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Generating transverse response explicitly from harmonic oscillators
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DOI：10.1103/PhysRevB.96.134414.png)
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摘要
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We obtain stochastic dynamics from a system-plus-bath mechanism as an extension of the Caldeira-Leggett (CL) model in the classical regime. An effective magnetic field and response functions with both longitudinal and transverse parts are exactly generated from the bath of harmonic oscillators. The effective magnetic field and transverse response are antisymmetric matrices: the former is explicitly time-independent corresponding to the geometric magnetism, while the latter can have memory. The present model can be reduced to previous representative examples of stochastic dynamics describing nonequilibrium processes. Our results demonstrate that a system coupled with a bath of harmonic oscillators is a general approach to studying stochastic dynamics, and provides a method to experimentally implement an effectivemagnetic field from coupling to the environment.
Keyword:
GEOMETRIC MAGNETISM
ANOMALOUS DIFFUSION
QUANTUM
PHASE
THERMODYNAMICS
LOCALIZATION
DISSIPATION
DYNAMICS
FRAMEWORK
VORTEX
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期刊
IF:
3.7
论文数:
15.4W
被引数:
41.0W
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