论文标题
迪拉克费米斯的非热bcs-bec跨界
Non-Hermitian BCS-BEC crossover of Dirac fermions
论文作者
论文摘要
我们研究了手性对称性的破裂，其中具有复杂的耦合常数，其虚构部分代表耗散。我们引入了手性化学潜力，并观察到，对于实际耦合，相对论BCS-BEC交叉已实现。我们在平均场近似中求解模型，并构建相图作为复合耦合的函数。发现动态质量在耗散下增加，尽管如果耗散超过阈值，手性对称性会恢复。
We investigate chiral symmetry breaking in a model of Dirac fermions with a complexified coupling constant whose imaginary part represents dissipation. We introduce a chiral chemical potential and observe that for real coupling a relativistic BCS-BEC crossover is realized. We solve the model in the mean-field approximation and construct the phase diagram as a function of the complex coupling. It is found that the dynamical mass increases under dissipation, although the chiral symmetry gets restored if dissipation exceeds a threshold.
