Information Entropy Dynamics in Spin-1 Dipolar Bose-Einstein Condensates
Information entropy is an important topic due to its relevance to cold atom system. Motivated by the recent work in a scalar dipolar Bose-Einstein condensates (BECs), we extend this issue to the dynamics of information entropy in spin-1 dipolar BECs. Our results show that the periodicity of Sr, Sk and S is broken in the presence of magnetic dipole-dipole interactions (MDDIs). With the increase of dipole strength, the total entropy S and momentum component Sk increase, wile Sr decreases. This is completely opposite with scalar dipolar BECs. In particular, the order parameter δ decay quickly with stronger dipolar interaction, showing that the increase of dipole strength makes the system become more and more disordered.
KeywordsInformation entropy Dipole-dipole interaction Spinor Bose-Einstein condensates
Q. Z. would like to express sincere thanks to Prof. Wenxian Zhang and all the members of his group during the stay in Wuhan University. This work is supported by the Applied Basic Research programs of Tangshan (Grant No. 18130219a).