Thermal chiral vortical and magnetic waves: New excitation modes in chiral fluids

Kalaydzhyan, Tigran; Murchikova, E. M.

doi:10.1016/j.nuclphysb.2017.03.019

Cited by 17 publications

(35 citation statements)

References 23 publications

(36 reference statements)

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“…In this paper, we perform an independent systematic and complete calculation of the relevant hydrodynamic modes at nonzero chemical potential, charge density, and magnetic field. Whenever the relevant quantities are provided, we find complete agreement with [27], and we agree at vanishing chemical potential and charge density with the results shown in [26] for ω 1 , ω 2 , ω 3 (see also Appendix A for a discussion of the different hydrodynamic frames). A hydrodynamic analysis similar to [26,27] for a system containing both the axial and a conserved vector current has also appeared very recently [28].…”

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confidence: 77%

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Quasinormal modes of charged magnetic black branes & chiral magnetic transport

Ammon

Kaminski

Koirala

et al. 2017

J. High Energ. Phys.

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We compute quasinormal modes (QNMs) of the metric and gauge field perturbations about black branes electrically and magnetically charged in the Einstein-MaxwellChern-Simons theory. By the gauge/gravity correspondence, this theory is dual to a particular class of field theories with a chiral anomaly, in a thermal charged plasma state subjected to a constant external magnetic field, B. The QNMs are dual to the poles of the two-point functions of the energy-momentum and axial current operators, and they encode information about the dissipation and transport of charges in the plasma. Complementary to the gravity calculation, we work out the hydrodynamic description of the dual field theory in the presence of a chiral anomaly, and a constant external B. We find good agreement with the weak field hydrodynamics, which can extend beyond the weak B regime into intermediate regimes. Furthermore, we provide results that can be tested against thermodynamics and hydrodynamics in the strong B regime. We find QNMs exhibiting Landau level behavior, which become long-lived at large B if the anomaly coefficient exceeds a critical magnitude. Chiral transport is analyzed beyond the hydrodynamic approximation for the five (formerly) hydrodynamic modes, including a chiral magnetic wave.

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supporting

confidence: 77%

“…Anomaly-driven effects such as CME and CVE reveal themselves in the transport properties of a system outside of equilibrium. The hydrodynamic description of chiral transport in weak magnetic fields 2 in the case of a single axial current has been considered recently in [26,27]. In these works, part of the hydrodynamic modes were given explicitely.…”

mentioning

confidence: 99%

Quasinormal modes of charged magnetic black branes & chiral magnetic transport

Ammon

Kaminski

Koirala

et al. 2017

J. High Energ. Phys.

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“…What we have shown in this paper may have some important consequences. First let us recall that the chiral Alfvén wave was found firstly as a new gapless excitation in a fluid with one single chirality, in the LL frame [24,25,48]. Interestingly if we repeat the computations in the Lab frame we will see that at zero density limit, the chiral Alfvén wave basically does not exist in this frame.…”

Section: Summary Conclusion and Outlookmentioning

confidence: 85%

Hydrodynamic excitations from chiral kinetic theory and the hydrodynamic frames

Abbasi

Taghinavaz

Naderi

2018

J. High Energ. Phys.

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In the framework of chiral kinetic theory (CKT), we consider a system of right-and left-handed Weyl fermions out of thermal equilibrium in a homogeneous weak magnetic field. We show that the Lorentz invariance implies a modification in the definition of the momentum current in the phase space, compared to the case in which the system is in global equilibrium. Using this modified momentum current, we derive the linearized conservation equations from the kinetic equation up to second order in the derivative expansion. It turns out that the eigenmodes of these equations, namely the hydrodynamic modes, differ from those obtained from the hydrodynamic in the Landau-Lifshitz (LL) frame at the same order. We show that the modes of the former case may be transformed to the corresponding modes in the latter case by a global boost. The velocity of the boost is proportional to the magnetic field as well as the difference between the right-and left-handed charges susceptibility.We then compute the chiral transport coefficients in a system of non-Abelian chiral fermions in the no-drag frame and by making the above boost, obtain the well-known transport coeffiecients of the system in the LL frame. Finally by using the idea of boost, we reproduce the AdS/CFT result for the chiral drag force exerted on a quark at rest in the rest frame of the fluid, without performing any holographic computations.

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“…The first example of the new modes was developed in [4] for the chiral magnetic wave and later the similar chiral vortical wave has been found [5]. The mixing of these new modes as well as the modes emerging from the temperature gradients have been discussed in [7,8,14]. The most general pattern of the mixing considered so far has been analyzed in [10].…”

Section: Introductionmentioning

confidence: 99%