摘要
Motivated by recent advances in orbitally tuned Feshbach resonance experiments, we analyze the ground-state phase diagram and related low-energy excitation spectra of a d-wave interacting Bose gas. A two-channel model with d-wave symmetric interactions and background s-wave interactions is adopted to characterize the gas. The ground state is found to have three interesting superfluid phases: atomic, molecular, and atomic–molecular. In great contrast to what was previously known about the p-wave case, the atomic superfluid is found to be momentum-independent for the d-wave case discussed here. The Bogoliubov spectra above each superfluid phase are obtained both analytically and numerically.
作者
Zehan Li
Jian-Song Pan
W Vincent Liu
李泽汉;Jian-Song Pan;W Vincent Liu(Department of Physics and Astronomy,University of Pittsburgh,Pittsburgh,PA 15260,USA;Wilczek Quantum Center,School of Physics and Astronomy and T.D.Lee Institute,Shanghai Jiao Tong University,Shanghai 200240,China)
基金
supported by the AFOSR (Grant No. FA9550-16-1-0006)
the MURI-ARO (Grant No. W911NF17-1-0323)
the National Natural Science Foundation of China (Grant Nos. 11904228, 11804221, and 11655002)
the National Postdoctoral Program for Innovative Talents of China (Grant No. BX201700156)
the Science and Technology Commission of Shanghai Municipality,China (Grant No. 16DZ2260200)。
