Some mechanisms of "spontaneous" polarization of superfluid He-4

Abstract

Previously, a quantum "tidal" mechanism of polarization of the atoms of He-II was proposed, according to which, as a result of interatomic interaction, each atom of He-II acquires small fluctuating dipole and multipole moments, oriented chaotically on the average. In this work, we show that, in the presence of a temperature or density gradient in He-II, the originally chaotically oriented tidal dipole moments of the atoms become partially ordered, which results in volume polarization of He-II. It is found that the gravitational field of the Earth induces electric induction U =10(-7)V in He-II (for vessel dimensions of the order of 10 cm). We study also the connection of polarization and acceleration, and discuss a possible nature of the electric signal dU = kdT/2e observed by A.S. Rybalko in experiments with second sound.

arXiv comment13 pages; the calculation is extended and refined; v4: reconstruction

Cited by in corpus (5)

• To the theory of the electric activity of He II induced by waves of first and second sounds
• A Study of the Electric Response of He II at the Excitation of Second Sound Waves
• Polarization Effects in Superfluid ${}^4$He
• Acoustic modes in He I and He II in the presence of an alternating electric field
• Electric field and electric forces in a spontaneously polarized nonpolar isotropic dielectric