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We show that Weyl semimetals exhibit a mixed axial-torsional anomaly in the presence of axial torsion, a concept exclusive of these materials with no known natural fundamental interpretation in terms of the geometry of spacetime. This…

介观与纳米尺度物理 · 物理学 2019-02-13 Yago Ferreiros , Yaron Kedem , Emil J. Bergholtz , Jens H. Bardarson

We discuss the connection between the integer moments of the Fermi distribution function that occur in the Sommerfeld expansion and the coefficients that occur in anomalous conservation laws for chiral fermions. As an illustration we…

介观与纳米尺度物理 · 物理学 2018-07-25 Michael Stone , JiYoung Kim

Chiral anomaly is a fundamental aspect of quantum theories with chiral fermions. How such microscopic anomaly manifests itself in a macroscopic many-body system with chiral fermions, is a highly nontrivial question that has recently…

核理论 · 物理学 2018-05-09 Shuzhe Shi , Yin Jiang , Elias Lilleskov , Jinfeng Liao

We have considered the problem of the influence of inhomogeneity of gravitational field on transport effects predicted by the field theory describing massless Dirac fermions in the Maxwell and dark matter background. As a model of dark…

广义相对论与量子宇宙学 · 物理学 2026-04-27 Marek Rogatko , Karol I. Wysokinski

We study the excitation of the electric current of chiral fermions along the external magnetic field, known as the chiral magnetic effect, in the presence of the background axial-vector field. The calculation of the current is based on the…

高能物理 - 唯象学 · 物理学 2018-08-22 Maxim Dvornikov

We present evidence that anomalous transport in the classical standard map results in strong enhancement of fluctuations in the localization length of quasienergy states in the corresponding quantum dynamics. This generic effect occurs even…

chao-dyn · 物理学 2009-10-31 Bala Sundaram , G. M. Zaslavsky

We derive the quantum kinetic theory for fermions with arbitrary mass in a background electromagnetic field from the Wigner-function approach. Since spin of massive fermions is a dynamical degree of freedom, the kinetic equations with the…

高能物理 - 唯象学 · 物理学 2019-11-27 Koichi Hattori , Yoshimasa Hidaka , Di-Lun Yang

We construct the three-dimensional effective field theory which reproduces low-momentum static correlation functions in four-dimensional quantum field theories with U(1) axial anomalies and a dynamical vector gauge field, in thermal…

高能物理 - 理论 · 物理学 2013-11-27 Kristan Jensen , Pavel Kovtun , Adam Ritz

Nonlinear transport phenomena induced by the chiral anomaly are explored within a 4D field theory defined holographically as $U(1)_V\times U(1)_A$ Maxwell-Chern-Simons theory in Schwarzschild-$AdS_5$. First, in presence of external…

高能物理 - 理论 · 物理学 2019-03-19 Yanyan Bu , Tuna Demircik , Michael Lublinsky

We study electric field and temperature gradient driven magnetoconductivity of a Weyl semimetal system. To analyze the responses, we utilize the kinetic equation with semiclassical equations of motion modified by the Berry curvature and…

介观与纳米尺度物理 · 物理学 2021-02-16 Vladimir A. Zyuzin

We elaborate the quasiclassical approach to obtain the modified chiral magnetic effect in the case when massless charged fermions interact with electromagnetic fields and the background matter by the electroweak forces. The derivation of…

高能物理 - 唯象学 · 物理学 2018-03-16 Maxim Dvornikov , Victor B. Semikoz

We review our recent works on the quantum transport, mainly in topological semimetals and also in topological insulators, organized according to the strength of the magnetic field. At weak magnetic fields, we explain the negative…

介观与纳米尺度物理 · 物理学 2019-05-07 Hai-Peng Sun , Hai-Zhou Lu

We describe the physics of fermionic Lifschitz theories once the anisotropicscaling exponent is made arbitrarily small. In this limit the system acquires an enhanced(Carrollian) boost symmetry. We show, both through the explicit computation…

高能物理 - 理论 · 物理学 2020-02-19 Christian Copetti

Motivated by the consistency of a global anomaly with the second law of thermodynamics, we propose a form for the anomaly induced charge/energy transport in arbitrary even dimensions. In a given dimension, this form exhausts all second law…

高能物理 - 理论 · 物理学 2011-11-04 R. Loganayagam

In 3+1 dimensional spacetime, two vector gauge anomalies are known: The chiral anomaly and the mixed axial-gravitational anomaly. While the former is well documented and tied to the presence of a magnetic field, the latter instead requires…

介观与纳米尺度物理 · 物理学 2021-11-25 Tobias Holder , Daniel Kaplan , Roni Ilan , Binghai Yan

We analyze the chiral transport terms in relativistic superfluid hydrodynamics. In addition to the spontaneously broken symmetry current, we consider an arbitrary number of unbroken symmetries and extend the results of arXiv:1105.3733. We…

高能物理 - 理论 · 物理学 2013-12-12 Yasha Neiman , Yaron Oz

We employ a 3+1D anomalous hydrodynamics with initial condition generated by HIJING to simulate the chiral vortical effect and the chiral magnetic effect in heavy-ion collisions. This allows us to calculate the charge-dependent two-particle…

核理论 · 物理学 2017-09-28 Xingyu Guo , Dmitri E. Kharzeev , Xu-Guang Huang , Wei-Tian Deng , Yuji Hirono

Chiral anomaly is a key feature of Lorentz-invariant quantum field theories: in presence of parallel external electric and magnetic fields, the number of massless Weyl fermions of a given chirality is not conserved. In condensed matter,…

强关联电子 · 物理学 2026-02-20 Shantonu Mukherjee , Sayantan Sharma , Hridis K. Pal

Through analyzing the quark propagator under the magnetic field, we establish that the axial anomaly originates from an additional Dirac structure in quark propagator induced by the magnetic field. This Dirac structure also allows one to…

高能物理 - 理论 · 物理学 2026-04-28 Fei Gao , Yi Lu , Minghui Ding , Xinyang Wang , Yuxin Liu

We derive the chiral kinetic theory under the presence of a gravitational Riemann curvature. It is well-known that in the chiral kinetic theory there inevitably appears a redundant ambiguous vector corresponding to the choice of the Lorentz…

高能物理 - 理论 · 物理学 2021-05-06 Tomoya Hayata , Yoshimasa Hidaka , Kazuya Mameda