Abstract

The postulates of the eigenstate thermalization hypothesis (ETH) expresses that the thermalization occurs due to the individual eigenstate of the system’s Hamiltonian. But the ETH sheds no light on the dynamics that lead toward the thermalization. In this paper, we observe the thermalization of a Bose–Einstein condensate (BEC) confined in an optical lattice potential that is embedded on the harmonic trap. Such optical lattice potential offers local friction to the oscillating BEC. The spread in the temporal density plot of BEC shows the thermalization of the BEC. Moreover, we observe that the presence of a parity–time (PT)-symmetric potential greatly influences the BEC dynamics and the thermalization of the system. The presence of a PT-symmetric potential offers a way to manipulate the mean position of the BEC to a desired location and for a desired length of time.

© 2021 Optical Society of America

Chaotic dynamics of an atomic Bose–Einstein condensate in a frequency-modulated cavity QED

Ebrahim Ghasemian and Mohammad Kazem Tavassoly
J. Opt. Soc. Am. B 38(11) 3385-3394 (2021)

Dynamical generation of dark solitons in spin-orbit-coupled Bose–Einstein condensates

Shuai Cao, Chuan-Jia Shan, Dan-Wei Zhang, Xizhou Qin, and Jun Xu
J. Opt. Soc. Am. B 32(2) 201-209 (2015)

Dynamics of two coupled Bose-Einstein Condensate solitons in an optical lattice

Yongshan Cheng, Rongzhou Gong, and Hong Li
Opt. Express 14(8) 3594-3601 (2006)

Experimental study of tune-out wavelengths for spin-dependent optical lattice in ⁸⁷Rb Bose–Einstein condensation

Kai Wen, Zengming Meng, Liangwei Wang, Liangchao Chen, Lianghui Huang, Pengjun Wang, and Jing Zhang
J. Opt. Soc. Am. B 38(11) 3269-3276 (2021)

Production of ²³Na Bose–Einstein condensates in the F = 2 state using D₂ gray molasses

Zhenlian Shi, Ziliang Li, Pengjun Wang, Khan Sadiq Nawaz, Liangchao Chen, Zengming Meng, Lianghui Huang, and Jing Zhang
J. Opt. Soc. Am. B 38(4) 1229-1234 (2021)