Speaker
Description
In the last two years, exciting progresses on Bose-Einstein condensations (BEC) of molecules with bosonic atoms have been made. The Chicago group led by Chin has reported the achievement of the BEC of the G-wave Feshbach Cs molecules [1], and its ``super-chemistry”[2]. The Columbia group led by Will has created an ultra-cold gas of Na-Cs ground state molecules closed to BEC [3]. In this talk, I shall discuss the phase coherences of different classes of molecular condensates (Ref[1]-[3]) and their experimental consequences -- connection to super-chemistry [2], the longtime issues of half-vortices, and the intrinsic angular momentum in condensed matters, Ref [4].
References:
[1] Zhang, Z, Chen L., Yao, K,-X. & Chin, C. Transition from an atomic to a molecular Bose-Einstein condensate. Nature 708-711 (2021)
[2] Zhengdong Zhang, Shu Nagata, Kaixuan Yao, Cheng Chin, Many-boy Chemical Reaction in a Quantum Degenerate Gas, arXiv:2207.08295v2
[3] Ian Stevenson, Aden Z. Lam, Niccolò Bigagli, Claire Warner, Weijun Yuan, Siwei Zhang, and Sebastian Will, Ultracold Gas of Dipolar NaCs Ground State Molecules, arXiv: 2206.00652v1
[4] Tin-Lun Ho, The Bose-Einstein Condensate of; G-wave Molecules and Its Intrinsic Angular Momentum, arXiv:2101.054321v1.
