2025/11/18 by Guo, Yixin
#FOS: Physical sciences #Nuclear Theory (nucl-th) #Quantum Gases (cond-mat.quant-gas) #Strongly Correlated Electrons (cond-mat.str-el) #Superconductivity (cond-mat.supr-con)
paper · doi:10.48550/arxiv.2511.14211
We consider the mass-imbalance effect on the clustering in a one-dimensional two-component Fermi gas with coexistent even- and odd-wave interactions resulting in different configurations of clustering phases. We obtain the solutions of both stable two- and three-body cluster states with different mass ratios and configurations by solving the corresponding variational equations. We feature out phase diagrams consisting of the s- and p-wave pairing phases, and tripling phase with different configurations, in a plane of s- and p-wave pairing strengths. As for the in-vacuum case, the three-body clustering is always the lowest-lying phase. While for the in-medium case, the Cooper tripling phase dominates over the pairing phases when both s- and p-wave interactions are moderately strong. There is also a competition between different clustering configurations of three-body clustering.