Relativistic Fermions in Flatland: theory and application

Jul 5, 2021, 1:59 PM → Jul 9, 2021, 7:00 PM 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

Mon, July 5

1:59 PM → 2:00 PM Session Chair: Simon Hands

2:00 PM → 2:15 PM Welcome | Hubbard/Gross-Neveu Models + intro by ECT* Director

2:15 PM → 3:00 PM Universal critical behavior in Hubbard models with Dirac dispersion

Speaker: Sandro Sorella

3:00 PM → 3:45 PM Recent advancements in the functional renormalization group description of the 2D Hubbard model

Speaker: Sabine Andergassen

3:45 PM → 4:59 PM Break/Gather Town

4:59 PM → 5:00 PM Session Chair: Simon Hands

5:00 PM → 5:45 PM Non-perturbative Renormalization Group for DIrac Fermions; interactions and quasi-periodic discrder

Speaker: Vieri Mastropietro

luciditrento21 (1).pdf

5:45 PM → 6:30 PM The Majorana-Hubbard Model

Speaker: Ian Affleck

6:30 PM → 7:00 PM Close

Tue, July 6

1:59 PM → 2:00 PM QED3, large N and critical behaviour - Session Chair John Gracey

2:00 PM → 2:45 PM Anomalous Dimensions from Massive Vacuum Diagrams

Speaker: Peter Marquard

marquard.pdf

2:45 PM → 3:30 PM Rigorous fixed points of 3d and 4d flatland QFTs

Speaker: Daniel Litim

3:30 PM → 4:59 PM Break/Gather Town

4:59 PM → 5:00 PM Session Chair John Gracey

5:00 PM → 5:45 PM Fermions in the Conformal Bootstrap

Speaker: David Poland

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

5:45 PM → 6:30 PM QED3 in condensed matter: from quantum criticality to instanton zero modes

Speaker: Joseph Maciejko

Trento2021_Maciejko.pdf

6:30 PM → 7:00 PM Close

Wed, July 7

1:59 PM → 2:00 PM Condensed matter applications - Session Chair Holger Gies

2:00 PM → 2:45 PM Numerical simulations of Dirac systems

Speaker: Fakher Assaad

Flatland_Assaad.pdf

2:45 PM → 3:30 PM Quantum criticality between spin liquids and long-range order

Speaker: Lukas Janssen

2021-07-trento_janssen.pdf

3:30 PM → 4:59 PM Poster session Gather Town

4:59 PM → 5:00 PM Session Chair Holger Gies

5:00 PM → 5:20 PM Gross-Neveu-SO(3) quantum criticality from field theory beyond leading order

Speaker: Shouryya Ray

Flatland21_Ray (1).pdf

5:20 PM → 5:40 PM Simulating bot parity sectors of the Hybbard model with tensor networks

Speaker: Johann Ostmeyer

ostmeyer.pdf

5:40 PM → 6:00 PM Non-perturbative study of the Fermi velocity renormalization in graphene using large-scale QMC calculation

Speaker: Maksim Ulybyshev

ULYBYSHEV.pdf

6:00 PM → 6:45 PM Emergent SO(5) symmetry in the global phase diagram of extended Hubbard model in monolayer graphene

Speaker: Bitan Roy

roy.pdf

6:45 PM → 7:15 PM Close

Thu, July 8

1:59 PM → 2:00 PM Numerical simulations - Session Chair Simon Hands

2:00 PM → 2:45 PM Exotic quantum criticality: emergent supersymmetry and emergent SO(5) symmetry

Speaker: Hong Yao

2:45 PM → 3:30 PM Phases and critical flavor number of 3d Thirring model

Speaker: Andreas Wipf

wipf.pdf

3:30 PM → 4:59 PM Break/Gather Town

4:59 PM → 5:00 PM Session Chair: Holger Gies

5:00 PM → 5:45 PM Is the semimetal-insulator transition in graphene a conformal transition?

Speaker: Pavel Buividovich

Buidovich.pdf

5:45 PM → 6:30 PM Lattice in flatland: Investigations of IR conformality and topological defects

Speaker: Nikhil Karthik

nkarthik_flatland.pdf

6:30 PM → 7:00 PM Close

Fri, July 9

1:59 PM → 2:00 PM SUSY and beyond - Session Chair John Gracey

2:00 PM → 2:45 PM Emergent supersymmetry at the critical point of Yukawa systems

Speaker: Omar Zanusso

zanusso-ect2021.pdf

2:45 PM → 3:30 PM Lattice studies of supersymmetric Yang--Mills in 2+1 dimensions

Speaker: David Schaich

SCHAICH.pdf

3:30 PM → 4:59 PM Break/Gather Town

4:59 PM → 5:00 PM Session Chair Simon Hands

5:00 PM → 5:45 PM Interacting massless Dirac fermions with spin-charge flip symmetry

Speaker: Shailesh Chandrasekharan

Chandrasekharan.pdf

5:45 PM → 6:30 PM Symmetric Mass Generation in Lattice Gauge Theory

Speaker: Simon Catterall

CATTERALL.pdf

6:30 PM → 7:00 PM Close