Side-jump induced spin-orbit interaction of chiral fluids from kinetic theory

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We apply the Wigner-function approach and chiral kinetic theory to investigate the angular momentum and polarization of chiral fluids composed of Weyl fermions with background electric/magnetic fields and vorticity. It is found that the quantum corrections in Wigner functions give rise to nonzero antisymmetric components in the canonical energy-momentum tensors, which are responsible for the spin-orbit interaction. In global equilibrium, conservation of the canonical angular momentum reveals the cancellation between the orbital component stemming from side jumps with nonzero vorticity and the spin component in the presence of an axial chemical potential. We further analyze the conservation laws near local equilibrium. It turns out that the canonical angular momentum is no longer conserved even in the absence of background fields due to the presence of a local torque coming from the spin-orbit interaction involving temperature/chemical-potential gradients, which is implicitly led by collisions.

Original languageEnglish
Article number076019
JournalPhysical Review D
Volume98
Issue number7
DOIs
Publication statusPublished - 2018 Oct 1
Externally publishedYes

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kinetic theory
spin-orbit interactions
angular momentum
vorticity
fluids
potential gradients
conservation laws
cancellation
torque
conservation
fermions
kinetic energy
tensors
orbitals
collisions
polarization
magnetic fields
temperature

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Side-jump induced spin-orbit interaction of chiral fluids from kinetic theory. / Yang, Di-Lun.

In: Physical Review D, Vol. 98, No. 7, 076019, 01.10.2018.

Research output: Contribution to journalArticle

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