Spin hydrodynamic equations with external disturbances and suitable Green's functions for superfluid3He-B. New onsager relations |
| |
Authors: | Z M Galasiewicz |
| |
Affiliation: | (1) Institute of Theoretical Physics, University of Wrocaw, Institute of Low Temperatures and Structure Research of the Polish Academy of Sciences, Wrocaw, Poland;(2) Brookhaven National Laboratory, Upton, New York |
| |
Abstract: | The spin hydrodynamic equations for superfluid3He-B have been obtained for the case of external, time-dependent fields. On the basis of a microscopic approach, expressions are found for additional terms in equations containing these fields. Considering the linear response of the system to the switching on of external fields, formulas are found for suitable Green's functions (magnetization-magnetization, rotation-rotation, magnetization-rotation, rotation-magnetization). The rotation-rotation Green's function has the 1/q
2 singularity characteristic of superfluid systems. Connections between Green's functions lead to relations among kinetic coefficients v, 1, and 2. It is also shown that there is a conserved quantityQ
(B) = div v
s
(B)
that describes sources or magnetic type charges (monopoles) of the superfluid velocity v
s
(B)
. Comparison with the phenomenological approach suggests thatQ
(B) is proportional to a pseudoscalar giving the projection of the spin density onto the vector describing the axis of rotation. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|