Chiral magnetic waves in strongly coupled Weyl semimetals

Abstract

Propagating chiral magnetic waves (CMW) are expected to exist in chiral plasmas due to the interplay between the chiral magnetic and chiral separation effects induced by the presence of a chiral anomaly. Unfortunately, it was pointed out that, because of the effects of electric conductivity and dissipation, CMW are overdamped and therefore their signatures are unlikely to be seen in heavy-ion collision experiments and in the quark gluon plasma. Nonetheless, the chiral anomaly plays a fundamental role in Weyl semimetals and their anomalous transport properties as well. Hence, CMW could be potentially observed in topological semimetals using table-top experiments. By using a holographic model for strongly coupled Weyl semimetals, we investigate in detail the nature of CMW in presence of Coulomb interactions and axial charge relaxation and estimate whether, and in which regimes, CMW could be observed as underdamped collective excitations in topological materials.

39 pages, 11 figures, published version

References in corpus (19)

• The Chiral Magnetic Effect
• Chiral Magnetic Wave
• Negative longitudinal magnetoresistance in Dirac and Weyl metals
• Boundary Conditions and Dualities: Vector Fields in AdS/CFT
• Topological Mott insulator in three-dimensional systems with quadratic band touching
• Emergence and evolution of $k$-gap in spectra of liquid and supercritical states
• Weyl fermions with arbitrary monopole in magnetic fields: Landau levels, longitudinal magnetotransport, and density-wave ordering
• Chiral effects in astrophysics and cosmology
• Anomalous Magneto Response and the Stückelberg Axion in Holography
• Phase diagram of electronic systems with quadratic Fermi nodes in $2<d<4$: $2+\epsilon$ expansion, $4-\epsilon$ expansion, and functional renormalization group
• Colloquium: Hydrodynamics and holography of charge density wave phases
• Holography and magnetohydrodynamics with dynamical gauge fields
• Charge-dependent anisotropic flow studies and the search for the Chiral Magnetic Wave in ALICE
• U(1) quasi-hydrodynamics: Schwinger-Keldysh effective field theory and holography
• Collective dynamics and the Anderson-Higgs mechanism in a bona fide holographic superconductor
• Relaxation terms for anomalous hydrodynamic transport in Weyl semimetals from kinetic theory
• Real-time dynamics of axial charge and chiral magnetic current in a non-Abelian expanding plasma
• Spacetime dynamics of chiral magnetic currents in a hot non-Abelian plasma
• Chiral asteroseismology: seismic oscillations caused by chiral transport in neutron stars and supernovae

Cited by in corpus (6)

• Chiral Anomalous Magnetohydrodynamics in action: effective field theory and holography
• Coexistence of topological semimetal states in holography
• Vortical waves in a quantum fluid with vector, axial and helical charges. II. Dissipative effects
• Efficiency of dynamos from an autonomous generation of chiral asymmetry
• Scheme dependence and instability of double-trace deformations for gauge fields in AdS${}_5$
• Nonequilibrium steady states in driven holographic Weyl semi-metals