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We study boundary states for Dirac fermions in d=1+1 dimensions that preserve Abelian chiral symmetries, meaning that the left- and right-moving fermions carry different charges. We derive simple expressions, in terms of the fermion charge…

High Energy Physics - Theory · Physics 2020-08-06 Philip Boyle Smith , David Tong

We consider 2+1 dimensional noncommutative models of scalar and fermionic fields coupled to the Chern-Simons field. We show that, at least up to one loop, the model containing only a fermionic field in the fundamental representation…

High Energy Physics - Theory · Physics 2009-11-10 E. A. Asano , L. C. T. Brito , M. Gomes , A. Yu. Petrov , A. J. da Silva

Applying the results of Ref.[1], we carry out the non-abelian bosonization for a class of free fermion symmetry-protected topological states (SPTs). The resulting boson theories are non-linear sigma models with topological $\theta$ term,…

Strongly Correlated Electrons · Physics 2022-06-22 Yen-Ta Huang , Dung-Hai Lee

A fermion-boson-type Composite Model is proposed. Elementary fields are only one kind of spin-1/2 and spin-0 {\bf preon}. Both are in the global supersymmetric pair with the common electric charge of e/6 and belong to the fundamental…

High Energy Physics - Phenomenology · Physics 2007-07-10 Takeo Matsushima

We construct a family of non-invertible topological defects in two-dimensional theories of $n$ Weyl fermions. The construction relies on the existence of $G$-symmetric conformal boundary conditions for $n$ Dirac fermions. Upon unfolding,…

High Energy Physics - Theory · Physics 2026-05-21 Pengcheng Wei , Yunqin Zheng

We derive supersymmetric quantum chromodynamics from a noncommutative manifold, using the spectral action principle of Chamseddine and Connes. After a review of the Einstein-Yang-Mills system in noncommutative geometry, we establish in full…

High Energy Physics - Theory · Physics 2011-03-22 Thijs van den Broek , Walter D. van Suijlekom

A brief survey of fermion localization mechanism on a domain wall ("thick brane") generated by a topologically nontrivial vacuum configuration of scalar fields is given. The extension of scalar fields interaction with fermions which…

High Energy Physics - Theory · Physics 2013-11-04 Alexander A. Andrianov , Vladimir A. Andrianov , Oleg O. Novikov

We consider simple CFT models which contain massless bosons, or massless fermions or a supersymmetric combination of the two, on the strip. We study the deformations of these models by relevant boundary operators. In particular, we work out…

High Energy Physics - Theory · Physics 2009-10-31 Tasneem Zehra Husain , Maxim Zabzine

Noncommutative spectral geometry succeeds in explaining the physics of the Standard Model of electroweak and strong interactions in all its details as determined by experimental data. Moreover, by construction the theory lives at very high…

High Energy Physics - Theory · Physics 2011-03-21 Mairi Sakellariadou

We present a new staggered discretization of the Dirac operator. Doubling gives only a doublet of Dirac fermions which we propose to interpret as a physical (lepton or quark) doublet. If coupled with gauge fields, an $(1+\gamma^5)$ chiral…

High Energy Physics - Lattice · Physics 2009-12-09 I. Schmelzer

We show that the leading coupling between a shift symmetric inflaton and the Standard Model fermions leads to an induced electroweak symmetry breaking due to particle production during inflation, and as a result, a unique oscillating…

High Energy Physics - Phenomenology · Physics 2020-01-29 Anson Hook , Junwu Huang , Davide Racco

We extend to a non-Hermitian fermionic quantum field theory with PT symmetry our previous discussion of second quantization, discrete symmetry transformations, and inner products in a scalar field theory [arXiv:2006.06656]. For…

High Energy Physics - Theory · Physics 2022-09-12 Jean Alexandre , John Ellis , Peter Millington

This paper continues the study of quasiparticles on complex manifolds with anticommuting co-ordinates, and shows that on increasing the dimensionality of the complex manifold from $\mathbb{C}^{\wedge 2}$ to $\mathbb{C}^{\wedge 6}$, the…

General Physics · Physics 2023-06-13 R. N. C. Pfeifer

The Thirring model is an interacting fermion theory with current-current interaction. The model in $1+2$ dimensions has applications in condensed-matter physics to describe the electronic excitations of Dirac materials. Earlier…

High Energy Physics - Lattice · Physics 2019-09-11 Julian Lenz , Björn Wellegehausen , Andreas Wipf

The fermion mass hierarchy and finding a predictive mechanism of the flavor mixing parameters remain two of the least understood puzzles facing particle physics today. In this work, we demonstrate how the realization of the Dirac algebra in…

High Energy Physics - Phenomenology · Physics 2010-02-03 David Dooling , Damien A. Easson , Kyungsik Kang

Some aspects of the theory of fermions living on three dimensional spacetime with a flat co-dimension one boundary are discussed, particularly a case where the boundary condition preserves scale and translation invariance but violates the…

High Energy Physics - Theory · Physics 2024-03-21 Gordon W. Semenoff

It is well-known that any covering space of a Riemannian manifold has the natural structure of a Riemannian manifold. This article contains a noncommutative generalization of this fact. Since any Riemannian manifold with a Spin-structure…

Operator Algebras · Mathematics 2018-04-18 Petr Ivankov

The generic supersymmetric standard model is a model built from a supersymmetrized standard model field spectrum the gauge symmetries only. The popular minimal supersymmetric standard model differs from the generic version in having…

High Energy Physics - Phenomenology · Physics 2009-11-07 Otto C. W. Kong

We describe the scalar and spinor fields on noncommutative sphere starting from canonical realizations of the enveloping algebra ${\cal A}={\cal U}{u(2))}$. The gauge extension of a free spinor model, the Schwinger model on a noncommutative…

High Energy Physics - Theory · Physics 2015-06-26 Peter Presnajder

We explore new aspects of internal fermionic shifting symmetries, present in physical systems such as free Dirac spinors and p-form tensor-spinor fields. We propose a novel procedure to gauge these global symmetries, which also introduces a…

High Energy Physics - Theory · Physics 2024-11-07 Federico Ambrosino , Ran Luo , Yi-Nan Wang , Yi Zhang