Hydrodynamics of rotating superfluids. II. Finite temperature, dissipative theory

Journal Article · Wed Jan 01 04:00:00 EST 1986 · J. Low Temp. Phys.; (United States)

DOI:https://doi.org/10.1007/BF00681323· OSTI ID:6097052

Chandler, E; Baym, G

The hydrodynamics of rotating superfluids at finite temperature is formulated, accounting for the elastic properties of the vortex lattice. This theory, which is a generalization of previous work at zero temperature, includes normal fluid motions and dissipation and is used here to investigate the transverse and longitudinal normal modes of the system. Mutual friction, arising microscopically from collisions between the vortex lines and the excitations comprising the normal fluid, leads to a profound change in the nature of the two transverse modes allowed at finite temperatures. One such mode, similar to the Tkachenko mode in zero-temperature theory, is associated with the motion of the total mass current and is damped by first viscosity but unaffected by mutual friction. The other mode, associated with the relative motion of the normal and super-fluid-vortex components, is highly damped by mutual friction and cannot propagate at angles greater than a critical angle theta/sub c/ measured from the rotation axis.

• Research Organization: Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois
• OSTI ID: 6097052
• Journal Information: J. Low Temp. Phys.; (United States), Journal Name: J. Low Temp. Phys.; (United States) Vol. 62:1; ISSN JLTPA
• Country of Publication: United States
• Language: English

Related Subjects

640450* -- Fluid Physics-- Superfluidity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
EVEN-EVEN NUCLEI
FLUID FLOW
FLUID MECHANICS
FLUIDS
FRICTION
HELIUM 4
HELIUM II
HELIUM ISOTOPES
HYDRODYNAMICS
ISOTOPES
LIGHT NUCLEI
MECHANICS
MOTION
NUCLEI
QUANTUM FLUIDS
ROTATION
SOUND WAVES
STABLE ISOTOPES
SUPERFLUIDITY
TEMPERATURE DEPENDENCE
VORTEX FLOW