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Applied Physics Letters, 2020
We report on the observation of a large negative magnetoresistance (MR) with magnitudes of −67%, −45%, and −31% in antiferromagnetic half-Heusler compounds TbPtBi, HoPtBi, and ErPtBi, respectively. It is found that with increasing temperature, the values
Jie Chen +6 more
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We report on the observation of a large negative magnetoresistance (MR) with magnitudes of −67%, −45%, and −31% in antiferromagnetic half-Heusler compounds TbPtBi, HoPtBi, and ErPtBi, respectively. It is found that with increasing temperature, the values
Jie Chen +6 more
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Chiral effective action from anomalies
Physical Review D, 1986We use chiral anomalies to obtain a Skyrme-Witten action for the effective dynamics of an external flavor phase coupled to two-dimensional QCD. We also make some comments on the four-dimensional case.
, Falomir, , Naón, , Santangelo
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Quantized Axial Charge of Staggered Fermions and the Chiral Anomaly.
Physical Review LettersIn the 1+1D ultralocal lattice Hamiltonian for staggered fermions with a finite-dimensional Hilbert space, there are two conserved, integer-valued charges that flow in the continuum limit to the vector and axial charges of a massless Dirac fermion with a
Arkya Chatterjee +2 more
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Chiral anomaly at finite temperature
Physical Review D, 1988Based on a simplified derivation of the Abelian chiral anomaly, we prove the temperature independence of the anomaly in 3+1 dimensions.
, Liu, , Ni
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Chiral-Anomaly-Driven Casimir-Lifshitz Torque between Weyl Semimetals.
Physical Review Letters, 2020We propose a new mechanism to generate the Casimir-Lifshitz torque between Weyl semimetals arising from the chiral anomaly. For short distances ranging from a nanometer to a few tens of nanometers, chiral anomaly is manifested via a Casimir-Lifshitz ...
Liang Chen, Kai-Ning Chang
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The chiral anomaly and thermopower of Weyl fermions in the half-Heusler GdPtBi.
Nature Materials, 2016The Dirac and Weyl semimetals are unusual materials in which the nodes of the bulk states are protected against gap formation by crystalline symmetry.
M. Hirschberger +8 more
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Science, 2020
Nuclear Physics Pi mesons, also known as pions, consist of a quark and an antiquark and are extremely unstable. Neutral pions have a lifetime of only ∼80 attoseconds, decaying into two photons. Quantum chromodynamics (QCD), the theory of quarks and gluons, predicts this decay and the associated lifetime using the mechanism of broken chiral symmetry—the
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Nuclear Physics Pi mesons, also known as pions, consist of a quark and an antiquark and are extremely unstable. Neutral pions have a lifetime of only ∼80 attoseconds, decaying into two photons. Quantum chromodynamics (QCD), the theory of quarks and gluons, predicts this decay and the associated lifetime using the mechanism of broken chiral symmetry—the
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1989
The Dirac operator on a manifold M is a first order partial differential operator acting on sections of a spin bundle over M. The Dirac operator is elliptic when the metric of M is positive definite. The main task in this chapter is to study properties of the determinant of the Dirac operator.
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The Dirac operator on a manifold M is a first order partial differential operator acting on sections of a spin bundle over M. The Dirac operator is elliptic when the metric of M is positive definite. The main task in this chapter is to study properties of the determinant of the Dirac operator.
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Chiral anomalies and point-splitting regularization
Physical Review D, 1988The anomalies of chiral gauge theories are discussed from the point of view of point-splitting regularization. The integrability of the regularized current is examined. Its relations with the Wess-Zumino consistency condition and Bose symmetry of the regularized Feynman diagrams are discussed.
, Qiu, , Ren
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1994
Start with the Dirac-Maxwell Lagrangian density. Let us consider $$ \begin{gathered} \mathcal{L}{\text{ = }}\left( {1/4{{\text{e}}^2}} \right){F_{\mu \upsilon }}{F^{\mu \upsilon }} + \overline \psi i{\gamma _\mu }{D^\mu }\psi - m\overline \psi \psi \hfill \\{D^\mu } = {\partial _\mu } + {A_\mu } \hfill \\\end{gathered} $$ (4.1.1)
Mira Dey, Jishnu Dey
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Start with the Dirac-Maxwell Lagrangian density. Let us consider $$ \begin{gathered} \mathcal{L}{\text{ = }}\left( {1/4{{\text{e}}^2}} \right){F_{\mu \upsilon }}{F^{\mu \upsilon }} + \overline \psi i{\gamma _\mu }{D^\mu }\psi - m\overline \psi \psi \hfill \\{D^\mu } = {\partial _\mu } + {A_\mu } \hfill \\\end{gathered} $$ (4.1.1)
Mira Dey, Jishnu Dey
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