Phase transition of Bose—Einstein condensate under decoherence

Abstract

The effect of decoherence on the phase transition of a Bose-Einstein condensate in a symmetric double-well potential is determined by the mean atom number difference. It still has two phases, the tunneling phase and the self-trapping phase, even under decoherence. The density matrix and the operator fidelity also show very different behaviors in the two phases. This suggests that operator fidelity can be used to characterize the phase transition of this Bose-Einstein condensate model, even under decoherence.

Application of Information Technology in Land field

“…In China, supervision on land use change information has undergone three major stages: manual study, aerial photography assisted supervision and dynamic supervision dominated by remote-sensing data. Remote-sensing has been widely applied in land use supervision studies, with sophisticated process generated [16,17,18,19,20]. Combination of GIS and remote-sensing technology is an effective way to realize the monitoring application system of land use and coverage [18,19,20].…”

“…Remote-sensing has been widely applied in land use supervision studies, with sophisticated process generated [16,17,18,19,20]. Combination of GIS and remote-sensing technology is an effective way to realize the monitoring application system of land use and coverage [18,19,20]. First, the precision of classification can be improved by using remote-sensing information to assist the interpretation of land use type supported by GIS fundamental database.…”

“…Second, the present advantage of GIS can be maintained by using the latest information on land use extracted by remote-sensing data extraction to complement and update GIS database. Third, functions like GIS space overlapping analyzing can be used to conduct dynamic analysis at various stages to supervise the change in land use and assist in land use decision-making [19]. The present stage features key technology study and application.…”

Topological phase transitions driven by next-nearest-neighbor hopping in noncentrosymmetric cold Fermi gases

“…Topological phases and topological phase transitions are two of the most active research areas in physics. [1][2][3][4][5] These topological states, which have a full gap in the bulk and topologically protected gapless states on the boundary, [6][7][8][9] are usually characterized by some global topological quantum numbers, such as the Thouless-Kohmoto-Nightingale-Nijs (TKNN) number. [10] The topological order supports the existence of chiral Majorana edge modes, and the vortices with Majorana fermion modes are neither fermions nor bosons but non-Abelian anyons, which obey the non-Abelian statistics.…”