Possibilities for experimental observation of dynamical quasicondensation in sudden expansion of hard-core bosons on optical lattices

Recent experiments with ultracold atomic gases give access to the studies of transport properties of interacting particles in optical lattices [1,2]. Sudden expansion of strongly interacting bosons and fermions exhibits rich phenomena [3]. For instance, it was shown experimentally that hard-core bosons expand ballistically in one dimension [2], in agreement with exact numerical studies. Nevertheless, dynamical quasicondensation of hard-core bosons [4] remains a challenge for experimentalist. We discuss the possibility how the quasicondensation of expanding bosons could be observed in realistic experimental conditions.\\[4pt] [1] Schneider et al. Nature Physics 8, 213 (2012).\\[0pt] [2] Ronzheimer et al., Phys. Rev. Lett. 110, 205301 (2013).\\[0pt] [3] Vidmar et al., Phys. Rev. B 88, 235117 (2013).\\[0pt] [4] Rigol and Muramatsu, Phys. Rev. Lett. 93, 230404 (2004).