Thermal-induced Local Imbalance in Repulsive Binary Bose Mixtures
| Autor: | Pascual, Gerard, Spada, Gabriele, Pilati, Sebastiano, Giorgini, Stefano, Boronat, Jordi |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Phys. Rev. Research 5, L032041 (2023) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevResearch.5.L032041 |
| Popis: | We study repulsive two-component Bose mixtures with equal populations and confined in a finite-size box through path-integral Monte Carlo simulations. For different values of the $s$-wave scattering length of the interspecies potential, we calculate the local population imbalance in a region of fixed volume inside the box at different temperatures. We find two different behaviors: for phase-separated states at $T=0$, thermal effects induce a diffusion process which reduces the local imbalance whereas, for miscible states at $T=0$, a maximum in the local population imbalance appears at a certain temperature, below the critical one. We show that this intriguing behavior is strongly related to the bunching effect associated with the Bose-Einstein statistics of the particles in the mixture and to an unexpected behavior of the cross pair distribution function not reported before. Comment: 7 pages, 7 figures |
| Databáze: | arXiv |
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