Gravitons show a helicity-dependent spin Hall effect from Berry curvature, producing an energy Hall current splitting exactly twice as large as the photon case.
Relativistic Chiral Kinetic Theory from Quantum Field Theories
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abstract
The chiral kinetic theory of Weyl fermions with collisions in the presence of weak electric and magnetic fields is derived from quantum field theories. It is found that the side-jump terms in the perturbative solution of Wigner functions play a significant role for the derivation. Moreover, such terms manifest the breaking of Lorentz symmetry for distribution functions. The Lorentz covariance of Wigner functions thus leads to modified Lorentz transformation associated with side-jump phenomena further influenced by background fields and collisions.
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The review summarizes developments in spin hydrodynamics, polarization from spin-vorticity coupling, pseudo-gauge freedom, and heavy-flavor spin dynamics in relativistic systems.
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Spin Hall effect and Berry curvature of gravitons from quantum field theory
Gravitons show a helicity-dependent spin Hall effect from Berry curvature, producing an energy Hall current splitting exactly twice as large as the photon case.
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Spin dynamics and polarization in relativistic systems: recent developments
The review summarizes developments in spin hydrodynamics, polarization from spin-vorticity coupling, pseudo-gauge freedom, and heavy-flavor spin dynamics in relativistic systems.