| CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES |
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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 |
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Abstract 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.
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Received: 06 November 2020
Revised: 22 December 2020
Accepted manuscript online: 04 January 2021
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PACS:
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67.85.-d
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(Ultracold gases, trapped gases)
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03.75.Hh
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(Static properties of condensates; thermodynamical, statistical, and structural properties)
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05.30.Jp
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(Boson systems)
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| Fund: Project 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), and the Science and Technology Commission of Shanghai Municipality, China (Grant No. 16DZ2260200). |
Corresponding Authors:
Jian-Song Pan, W Vincent Liu
E-mail: panjsong@gmail.com;wvliu@pitt.edu
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Cite this article:
Zehan Li(李泽汉), Jian-Song Pan, and W Vincent Liu Superfluid phases and excitations in a cold gas of d-wave interacting bosonic atoms and molecules 2021 Chin. Phys. B 30 066703
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