Leggett’s bounds or how to quantify superfluidity
1. Superfluid fraction in an interacting spatially modulated Bose-Einstein condensate Authors: R G. Chauveau, C. Maury, F. Rabec, C. Heintze, G. Brochier, S. Nascimbene, J. Dalibard, J. Beugnon, S. M. Roccuzzo, and S. Stringari Phys. Rev. Lett. 130, 226003 (2023); DOI: 10.1103/PhysRevLett.130.226003 arXiv:2302.01776; DOI: 10.48550/arXiv.2302.01776 2. Observation of anisotropic superfluid density in an artificial crystal […]