A holographic superfluid symphony

A bstract We study the hydrodynamic excitations of backreacted holographic superfluids by computing full set quasinormal modes (QNMs) at finite momentum and matching them to existing theory superfluids. Additionally, we analyze behavior low-energy in real frequency complex momentum, going beyond standard QNM picture. Finally, carry out a novel type model support across phase diagram. achieve this determining corresponding QNMs on different operators dual theory, both space. From support, are able reconstruct dispersion relations using constitutive relations. Our analysis rules role-reversal phenomenon between first second sound model, contrary results obtained weakly coupled field framework.