Relativistic Fermions in Flatland: theory and application

5 Jul 2021, 13:59 → 9 Jul 2021, 19:00 Europe/Rome

Virtual (ECT* - Trento)

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)

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.

                 

                                                 

                                    

Registration in Eventbrite

Monday 5 July

13:59 → 14:00 Session Chair: Simon Hands

14:00 → 14:15 Welcome | Hubbard/Gross-Neveu Models + intro by ECT* Director

14:15 → 15:00 Universal critical behavior in Hubbard models with Dirac dispersion

Speaker: Sandro Sorella

15:00 → 15:45 Recent advancements in the functional renormalization group description of the 2D Hubbard model

Speaker: Sabine Andergassen

15:45 → 16:59 Break/Gather Town

16:59 → 17:00 Session Chair: Simon Hands

17:00 → 17:45 Non-perturbative Renormalization Group for DIrac Fermions; interactions and quasi-periodic discrder

Speaker: Vieri Mastropietro

luciditrento21 (1).pdf

17:45 → 18:30 The Majorana-Hubbard Model

Speaker: Ian Affleck

18:30 → 19:00 Close

Tuesday 6 July

13:59 → 14:00 QED3, large N and critical behaviour - Session Chair John Gracey

14:00 → 14:45 Anomalous Dimensions from Massive Vacuum Diagrams

Speaker: Peter Marquard

marquard.pdf

14:45 → 15:30 Rigorous fixed points of 3d and 4d flatland QFTs

Speaker: Daniel Litim

15:30 → 16:59 Break/Gather Town

16:59 → 17:00 Session Chair John Gracey

17:00 → 17:45 Fermions in the Conformal Bootstrap

Speaker: David Poland

Flatland-Poland-7-6-21-v2.pdf

17:45 → 18:30 QED3 in condensed matter: from quantum criticality to instanton zero modes

Speaker: Joseph Maciejko

Trento2021_Maciejko.pdf

18:30 → 19:00 Close

Wednesday 7 July

13:59 → 14:00 Condensed matter applications - Session Chair Holger Gies

14:00 → 14:45 Numerical simulations of Dirac systems

Speaker: Fakher Assaad

Flatland_Assaad.pdf

14:45 → 15:30 Quantum criticality between spin liquids and long-range order

Speaker: Lukas Janssen

2021-07-trento_janssen.pdf

15:30 → 16:59 Poster session Gather Town

16:59 → 17:00 Session Chair Holger Gies

17:00 → 17:20 Gross-Neveu-SO(3) quantum criticality from field theory beyond leading order

Speaker: Shouryya Ray

Flatland21_Ray (1).pdf

17:20 → 17:40 Simulating bot parity sectors of the Hybbard model with tensor networks

Speaker: Johann Ostmeyer

ostmeyer.pdf

17:40 → 18:00 Non-perturbative study of the Fermi velocity renormalization in graphene using large-scale QMC calculation

Speaker: Maksim Ulybyshev

ULYBYSHEV.pdf

18:00 → 18:45 Emergent SO(5) symmetry in the global phase diagram of extended Hubbard model in monolayer graphene

Speaker: Bitan Roy

roy.pdf

18:45 → 19:15 Close

Thursday 8 July

13:59 → 14:00 Numerical simulations - Session Chair Simon Hands

14:00 → 14:45 Exotic quantum criticality: emergent supersymmetry and emergent SO(5) symmetry

Speaker: Hong Yao

14:45 → 15:30 Phases and critical flavor number of 3d Thirring model

Speaker: Andreas Wipf

wipf.pdf

15:30 → 16:59 Break/Gather Town

16:59 → 17:00 Session Chair: Holger Gies

17:00 → 17:45 Is the semimetal-insulator transition in graphene a conformal transition?

Speaker: Pavel Buividovich

Buidovich.pdf

17:45 → 18:30 Lattice in flatland: Investigations of IR conformality and topological defects

Speaker: Nikhil Karthik

nkarthik_flatland.pdf

18:30 → 19:00 Close

Friday 9 July

13:59 → 14:00 SUSY and beyond - Session Chair John Gracey

14:00 → 14:45 Emergent supersymmetry at the critical point of Yukawa systems

Speaker: Omar Zanusso

zanusso-ect2021.pdf

14:45 → 15:30 Lattice studies of supersymmetric Yang--Mills in 2+1 dimensions

Speaker: David Schaich

SCHAICH.pdf

15:30 → 16:59 Break/Gather Town

16:59 → 17:00 Session Chair Simon Hands

17:00 → 17:45 Interacting massless Dirac fermions with spin-charge flip symmetry

Speaker: Shailesh Chandrasekharan

Chandrasekharan.pdf

17:45 → 18:30 Symmetric Mass Generation in Lattice Gauge Theory

Speaker: Simon Catterall

CATTERALL.pdf

18:30 → 19:00 Close