Breathing mode in two-dimensional binary self-bound Bose-gas droplets

P. Stürmer, M. Nilsson Tengstrand, R. Sachdeva, S. M. Reimann

Research output: Contribution to journalArticlepeer-review

Abstract

In this work, we study the stationary structures and the breathing mode behavior of a two-dimensional self-bound binary Bose droplet. We employ an analytical approach using a variational ansatz with a super-Gaussian trial order parameter and compare it with the numerical solutions of the extended Gross-Pitaevskii equation. We find that the super-Gaussian is superior to the often used Gaussian ansatz in describing the stationary and dynamical properties of the system. For sufficiently large nonrotating droplets the breathing mode is energetically favorable compared to the self-evaporating process. However, for small self-bound systems our results differ based on the ansatz. Inducing angular momentum by imprinting multiply quantized vortices at the droplet center, this preference for the breathing mode persists independent of the norm.

Original languageEnglish
Article number053302
JournalPhysical Review A
Volume103
Issue number5
DOIs
Publication statusPublished - 2021 May

Subject classification (UKÄ)

  • Condensed Matter Physics

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