Superfluid phases and excitations in a cold gas of d-wave interacting bosonic atoms and molecules

• 作者: Zehan Li Jian-Song Pan W Vincent Liu
• 来源期刊: 中国物理B（英文版）
• 年，卷（期）: 2021,（6）
• 所属期刊栏目: CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES
• 页码范围: 526-532
• 页数: 7页
• 语种: 英文
• DOI: 10.1088/1674-1056/abd7d7

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.