Exact lattice chiral symmetry in 2d gauge theory
We construct symmetry-preserving lattice regularizations of 2D QED with one and two
flavors of Dirac fermions, as well as the “3450” chiral gauge theory, by leveraging …
flavors of Dirac fermions, as well as the “3450” chiral gauge theory, by leveraging …
Lattice regularization of reduced Kähler-Dirac fermions and connections to chiral fermions
S Catterall - SciPost Physics, 2024 - scipost.org
We show how a path integral for reduced Kähler-Dirac fermions suffers from a phase
ambiguity associated with the fermion measure that is an analog of the measure problem …
ambiguity associated with the fermion measure that is an analog of the measure problem …
Toward a Ginsparg-Wilson lattice Hamiltonian
M Clancy - Physical Review D, 2024 - APS
To address quantum computation of quantities in quantum chromodynamics (QCD) for
which chiral symmetry is important, it would be useful to have the Hamiltonian for a fermion …
which chiral symmetry is important, it would be useful to have the Hamiltonian for a fermion …
Quantized axial charge of staggered fermions and the chiral anomaly
In the 1+ 1D ultra-local lattice Hamiltonian for staggered fermions with a finite-dimensional
Hilbert space, there are two conserved, integer-valued charges that flow in the continuum …
Hilbert space, there are two conserved, integer-valued charges that flow in the continuum …
Chiral gauge theory at the boundary between topological phases
DB Kaplan - Physical Review Letters, 2024 - APS
I demonstrate how chiral fermions with an exact gauge symmetry can appear on the d-
dimensional boundary of a finite volume (d+ 1)-dimensional manifold, without any light …
dimensional boundary of a finite volume (d+ 1)-dimensional manifold, without any light …
Chiral symmetry and Atiyah-Patodi-Singer index theorem for staggered fermions
M Nguyen, H Singh - arXiv preprint arXiv:2405.11348, 2024 - arxiv.org
We consider the Atiyah-Patodi-Singer (APS) index theorem corresponding to the chiral
symmetry of a continuum formulation of staggered fermions called K\" ahler-Dirac fermions …
symmetry of a continuum formulation of staggered fermions called K\" ahler-Dirac fermions …
Topics in Chiral Symmetry on the Lattice
M Clancy - 2024 - search.proquest.com
There currently does not exist a good regulator for chiral gauge theories on the lattice. A
number of approaches have been attempted, including domain wall fermions and overlap …
number of approaches have been attempted, including domain wall fermions and overlap …