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A non-perturbative lattice regularization of chiral fermions and bosons with anomaly-free symmetry $G$ in 1+1D spacetime is proposed. More precisely, we ask "whether there is a local short-range quantum Hamiltonian with a finite Hilbert…

高能物理 - 格点 · 物理学 2023-02-01 Juven Wang , Xiao-Gang Wen

We report a microscopic mechanism for stabilization of biskyrmions in nature by investigating a minimal classical spin lattice model with nearest neighbour ferromagnetic Heisenberg exchange and static chiral magnetic interaction on the…

强关联电子 · 物理学 2024-05-31 Deepak S. Kathyat , Pinaki Sengupta

We address finite volume effects of lattice QCD calculations in background magnetic fields. Using chiral perturbation theory at next-to-leading order, volume effects are calculated for thermodynamic quantities: the chiral condensate,…

高能物理 - 格点 · 物理学 2023-05-17 Prabal Adhikari , Brian C. Tiburzi

The effect of fermionic string conductivity by purely right (or purely left) moving ``zero modes'' is shown to be governed by a simple Lagrangian characterising a certain ``chiral'' (null current carrying) string model whose dynamical…

高能物理 - 理论 · 物理学 2009-10-31 Brandon Carter , Patrick Peter

We revisit the lattice formulation of the Schwinger model using the Kogut-Susskind Hamiltonian approach with staggered fermions. This model, introduced by Banks et al., contains the mass term $m_{\rm lat} \sum_{n} (-1)^{n} \chi^\dagger_n…

高能物理 - 理论 · 物理学 2023-02-09 Ross Dempsey , Igor R. Klebanov , Silviu S. Pufu , Bernardo Zan

Dirac fermions coupled to gauge fields can exhibit the chiral anomaly even on a finite spatial lattice. A careful description of this phenomenon yields new insights into the nature of spin-charge relations and on-site symmetries (symmetries…

高能物理 - 理论 · 物理学 2018-11-16 Djordje Radicevic

For a generic lattice Hamiltonian of the electron states in Weyl materials, we calculate analytically the chiral (or, equivalently, valley) charge and current densities in the first order in background electromagnetic and strain-induced…

介观与纳米尺度物理 · 物理学 2017-09-19 E. V. Gorbar , V. A. Miransky , I. A. Shovkovy , P. O. Sukhachov

In the presence of cosmic chiral asymmetry, chiral-vorticity and chiral-magnetic effects can play an important role in the generation and evolution of magnetic fields in the early universe. We include these chiral effects in the magnetic…

宇宙学与河外天体物理 · 物理学 2013-05-30 Hiroyuki Tashiro , Tanmay Vachaspati , Alexander Vilenkin

In the last century the non-perturbative regularization of chiral fermions was a long-standing problem. We review how this problem was finally overcome by the formulation of a modified but exact form of chiral symmetry on the lattice. This…

高能物理 - 格点 · 物理学 2011-09-28 Wolfgang Bietenholz

The review of vacuum and matter restructuring in space-time with boundaries is presented. We consider phase properties of confining gauge theories and strongly interacting fermion systems. In particular, the chiral and deconfinement phase…

高能物理 - 理论 · 物理学 2022-08-09 Alexander Molochkov

An ideal gas of twodimensional Dirac fermions in the background of a pointlike magnetic vortex with arbitrary flux is considered. We find that this system acquires fractional electric charge at finite temperatures and determine the…

高能物理 - 理论 · 物理学 2009-11-10 Yurii A. Sitenko , Volodymyr M. Gorkavenko

We study charmonium and bottomonium systems at zero and finite temperatures using Lattice QCD with Fermilab action on anisotropic lattices.

高能物理 - 格点 · 物理学 2009-01-07 K. Petrov

Using the similarity between spacetime torsion and axial gauge couplings, we study torsional contributions to the equilibrium partition function in a stationary background. In the case of a charged fluid minimally coupled to torsion, we…

高能物理 - 理论 · 物理学 2021-05-26 Juan L. Mañes , Manuel Valle , Miguel A. Vazquez-Mozo

We study the frequency dependence of all the chiral vortical and magnetic conductivities for a relativistic gas of free chiral fermions and for a strongly coupled conformal field theory with holographic dual in four dimensions. Both systems…

高能物理 - 唯象学 · 物理学 2014-10-01 Karl Landsteiner , Eugenio Megias , Francisco Peña Benítez

We provide a resolution of an old issue in weak coupling computation of the Chiral Magnetic Effect (CME) current, where a free chiral fermion theory gives two different results depending on the order of the two limits, $\omega\rightarrow 0$…

高能物理 - 唯象学 · 物理学 2014-07-22 Daisuke Satow , Ho-Ung Yee

We consider one-dimensional theories of chiral fermions and bosons on a lattice, which arise as edge states of two-dimensional topological matter breaking time-reversal invariance. We show that hard core bosons or their spin chain…

量子气体 · 物理学 2025-01-28 Manuel Valiente

The presence of asymmetry between fermions of opposite handedness in plasmas of relativistic particles can lead to exponential growth of a helical magnetic field via a small-scale chiral dynamo instability known as the chiral magnetic…

We report on a mean-field study of spontaneous breaking of chiral symmetry for Dirac fermions with contact interactions in the presence of chiral imbalance, which is modelled by nonzero chiral chemical potential. We point out that chiral…

高能物理 - 理论 · 物理学 2015-01-22 P. V. Buividovich

Non-perturbative effect of the formation of a chiral symmetry breaking condensate <\bar\psi\psi> and of a dynamically generated fermion mass in QED in the presence of an external magnetic field is considered. The dynamical mass of a fermion…

高能物理 - 理论 · 物理学 2007-05-23 V. P. Gusynin

We study fermion number non-conservation (or chirality breaking) in Abelian gauge theories at finite temperature. We consider the presence of a chemical potential $\mu$ for the fermionic charge, and monitor its evolution with real-time…

高能物理 - 理论 · 物理学 2020-06-30 Daniel G. Figueroa , Adrien Florio , Mikhail Shaposhnikov