scholarly journals Non-Hermitian Chiral Magnetic Effect in Equilibrium

Symmetry ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 761 ◽  
Author(s):  
Maxim N. Chernodub ◽  
Alberto Cortijo
Keyword(s):  
Quantum Mechanics ◽  
Thermodynamic Limit ◽  
Magnetic Effect ◽  
Charge Conservation ◽  
Bloch Theorem ◽  
Chiral Magnetic Effect ◽  
Fermionic Systems

We analyze the chiral magnetic effect for non-Hermitian fermionic systems using the bi-orthogonal formulation of quantum mechanics. In contrast to the Hermitian counterparts, we show that the chiral magnetic effect takes place in equilibrium when a non-Hermitian system is considered. The key observation is that for non-Hermitian charged systems, there is no strict charge conservation as understood in Hermitian systems, so the Bloch theorem preventing currents in the thermodynamic limit and in equilibrium does not apply.

scholarly journals Constraining the Chiral Magnetic Effect with charge-dependent azimuthal correlations in Pb-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}} $$ = 2.76 and 5.02 TeV

2020 ◽  
Vol 2020 (9) ◽  
Author(s):  
S. Acharya ◽  
◽  
D. Adamová ◽  
A. Adler ◽  
J. Adolfsson ◽  
...  
Keyword(s):  
Charged Particles ◽  
Magnetic Effect ◽  
Anisotropic Flow ◽  
Charge Conservation ◽  
Particle Correlations ◽  
Azimuthal Correlations ◽  
Chiral Magnetic Effect ◽  
Local Charge ◽  
Peripheral Collisions ◽  
Dependent Signal

Abstract Systematic studies of charge-dependent two- and three-particle correlations in Pb-Pb collisions at $$ \sqrt{s_{\mathrm{NN}}} $$ s NN = 2.76 and 5.02 TeV used to probe the Chiral Magnetic Effect (CME) are presented. These measurements are performed for charged particles in the pseudorapidity (η) and transverse momentum (pT) ranges |η| < 0.8 and 0.2 < pT< 5 GeV/c. A significant charge-dependent signal that becomes more pronounced for peripheral collisions is reported for the CME-sensitive correlators γ1, 1 = 〈cos(φα + φβ − 2Ψ2)〉 and γ1, − 3 = 〈cos(φα − 3φβ + 2Ψ2)〉. The results are used to estimate the contribution of background effects, associated with local charge conservation coupled to anisotropic flow modulations, to measurements of the CME. A blast-wave parametrisation that incorporates local charge conservation tuned to reproduce the centrality dependent background effects is not able to fully describe the measured γ1,1. Finally, the charge and centrality dependence of mixed-harmonics three-particle correlations, of the form γ1, 2 = 〈cos(φα + 2φβ − 3Ψ3)〉, which are insensitive to the CME signal, verify again that background contributions dominate the measurement of γ1,1.

scholarly journals Chiral Magnetic Effect of Hot Electrons

2020 ◽  
Vol 125 (26) ◽  
Author(s):  
S. Nandy ◽  
D. A. Pesin
Keyword(s):  
Magnetic Effect ◽  
Hot Electrons ◽  
Chiral Magnetic Effect

scholarly journals Lattice quantum Monte Carlo study of chiral magnetic effect in Dirac semimetals

2018 ◽  
Vol 396 ◽  
pp. 78-86 ◽  
Author(s):  
D.L. Boyda ◽  
V.V. Braguta ◽  
M.I. Katsnelson ◽  
A.Yu. Kotov
Keyword(s):  
Monte Carlo ◽  
Quantum Monte Carlo ◽  
Monte Carlo Study ◽  
Magnetic Effect ◽  
Chiral Magnetic Effect ◽  
Lattice Quantum ◽  
Dirac Semimetals
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