中国物理B ›› 2021, Vol. 30 ›› Issue (6): 66703-066703.doi: 10.1088/1674-1056/abd7d7
Superfluid phases and excitations in a cold gas of d-wave interacting bosonic atoms and molecules
Zehan Li(李泽汉)1, Jian-Song Pan2,†, and W Vincent Liu1,2,‡
- 1 Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USA;
2 Wilczek Quantum Center, School of Physics and Astronomy and T. D. Lee Institute, Shanghai Jiao Tong University, Shanghai 200240, China
Superfluid phases and excitations in a cold gas of d-wave interacting bosonic atoms and molecules
Zehan Li(李泽汉)1, Jian-Song Pan2,†, and W Vincent Liu1,2,‡
- 1 Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260, USA;
2 Wilczek Quantum Center, School of Physics and Astronomy and T. D. Lee Institute, Shanghai Jiao Tong University, Shanghai 200240, China
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.
中图分类号: (Ultracold gases, trapped gases)
- 67.85.-d