In-medium Electromagnetic Form Factors and Spin Polarizations

Abstract

We formulate the coupling between fermion spin and background electromagnetic fields using form factors. We show that the vacuum form factors at tree level reproduce the spin polarization effects found in chiral kinetic theory. The vacuum form factors corresponding to spin couplings to perpendicular electric field, parallel and perpendicular magnetic field are degenerate. The degeneracy is expected to be lifted in medium. As an example, we calculate the in-medium QCD radiative correction to the form factors at one-loop order, where we find partial lift of the degeneracy: the spin couplings to parallel and perpendicular magnetic field are different, but the spin couplings to perpendicular electric and parallel magnetic field remain the same.

References in corpus (54)

• Quantum Spin Hall Effect in Graphene
• Global $\Lambda$ hyperon polarization in nuclear collisions: evidence for the most vortical fluid
• Globally Polarized Quark-gluon Plasma in Non-central A+A Collisions
• Relativistic distribution function for particles with spin at local thermodynamical equilibrium
• Forces inside hadrons: pressure, surface tension, mechanical radius, and all that
• Global hyperon polarization at local thermodynamic equilibrium with vorticity, magnetic field and feed-down
• Spin Alignment of Vector Mesons in Non-central A+A Collisions
• Chiral anomaly and local polarization effect from quantum kinetic approach
• Polarization of $\Lambda$ ($\bar{\Lambda }$) hyperons along the beam direction in Au+Au collisions at $\sqrt{s_{{}_{NN}}}$ = 200 GeV
• Lorentz Invariance in Chiral Kinetic Theory
• Collective longitudinal polarization in relativistic heavy-ion collisions at very high energy
• Global $\Lambda$ polarization in heavy-ion collisions from a transport model
• Kinetic theory for massive spin-1/2 particles from the Wigner-function formalism
• Shear-induced spin polarization in heavy-ion collisions
• Polarization of massive fermions in a vortical fluid
• Relativistic Chiral Kinetic Theory from Quantum Field Theories
• Local polarization and isothermal local equilibrium in relativistic heavy ion collisions
• Generating spin polarization from vorticity through nonlocal collisions
• Spin-thermal shear coupling in a relativistic fluid
• Thermal vorticity and spin polarization in heavy-ion collisions
• Nonlinear Responses of Chiral Fluids from Kinetic Theory
• Relativistic Quantum Kinetic Theory for Massive Fermions and Spin Effects
• Axial Kinetic Theory and Spin Transport for Fermions with Arbitrary Mass
• Spin polarization induced by the hydrodynamic gradients
• Heavy Quark Diffusion in Strong Magnetic Fields at Weak Coupling and Implications for Elliptic Flow
• Derivation of the nonlocal collision term in the relativistic Boltzmann equation for massive spin-1/2 particles from quantum field theory
• Local spin polarization in high energy heavy ion collisions
• From Kadanoff--Baym to Boltzmann equations for massive spin-1/2 fermions
• Reexamination of local spin polarization beyond global equilibrium in relativistic heavy ion collisions
• Effective quantum kinetic theory for spin transport of fermions with collsional effects
• A hydrodynamic study of hyperon spin polarization in relativistic heavy ion collisions
• Longitudinal Conductivity in Strong Magnetic Field in Perturbative QCD: Complete Leading Order
• Spin Polarizations in a Covariant Angular-Momentum-Conserved Chiral Transport Model
• Covariant Spin Kinetic Theory I: Collisionless Limit
• Leading Order Calculation of Shear Viscosity in Hot Quantum Electrodynamics from Diagrammatic Methods
• Bulk Viscosity of Quark-Gluon Plasma in Strong Magnetic Fields
• Foundations and Applications of Quantum Kinetic Theory
• Electric conductivity of hot and dense quark matter in a magnetic field with Landau level resummation via kinetic equations
• A microscopic description for polarization in particle scatterings
• Strong-Field Physics in QED and QCD: From Fundamentals to Applications
• Charge redistribution from anomalous magnetovorticity coupling
• Leading Order Calculation of Electric Conductivity in Hot Quantum Electrodynamics from Diagrammatic Methods
• Quantum Kinetic Theory for Quantum Electrodynamics
• Chiral kinetic theory from Landau level basis
• Wigner functions of massive fermions in strong magnetic fields
• Kinetic theory with spin: From massive to massless fermions
• Shear induced polarization: Collisional contributions
• Resummation for the Field-theoretical Derivation of the Negative Magnetoresistance
• Anomalous gravitomagnetic moment and non-universality of the axial vortical effect at finite temperature
• Photonic spin Hall effect from quantum kinetic theory in curved spacetime
• Magneto-vortical Effect in Strong Magnetic Field
• Dilepton Helical Production in a Vortical Quark-Gluon Plasma
• Electric and magnetic conductivities in magnetized fermion systems
• Thermodynamics of Chiral Fermion System in a Uniform Magnetic Field