Spontaneous Parity--Time Symmetry Breaking and Stability of Solitons in Bose-Einstein Condensates

2010/09/21 by Zhenya Yan, Yan, Zhenya, Bo Xiong +3
Physics and Astronomy · #FOS: Physical sciences #Quantum Gases (cond-mat.quant-gas) #cond-mat.quant-gas

paper · pdf · doi:10.48550/arxiv.1009.4023

Submitted to Physical Review Letters on Sept. 13th 2010

arxiv created 2010/09/21 · arxiv updated 2010/09/22

Abstract

We report explicitly a novel family of exact PT-symmetric solitons and further study their spontaneous PT symmetry breaking, stabilities and collisions in Bose-Einstein condensates trapped in a PT-symmetric harmonic trap and a Hermite-Gaussian gain/loss potential. We observe the significant effects of mean-field interaction by modifying the threshold point of spontaneous PT symmetry breaking in Bose-Einstein condensates. Our scenario provides a promising approach to study PT-related universal behaviors in non-Hermitian quantum system based on the manipulation of gain/loss potential in Bose-Einstein condensates.

Related

• Can parity-time-symmetric potentials support continuous families of non-parity-time-symmetric solitons?
• Making the PT symmetry unbreakable
• Symmetry breaking in the collisions of double channel BEC solitons
• Solitary-waves of the Nonpolynomial Schrodinger Equation: Bright Solitons in Bose-Einstein Condensates
• Symmetric and asymmetric solitons trapped in H-shaped potentials