Magneto-thermal transport implies an incoherent Hall conductivity
Andrea Amoretti, Daniel K. Brattan, Nicodemo Magnoli, Marcello Scanavino
Abstract
A bstract We consider magnetohydrodynamics with an external magnetic field. We find that in general one must allow for a non-zero incoherent Hall conductivity to correctly describe the DC longitudinal and Hall thermal conductivities beyond order zero in the magnetic field expansion. We apply our result to the dyonic black hole, determining the incoherent Hall conductivity in that case, and additionally prove that the existence of this transport coefficient leads to a significantly better match between the hydrodynamic and AC thermo-electric correlators.
Topics & Concepts
PhysicsCondensed matter physicsHall effectHall conductivityThermal Hall effectMagnetic fieldThermal conductivityConductivityMagnetohydrodynamicsField (mathematics)Kubo formulaOrder (exchange)Thermal conductionQuantum electrodynamicsZero (linguistics)Electrical resistivity and conductivityThermalCurrent (fluid)First orderLongitudinal fieldAstrophysical Phenomena and ObservationsBlack Holes and Theoretical PhysicsPulsars and Gravitational Waves Research