Equations of two-fluid hydrodynamics in the Hubbard model |
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Authors: | R?O?Za?tsev |
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Institution: | 1.Moscow Institute of Physics and Technology,Dolgoprudny?, Moscow oblast,Russia |
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Abstract: | A set of equations is obtained using stationary and nonstationary superconductivity theories in terms of the Hubbard model.
The equations near T
c
and for a weak magnetic field have the general form of superconductivity equations with a strongly anisotropic Fermi surface.
Calculations are performed using a kinetic equation for quasiparticles. The low-temperature collective excitations in a superconductor
are studied. An explicit relationship for the temperature dependence of second sound is obtained. |
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Keywords: | |
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