Dissipative dynamics of vortex lines in superfluid He-4

Article

关键词: FEYNMAN WAVE-FUNCTION;    QUANTIZED VORTICES;    MOVING SINGULARITY;    INERTIAL MASS;    HELIUM-II;    FRICTION;    SYSTEMS;   

DOI  :  10.1103/PhysRevB.55.3792

来源: SCIE

【 摘 要 】

We propose a Hamiltonian model that describes the interaction between a vortex line in superfluid He-4 and the gas of elementary excitations. An equation of irreversible motion for the density operator of the vortex, regarded as a macroscopic quantum particle with a finite mass, is derived in the frame of generalized master equations. This enables us to cast the effect of the coupling as a drag force with one reactive and one dissipative component, in agreement with the assumption of the phenomenological theories of vortex mutual friction in the two fluid model.

【 授权许可】

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