Interplay between Binary and Three-Body Interactions and Enhancement of Stability in Trapless Dipolar Bose–Einstein Condensates

Sabari Subramaniyan, Kishor Kumar Ramavarmaraja, Radha Ramaswamy*, Boris A. Malomed

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We investigate the nonlocal Gross–Pitaevskii (GP) equation with long-range dipole-dipole and contact interactions (including binary and three-body collisions). We address the impact of the three-body interaction on stabilizing trapless dipolar Bose–Einstein condensates (BECs). It is found that the dipolar BECs exhibit stability not only for the usual combination of attractive binary and repulsive three-body interactions, but also for the case when these terms have opposite signs. The trapless stability of the dipolar BECs may be further enhanced by time-periodic modulation of the three-body interaction imposed by means of Feshbach resonance. The results are produced analytically using the variational approach and confirmed by numerical simulations.

Original languageEnglish
Article number1135
JournalApplied Sciences (Switzerland)
Volume12
Issue number3
DOIs
StatePublished - 1 Feb 2022

Keywords

  • Bose–Einstein condensates
  • Crank–Nicolson method
  • Dipole-dipole interaction
  • Gross–Pitaevskii equation
  • Runge–Kutta method
  • Variational method

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