Relativistic Fermions in Flatland: theory and application

Europe/Rome
Virtual (ECT* - Trento)

Virtual

ECT* - Trento

Zoom Platform
Simon Hands - Swansea University (Swansea University), Holger Gies - Friedrich Schiller University Jena (Friedrich Schiller University Jena), John Gracey - University of Liverpool (University of Liverpool), Igor Herbut - Simon Fraser University (Simon Fraser University)
Description

Relativistic Fermions in Flatland: theory and application

Planar fermions occur frequently in layered systems and are extensively studied in condensed matter physics; for instance, electronic properties of graphene have long been understood in terms of relativistic fermions centered on Dirac points in momentum space, but the influence of interactions between charge-carrying degrees of freedom is less wellunderstood and remains an active field of study. Other examples are furnished by cuprate superconductors and materials with symmetry-protected topological phases. Quantum fermions in 2+1d also present many theoretical challenges, and there is a parallel renaissance of interest involving among others workers in large loop-order perturbation theory, functional renormalisation group, conformal bootstrap, and lattice simulation, tools mainly developed for particle theory, for whose practitioners such systems encapsulate essential challenges for their respective agendas.

A week-long workshop is a perfect opportunity to assemble attendees spanning this diverse community, stimulate knowledge exchange, and spawn fresh research directions.

                 

                                                 

                                    

Contact: Susan Driessen
    • 13:59 14:00
      Session Chair: Simon Hands 1m
    • 14:00 14:15
      Welcome | Hubbard/Gross-Neveu Models + intro by ECT* Director 15m
    • 14:15 15:00
      Universal critical behavior in Hubbard models with Dirac dispersion 45m
      Speaker: Sandro Sorella
    • 15:00 15:45
      Recent advancements in the functional renormalization group description of the 2D Hubbard model 45m
      Speaker: Sabine Andergassen
    • 15:45 16:59
      Break/Gather Town 1h 14m
    • 16:59 17:00
      Session Chair: Simon Hands 1m
    • 17:00 17:45
      Non-perturbative Renormalization Group for DIrac Fermions; interactions and quasi-periodic discrder 45m
      Speaker: Vieri Mastropietro
    • 17:45 18:30
      The Majorana-Hubbard Model 45m
      Speaker: Ian Affleck
    • 18:30 19:00
      Close 30m
    • 13:59 14:00
      QED3, large N and critical behaviour - Session Chair John Gracey 1m
    • 14:00 14:45
      Anomalous Dimensions from Massive Vacuum Diagrams 45m
      Speaker: Peter Marquard
    • 14:45 15:30
      Rigorous fixed points of 3d and 4d flatland QFTs 45m
      Speaker: Daniel Litim
    • 15:30 16:59
      Break/Gather Town 1h 29m
    • 16:59 17:00
      Session Chair John Gracey 1m
    • 17:00 17:45
      Fermions in the Conformal Bootstrap 45m
      Speaker: David Poland
    • 17:45 18:30
      QED3 in condensed matter: from quantum criticality to instanton zero modes 45m
      Speaker: Joseph Maciejko
    • 18:30 19:00
      Close 30m
    • 13:59 14:00
      Condensed matter applications - Session Chair Holger Gies 1m
    • 14:00 14:45
      Numerical simulations of Dirac systems 45m
      Speaker: Fakher Assaad
    • 14:45 15:30
      Quantum criticality between spin liquids and long-range order 45m
      Speaker: Lukas Janssen
    • 15:30 16:59
      Poster session Gather Town 1h 29m
    • 16:59 17:00
      Session Chair Holger Gies 1m
    • 17:00 17:20
      Gross-Neveu-SO(3) quantum criticality from field theory beyond leading order 20m
      Speaker: Shouryya Ray
    • 17:20 17:40
      Simulating bot parity sectors of the Hybbard model with tensor networks 20m
      Speaker: Johann Ostmeyer
    • 17:40 18:00
      Non-perturbative study of the Fermi velocity renormalization in graphene using large-scale QMC calculation 20m
      Speaker: Maksim Ulybyshev
    • 18:00 18:45
      Emergent SO(5) symmetry in the global phase diagram of extended Hubbard model in monolayer graphene 45m
      Speaker: Bitan Roy
    • 18:45 19:15
      Close 30m
    • 13:59 14:00
      Numerical simulations - Session Chair Simon Hands 1m
    • 14:00 14:45
      Exotic quantum criticality: emergent supersymmetry and emergent SO(5) symmetry 45m
      Speaker: Hong Yao
    • 14:45 15:30
      Phases and critical flavor number of 3d Thirring model 45m
      Speaker: Andreas Wipf
    • 15:30 16:59
      Break/Gather Town 1h 29m
    • 16:59 17:00
      Session Chair: Holger Gies 1m
    • 17:00 17:45
      Is the semimetal-insulator transition in graphene a conformal transition? 45m
      Speaker: Pavel Buividovich
    • 17:45 18:30
      Lattice in flatland: Investigations of IR conformality and topological defects 45m
      Speaker: Nikhil Karthik
    • 18:30 19:00
      Close 30m
    • 13:59 14:00
      SUSY and beyond - Session Chair John Gracey 1m
    • 14:00 14:45
      Emergent supersymmetry at the critical point of Yukawa systems 45m
      Speaker: Omar Zanusso
    • 14:45 15:30
      Lattice studies of supersymmetric Yang--Mills in 2+1 dimensions 45m
      Speaker: David Schaich
    • 15:30 16:59
      Break/Gather Town 1h 29m
    • 16:59 17:00
      Session Chair Simon Hands 1m
    • 17:00 17:45
      Interacting massless Dirac fermions with spin-charge flip symmetry 45m
      Speaker: Shailesh Chandrasekharan
    • 17:45 18:30
      Symmetric Mass Generation in Lattice Gauge Theory 45m
      Speaker: Simon Catterall
    • 18:30 19:00
      Close 30m