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September 5, 2025Proceedings of the National Academy of Sciences0 citationsOpen Access

Vacuum Tunneling of Vortices in Two-Dimensional Superfluid 4 He Films

Vacuum tunneling of vortices in two-dimensional 4 He superfluid films

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Authors

MDMichael J. DesrochersDMD. J. J. MarchandPSP. C. E. Stamp

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Overview

This research demonstrates tunneling of vortices in superfluid 4 He films, suggesting implications for quantum phase transitions.

Key Points

  • Vacuum tunneling processes were expected in superfluid 4 He films at low temperatures, revealing insights into vortex behavior.
  • The calculated tunneling rate for the intrinsic processes indicates a quantum phase transition at T = 0 due to an external supercurrent.
  • Extrinsic and intrinsic processes of vortex nucleation were distinguished, highlighting the influence of effective vortex mass on tunneling.
  • The study presents a novel approach for experimental testing through a specific vortex counting technique.

Cite This Study

Desrochers et al. (2025) studied this question.

synapsesocial.com/papers/68bb5f7a6d6d5674bcd03ac8https://doi.org/10.1073/pnas.2421273122
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