Journal of Physical Studies 3(2), 147–156 (1999)
DOI: https://doi.org/10.30970/jps.03.147

THE RELATIVISTIC THEORY OF SUPERFLUIDITY FOR A SYSTEM WITH TWO TYPES OF CONDENSATES TAKING INTO ACCOUNT THE EFFECT OF MUTUAL DRAG

S. Vilchynskyy
Faculty of Physics, Taras Shevchenko Kyiv University,
Kyiv, 252172, Ukraine
E–mail: sivil@ap3.bitp.kiev.ua

The phenomenological derivation of equations of relativistic superfluidity theory for systems with two types of condensates is given. The effect of mutual dragging of superfluid components is considered as a consequence of interaction of condensates treated as quantum scalar fields. Thermodynamics identities for the pressure, energy and expression for the energy–momentum tensor are found. The limit of low velocities is considered. Dissipative terms in the hydrodynamics equations and proper vibrations of the vortex lattice are considered.

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