Entropy- and Flow- Induced Superfluid States

Abstract

Normally the role of phase fluctuations in superfluids and superconductors is to drive a phase transition to the normal state. This happens due to proliferation of topologically nontrivial phase fluctuations in the form of vortices. Here we discuss a class of systems where, by contrast, nontopological phase fluctuations can produce superfluidity. Here we understand superfluidity as a phenomenon that does not necessarily arises from a broken $U(1)$ symmetry, but can be associated with a certain class of (approximate or exact) degeneracies of the systems energy landscape giving raise to a $U(1)$-like phase.

5 pages and 2 figures

References in corpus (3)

• A superconductor to superfluid phase transition in liquid metallic hydrogen
• Limits of the upper critical field in dirty two-gap superconductors
• Role of Bose Statistics in Crystallization and Quantum Jamming

Cited by in corpus (2)

• Ground state, collective mode, phase soliton and vortex in multiband superconductors
• Spontaneous Breakdown of Time-Reversal Symmetry Induced by Thermal Fluctuations