论文标题
berezinskii-kosterlitz-与狂犬耦合玻色子的无与伦比过渡
Berezinskii-Kosterlitz-Thouless phase transition with Rabi-coupled bosons
论文作者
论文摘要
从理论上讲，我们研究了在平衡密度下与狂犬病耦合的骨质原子的二元混合物中的超氟正常状态berezinskii-kosterlitz-无尽的过渡。我们发现过渡温度相对于集体耦合的非单调行为和跃迁温度的扩增，用于Rabi耦合的有限值，但对于小的小分量耦合。我们开发了两个组分玻色混合物中的尼尔森 - 科斯特利兹重统化组方程，并获得了由分数参数修改的尼尔森 - 科斯特利兹标准，该标准是由分数参数（负责半均能涡流的）和兔耦合的。采用重新归一化组方法，我们阐明了berezinskii-kosterlitz-thouless thertherthytertion Termantion温度对Rabi耦合和组合耦合的依赖性。对第一和第二声音速度的分析也揭示了在低温方向上以有限的狂犬病耦合的两种声音模式的抑制。我们的二维二元玻璃超级流体的结果有助于理解广泛的多组分量子系统，例如二维多型超导体。
We theoretically investigate the superfluid-normal-state Berezinskii-Kosterlitz-Thouless transition in a binary mixture of bosonic atoms with Rabi coupling under balanced densities. We find the nonmonotonic behavior of the transition temperature with respect to the intercomponent coupling and amplification of the transition temperature for finite values of Rabi coupling, but for small intracomponent couplings. We develop the Nelson-Kosterlitz renormalization-group equations in the two-component Bose mixture and obtain the Nelson-Kosterlitz criterion modified by a fractional parameter, which is responsible for half-integer vortices, and by Rabi coupling. Adopting the renormalization-group approach, we clarify the dependence of the Berezinskii-Kosterlitz-Thouless transition temperature on the Rabi coupling and the intercomponent coupling. Analysis of the first and second sound velocities also reveals the suppression of quasicrossing of the two sound modes with a finite Rabi coupling in the low-temperature regime. Our results for a two-dimensional binary Bose superfluid contribute to the understanding of a broad range of multicomponent quantum systems such as two-dimensional multiband superconductors.
