Radio-frequency spectroscopy of polarons in ultracold Bose gases
Radio-frequency spectroscopy of polarons in ultracold Bose gases
Recent experimental advances enabled the realization of mobile impurities immersed in a Bose-Einstein condensate (BEC) of ultracold atoms. Here we consider impurities with two or more internal hyperfine states, and study their radio-frequency (RF) absorption spectra, which correspond to transitions between two different hyperfine states. We calculate RF spectra for …