell (FSU Jena)

Ziebell-Poster.pdf

18:00 → 18:10 From spin chains to real-time thermal field theory using tensor networks (Poster)

Speaker: Johannes Knaute

Poster_Knaute.pdf

18:00 → 19:30 Poster Session

18:10 → 18:20 Competition of inhomogeneous chiral phases with homogeneous 2SC phases in low-energy models of QCD (Poster)

Speaker: Phillip Lakaschus (U Frankfurt)

Poster_Lakaschus.pdf

18:10 → 18:20 The necessity of indefinite metric Hilbert spaces in covariant gauges of QED (Poster)

Speaker: Jan Mandrysch (Leipzig U)

Poster_Mandrysch.pdf

18:10 → 18:20 X-ray photon scattering at a focused high-intensity laser pulse (Poster)

Speaker: Elena Mosman (Tomsk PU)

Poster_Mosman.pdf

18:20 → 18:30 N=1 Supersymmetric SU(3) Gauge Theory With A Twist

Speaker: Marc Steinhauser (FSU Jena)

Poster_Steinhauser.pdf

18:20 → 18:30 TBA

Speaker: Martin Steil (TU Darmstadt)

steil_poster_jena.pdf

18:20 → 18:30 Ward identities and baryonic states in N =1 SUSY Yang-Mills theory on the lattice (Poster)

Speaker: Sajid Ali (U Münster)

WIs_Baryon_Ali.pdf

18:30 → 18:40 Density of States Techniques for Finite Density Lattice QCD (Poster)

Speaker: Michael Mandl (Graz U)

Poster_Mandl.pdf

18:30 → 18:40 Spontaneous symmetry breaking in 4-Fermi theories of gapless fermions with quadratic dispersion in (2+1)D (Poster)

Speaker: Shouryya Ray (TU Dresden)

Poster_Ray.pdf

Friday 8 November

09:00 → 09:50 Tensor Networks as numerical tools for QFT

Speaker: Mari-Carmen Bañuls (MPQ München)

TNandQFT_Nov19.pdf

09:55 → 10:45 Tensor renormalization group in bosonic field theories

Speaker: Esperanza Lopez

SIFT-Lopez.pdf

10:45 → 11:15 Break

11:15 → 12:05 Crystalline chiral condensates in dense quark matter

In the past few years a growing consensus has been building around the idea that a spatially inhomogeneous chiral condensate may form in dense quark matter. In this talk, I will give a brief historical overview and review some recent developments on the characterization of such crystalline condensates using effective models for describing of QCD at finite density.

Speaker: Stefano Carignano (Barcelona U)

Jena_stefano.pdf

12:10 → 13:00 Topological crystalline phase in nuclear matter under strong magnetic fields

Speaker: Tomas Brauner

talk_Brauner.pdf

13:00 → 15:00 Lunch

15:00 → 15:50 Dense nuclear and quark matter from holography

Speaker: Andreas Schmitt (Southampton U)

schmitt.pdf

15:50 → 16:20 Break

16:20 → 16:50 Hydrodynamics, Spontaneously Broken Symmetries, and Holography

Speaker: Sean Gray (FSU Jena)

SeanGray_SIFT.pdf

16:55 → 17:25 Inhomogeneous Phases in Gross-Neveu Models

Speaker: Julian Lenz (FSU Jena)

main.pdf

19:00 → 21:00 Workshop Dinner

Saturday 9 November

09:00 → 09:50 The melonic large N limit: from SYK to tensor field theory

I will summarize the structure and scope of the so-called melonic large N expansion, which typically governs the large N behaviour of theories involving higher rank tensors. Compared to vector and matrix theories, What distinguishes it from the large N expansions of vector or matrix theories is that it is dominated by a non-trivial family of Feynman diagrams -- the melon diagrams -- which remains explicitly summable in a variety of situations. This provides a new analytical window into non-perturbative aspects of quantum theory, which has been taken advantage of to investigate strongly-interacting fermionic disordered systems (SYK model) and higher-dimensional generalizations.

Speaker: Sylvain Carrozza (Perimeter Institute, Waterloo)

SIFT_Jena_2019_Carrozza.pdf

09:55 → 10:45 Dualities and inhomogeneous phases in dense quark matter with chiral and isospin imbalances in the framework of effective model

Speaker: Tamaz Khunjua (Lomonosov Moscow State U)

Khunjua.pdf

10:45 → 11:15 Break

11:15 → 12:05 Lattice investigation of an inhomogeneous phase of the 2+1-dimensional Gross-Neveu model in the limit of infinitely many flavors

Speaker: Marc Wagner (Frankfurt U)

Jena_SIFT.pdf

12:10 → 13:00 Thermodynamics of Polarized Fermions

Speaker: Jens Braun (TU Darmstadt)