https://doi.org/10.1140/epjb/s10051-022-00399-6
Regular Article – Statistical and Nonlinear Physics
Bose–Einstein condensation in one-dimensional systems with short-range correlated disordered on-site potentials
1
Department of Physics and Institute of Theoretical Physics, Nanjing Normal University, 210023, Nanjing, People’s Republic of China
2
Jiangsu Key Laboratory for Numerical Simulation of Large Scale Complex Systems, Nanjing Normal University, 210023, Nanjing, People’s Republic of China
3
Nanjing Normal University Taizhou College, 225300, Taizhou, People’s Republic of China
Received:
8
June
2022
Accepted:
10
August
2022
Published online:
26
August
2022
We study Bose–Einstein condensation (BEC) in one-dimensional tight-binding systems with two kinds of short-range correlated disordered on-site energy sequences (OSESs). One is the chaotic sequence generated by the modified Bernoulli map, the other is the random-dimer sequence. For these two kinds of short-range correlated systems, we consider binary and non-binary versions of sequences. It is found that BEC can occur in these systems at finite temperature and their transition temperatures (
) increase with the potential strength w. Moreover, the of the systems with non-binary OSESs are greater than those of the binary ones. And the 
increases with the correlation parameter B (
) for the chaotic system. Compared with the uncorrelated disordered system, the introduction of correlation decreases the for the chaotic binary system, while for the non-binary system that increases the in the 
region and decreases it in the remaining short-range correlated regions. The results for the random-dimer system are similar to those for the chaotic system in the region.
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