Many-body structure of quantum vortices in thin 4He films

doi:10.1016/0375-9601(95)00319-X

Physics Letters A

Volume 202, Issue 4, 26 June 1995, Pages 317-323

https://doi.org/10.1016/0375-9601(95)00319-X Get rights and content

Abstract

We propose a microscopic theory of quantum vortices in two-dimensional ⁴He, applicable to thin superfluid ⁴He films. The theory describes the vortex core and reproduces the classical logarithmic behavior at large distances. The single vortex is treated as a quasiparticle. We calculate the energy needed to create a single vortex, the vortex inertial mass, the microscopic interaction between vortices and the binding energy of the vortex-antivortex pair as a function of density at zero temperature. At ⁴He densities less than 0.037 Å⁻² the binding energy of the vortex-antivortex pair becomes negative, indicating an instability for the creation of a novel state.

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Condensed matterMany-body structure of quantum vortices in thin 4He films

Abstract

Phys. Lett. A

Phys. Rep.

Sov. Phys. JETP

J. Phys. C

Progr. Low Temp. Phys.

Phys. Rev. B

Quantized vortices in helium II

Phys. Rev.

Phys. Rev. B

Philos. Trans. R. Soc. A

Phys. Rev. Lett.

Phys. Rev. Lett.

Condensed matter
Many-body structure of quantum vortices in thin ⁴He films