2 papers
cond-mat.other2014
Universality of phonon-roton spectrum in liquids and superfluidity of He II
V. B. Bobrov, S. A. Trigger, D. I. Litinski
Based on numerous experimental data on inelastic neutron and X-ray scattering in liquids, we assert that the phonon-roton spectrum of elementary excitations, predicted by Landau fo…
cond-mat.stat-mech2013
Universality of rotons in liquids, generalized superfluidity criterion and helons in helium II
V. B. Bobrov, S. A. Trigger
An analysis of experimental data shows that, in addition to phonon--roton excitations in superfluid helium, there necessarily exist at least one branch of elementary excitations wh…