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Signatures of Nontrivial Pairing in the Quantum Walk of Two-Component Bosons.

Authors :
Giri MK
Mondal S
Das BP
Mishra T
Source :
Physical review letters [Phys Rev Lett] 2022 Jul 29; Vol. 129 (5), pp. 050601.
Publication Year :
2022

Abstract

Nearest neighbor bosons possessing only on-site interactions do not form on-site bound pairs in their quantum walk due to fermionization. We obtain signatures of nontrivial on-site pairing in the quantum walk of strongly interacting two component bosons in a one dimensional lattice. By considering an initial state with particles from different components located at the nearest-neighbor sites in the central region of the lattice, we show that in the dynamical evolution of the system, competing intra- and intercomponent on-site repulsion leads to the formation of on-site intercomponent bound states. We find that when the total number of particles is three, an intercomponent pair is favored in the limit of equal intra- and intercomponent interaction strengths. However, when two bosons from each species are considered, intercomponent pairs and trimer are favored depending on the ratios of the intra- and intercomponent interactions. In both cases, we find that the quantum walks exhibit a reentrant behavior as a function of intercomponent interaction.

Details

Language :
English
ISSN :
1079-7114
Volume :
129
Issue :
5
Database :
MEDLINE
Journal :
Physical review letters
Publication Type :
Academic Journal
Accession number :
35960573
Full Text :
https://doi.org/10.1103/PhysRevLett.129.050601