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Scanning SQUID Study of Vortex Manipulation by Local Contact

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Tricritical Physics in Two-Dimensional p-Wave Superfluids.

Fan Yang¹, Shao-Jian Jiang², Fei Zhou¹

¹Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, British Columbia, V6T 1Z1, Canada.

Physical Review Letters

|June 23, 2020

Summary

This summary is machine-generated.

Strong quantum fluctuations cause phase transitions in 2D superfluids to become first-order, leading to self-contraction. This occurs between two tricritical points near resonance, especially with strong coupling.

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Area of Science:

Condensed Matter Physics
Quantum Fluids
Superfluidity

Background:

Standard models describe continuous phase transitions between superfluids and vacuum.
Quantum fluctuations can significantly alter phase transition behavior.

Purpose of the Study:

Investigate the impact of quantum fluctuations on two-dimensional (2D) p+ip superfluids near resonance.
Determine the nature of phase transitions under strong quantum fluctuation conditions.

Main Methods:

Theoretical analysis of quantum fluctuations in 2D p+ip superfluids.
Identification of tricritical points and phase transition orders.

Main Results:

Continuous phase transitions terminate at two tricritical points near resonance.
A substantial window for first-order phase transitions exists with strong coupling.
Superfluids exhibit self-contraction near first-order transitions due to phase separation.

Conclusions:

Quantum fluctuations fundamentally change the nature of phase transitions in 2D superfluids.
First-order transitions and self-contraction are significant phenomena near resonance under strong coupling.