Single-particle spectroscopies of p-wave and d-wave interacting Bose gases in normal phase

COMMUNICATIONS IN THEORETICAL PHYSICS(2024)

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摘要
Motivated by experiments with interacting quantum gases across high partial wave resonance, we investigate the thermodynamic properties and single-particle spectra of Bose gases in normal phase for different interaction strengths for both p- and d-wave interactions. The equation of state, contact density, momentum distributions and self-energies of single-particle Green's functions are obtained in the spirit of ladder diagram approximations. The radio-frequency (RF) spectrum, as an important experimental approach for detecting Feshbach molecules or the interaction effect, is calculated at different temperatures. A reversed temperature dependence on the Bose-Einstein condensation side and Bardeen-Cooper-Schrieffer side is identified for both p- and d-wave interactions. An estimate for the signal of RF spectra under typical experimental conditions is also provided.
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关键词
quantum gases,ultracold atom,high partial wave,RF spectra
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