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The effect of an external magnetic field in QCD phase diagram, namely, in the the location of the critical end point (CEP) is investigated. Using the 2+1 flavor Nambu--Jona-Lasinio model with Polyakov loop, it is shown that when an external…

High Energy Physics - Phenomenology · Physics 2015-09-04 Márcio Ferreira , Pedro Costa , Constança Providência

We consider relativistic fermionic systems in lattice regularization out of equilibrium. The chiral magnetic conductivity $\sigma_{CME}$ is calculated in spatially infinite system for the case when the chiral chemical potential depends on…

High Energy Physics - Phenomenology · Physics 2022-09-07 Chitradip Banerjee , Meir Lewkowicz , M. A. Zubkov

We argue that chiral symmetry breaking in three dimensional QCD can be identified with N\'eel order in 2-dimensional quantum antiferromagnets. When operators which drive the chiral transition are added to these theories, we postulate that…

High Energy Physics - Phenomenology · Physics 2009-10-28 H. Hamidian , S. Jaimungal , G. W. Semenoff , P. Suranyi , L. C. R. Wijewardhana

We investigate the chiral symmetry and its spontaneous breaking at finite temperature and in an external magnetic field with four-fermion interactions of different channels. Quantum and thermal fluctuations are included within the…

High Energy Physics - Phenomenology · Physics 2017-10-25 Wei-jie Fu , Yu-xin Liu

In the presence of the fluid helicity $\boldsymbol{v} \cdot \boldsymbol{\omega}$, the magnetic field induces an electric current of the form $\boldsymbol{j} = C_{\rm HME} (\boldsymbol{v} \cdot \boldsymbol{\omega}) \boldsymbol{B}$. This is…

High Energy Physics - Theory · Physics 2021-06-08 Naoki Yamamoto , Di-Lun Yang

We investigate the existence (or lack thereof) of the chiral magnetic effect in the framework of finite temperature field theory, studied through the path integral approach and regularized via the zeta function technique. We show that,…

Mesoscale and Nanoscale Physics · Physics 2020-12-02 C. G. Beneventano , M. Nieto , E. M. Santangelo

The search for the chiral magnetic effect (CME) in relativistic heavy-ion collisions helps us understand the $\mathcal{CP}$ symmetry breaking in strong interactions and the topological nature of the QCD vacuum. Since the background and…

Nuclear Theory · Physics 2024-02-22 Bang-Xiang Chen , Xin-Li Zhao , Guo-Liang Ma

We study the influence of the chiral phase transition on the chiral magnetic effect. The azimuthal charge-particle correlations as functions of the temperature are calculated. It is found that there is a pronounced cusp in the correlations…

High Energy Physics - Phenomenology · Physics 2015-05-18 Wei-jie Fu , Yu-xin Liu , Yue-liang Wu

In this thesis, we study the Chiral Magnetic Effect (CME) and the Chiral Separation Effect (CSE) using lattice QCD simulations. We completely characterize the CSE in QCD using $2+1$ simulations of staggered quarks tuned at the physical…

High Energy Physics - Lattice · Physics 2025-09-09 Eduardo Garnacho-Velasco

We study relation between Chiral Separation Effect (CSE) and Chiral Anomaly, and argue that CSE does not inherit the immutability of Chiral Anomaly. For QED in the leading order in electric charge, with point-splitting regularization in…

High Energy Physics - Phenomenology · Physics 2022-09-20 Z. V. Khaidukov , R. A. Abramchuk

We outline a novel chiral kinetic theory framework for systematic computations of the Chiral Magnetic Effect (CME) in ultrarelativistic heavy-ion collisions. The real part of the fermion determinant in the QCD effective action is expressed…

High Energy Physics - Phenomenology · Physics 2018-03-28 Niklas Mueller , Raju Venugopalan

In this paper Chiral Magnetic Effect (CME) in Dirac semimetals is studied by means of lattice Monte Carlo simulation. We measure conductivity of Dirac semimetals as a function of external magnetic field in parallel $\sigma_{\parallel}$ and…

Strongly Correlated Electrons · Physics 2018-08-15 D. L. Boyda , V. V. Braguta , M. I. Katsnelson , A. Yu. Kotov

It is known that in certain non-bipartite quasi-one dimensional spin systems in a magnetic field, in addition to the usual Pauli coupling of the spins to the field, new parity breaking three spin interactions, i.e. chiral spin interactions,…

Strongly Correlated Electrons · Physics 2009-10-31 R. Chitra , R. Citro

The recent lattice calculation at finite axial chemical potential suggests that the induced current density of the chiral magnetic effect (CME) is somehow suppressed comparing with the standard analytical formula. We show in a NJL-type…

High Energy Physics - Phenomenology · Physics 2012-06-26 Zhao Zhang

The chiral anomaly is a fundamental quantum mechanical phenomenon which is of great importance to both particle physics and condensed matter physics alike. In the context of QED it manifests as the breaking of chiral symmetry in the…

Strongly Correlated Electrons · Physics 2021-05-12 Colin Rylands , Alireza Parhizkar , Anton A. Burkov , Victor Galitski

Chiral magnetic effect is a quantum phenomenon that is breaking of chiral symmetry of relativistic Weyl fermions by quantum fluctuation under paralleled electric field E and magnetic field B. Intuitively, Weyl fermions with different…

Materials Science · Physics 2018-05-28 Yang-Yang Lv , Xiao Li , Bin Pang , Y. B. Chen , Shu-Hua Yao , Jian Zhou , Yan-Feng Chen

In this paper a pair of observables are proposed as alternative ways, by examining the fluctuation of net momentum-ordering of charged pairs, to study the charge separation induced by the Chiral Magnetic Effect (CME) in relativistic heavy…

Nuclear Experiment · Physics 2020-06-24 A. H. Tang

We present a first-principle study of anomaly induced transport phenomena by performing real-time lattice simulations with dynamical fermions coupled simultaneously to non-Abelian $SU(N_c)$ and Abelian $U(1)$ gauge fields. Investigating the…

High Energy Physics - Phenomenology · Physics 2016-10-05 Niklas Mueller , Sören Schlichting , Sayantan Sharma

Metastable domains of fluctuating topological charges can change the chirality of quarks and induce local parity violation in quantum chromodynamics. This can lead to observable charge separation along the direction of the strong magnetic…

High Energy Physics - Experiment · Physics 2018-02-01 Jie Zhao

The Chiral Magnetic Effect (CME) refers to charge separation along a strong magnetic field, due to topological charge fluctuations in QCD. Charge correlation ($\Delta\gamma$) signals consistent with CME have been first observed almost a…

Nuclear Experiment · Physics 2019-06-05 Hanlin Li , Jie Zhao , Fuqiang Wang