Results 81 to 90 of about 890,334 (313)
Chiral Anomaly from Strain-Induced Gauge Fields in Dirac and Weyl Semimetals
Physical Review X, 2016 Dirac and Weyl semimetals form an ideal platform for testing ideas developed in high-energy physics to describe massless relativistic particles. One such quintessentially field-theoretic idea of the chiral anomaly already resulted in the prediction and ...
D. I. Pikulin, Anffany Chen, M. Franz
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Fate of Quantum Anomalies for 1d lattice chiral fermion with a simple non-Hermitian Hamiltonian
Journal of High Energy Physics, 2023 It is generally believed that the 1+1D model for a single chiral fermion does not exist by itself alone on lattice. The obstruction to such a lattice realization is the failure to reproduce the quantum anomalies of a chiral fermion in continuum.
Wei-Qiang Chen +4 more
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Chiral Anomalies and Differential Geometry [PDF]
, 1985 Some properties of chiral anomalies are described from a geometric point of view. Topics include chiral anomalies and differential forms, transformation properties of the anomalies, identification and use of the anomalies, and normalization of the anomalies. 22 references. (WHK)
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Direct Evidence of Topological Dirac Fermions in a Low Carrier Density Correlated 5d Oxide
Advanced Functional Materials, EarlyView.The 5d oxide BiRe2O6 is discovered as a low‐carrier‐density topological semimetal hosting symmetry‐protected Dirac fermions stabilized by nonsymmorphic symmetries. Angle‐resolved photoemission spectroscopy, quantum oscillations, and magnetotransport measurements reveal gapless Dirac cones, quasi‐2D Fermi surfaces, high carrier mobility, and a field ...
Premakumar Yanda +11 more
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Nambu–Jona-Lasinio model in a parallel electromagnetic field
Physics Letters B, 2018 We explore the features of the UA(1) and chiral symmetry breaking of the Nambu–Jona-Lasinio model without the Kobayashi–Maskawa–'t Hooft determinant term in the presence of a parallel electromagnetic field. We show that the electromagnetic chiral anomaly
Lingxiao Wang +3 more
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DMRG study of the higher-charge Schwinger model and its ’t Hooft anomaly
Journal of High Energy Physics, 2022 The charge-q Schwinger model is the (1 + 1)-dimensional quantum electrodynamics (QED) with a charge-q Dirac fermion. It has the ℤ q 1-form symmetry and also enjoys the ℤ q chiral symmetry in the chiral limit, and there is a mixed ’t Hooft anomaly between
Masazumi Honda +2 more
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Chiral anomaly trapped in Weyl metals: Nonequilibrium valley polarization at zero magnetic field
SciPost Physics, 2021 In Weyl semimetals the application of parallel electric and magnetic fields leads to valley polarization -- an occupation disbalance of valleys of opposite chirality -- a direct consequence of the chiral anomaly.
Pablo M. Perez-Piskunow, Nicandro Bovenzi, Anton R. Akhmerov, Maxim Breitkreiz
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Gravitational F-terms of N=1 Supersymmetric SU(N) Gauge Theories
, 2003 We use the generalized Konishi anomaly equations and R-symmetry anomaly to compute the exact perturbative and non-perturbative gravitational F-terms of four-dimensional N=1 supersymmetric gauge theories. We formulate the general procedure for computation
A. Brandhuber +16 more
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Topological responses from chiral anomaly in multi-Weyl semimetals [PDF]
, 2017 Multi-Weyl semimetals are a kind of topological phase of matter with discrete Weyl nodes characterized by multiple monopole charges, in which the chiral anomaly, the anomalous nonconservation of an axial current, occurs in the presence of electric and ...
Ze-Min Huang, Jianhui Zhou, S. Shen
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Chiral anomaly and Schwinger effect in non-abelian gauge theories [PDF]
Journal of High Energy Physics, 2018 We study the production of chiral fermions in a background of a strong non-abelian gauge field with a non-vanishing Chern-Pontryagin density. We discuss both pair production analogous to the Schwinger effect as well as asymmetric production through the ...
V. Domcke +3 more
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