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.