TY - JOUR
T1 - Soliton diffusion in a Bose-Einstein condensate
T2 - A signature of the analogue Hawking radiation
AU - Hang, Chao
AU - Gabadadze, Gregory
AU - Huang, Guoxiang
N1 - Publisher Copyright:
© 2019 The Authors
PY - 2019/6/10
Y1 - 2019/6/10
N2 - The analog Hawking radiation (HR) emanating from a sonic black hole horizon formed in a cigar-shaped Bose-Einstein condensate (BEC) at finite temperature is investigated. In particular, we study the effect of HR on a dark (topological) soliton. We show that, due to thermal fluctuations, the dark soliton in the BEC displays a nonlinear Brownian motion resulting in a specific asymmetric diffusion. Based on numerical simulations we argue that the analog HR formed in the BEC can be detected indirectly through measurement of the dark soliton diffusion.
AB - The analog Hawking radiation (HR) emanating from a sonic black hole horizon formed in a cigar-shaped Bose-Einstein condensate (BEC) at finite temperature is investigated. In particular, we study the effect of HR on a dark (topological) soliton. We show that, due to thermal fluctuations, the dark soliton in the BEC displays a nonlinear Brownian motion resulting in a specific asymmetric diffusion. Based on numerical simulations we argue that the analog HR formed in the BEC can be detected indirectly through measurement of the dark soliton diffusion.
KW - Analog Hawking radiation
KW - Bose-Einstein condensation
KW - Solitons
UR - https://www.scopus.com/pages/publications/85065549467
U2 - 10.1016/j.physletb.2019.04.008
DO - 10.1016/j.physletb.2019.04.008
M3 - 文章
AN - SCOPUS:85065549467
SN - 0370-2693
VL - 793
SP - 390
EP - 395
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
ER -