5 papers
Hartree shift and pairing gap in ultracold Fermi gases in the framework of low-momentum interactions
Michael Urban, S. Ramanan
In this paper we consider a two-component gas of fermions on the BCS side of the BCS-BEC crossover at zero temperature. We use a momentum dependent interaction that reproduces the…
Superfluid fraction in the crystal phase of the inner crust of neutron stars
Giorgio Almirante, Theodora Kaskitsi, Michael Urban
In the most extended layer of the inner crust of neutron stars, nuclear matter is believed to form a crystal of clusters immersed in a superfluid neutron gas. Here we analyze this…
Superfluid density in linear response theory : pulsar glitches from the inner crust of neutron stars
Giorgio Almirante, Michael Urban
The question of whether there are enough superfluid neutrons in the inner crust of neutron stars to explain pulsar glitches remains a topic of debate. Previous band structure calcu…
Superfluid fraction in the rod phase of the inner crust of neutron stars
Giorgio Almirante, Michael Urban
The rod phase as it is expected in the bottom layers of neutron-star crusts is analyzed within the Hartree-Fock-Bogoliubov framework. In order to well describe the interplay betwee…
Impact ionization induced by terahertz radiation in HgTe quantum wells of critical thickness
S. Hubmann, G. V. Budkin, M. Urban +9
We report on the observation of terahertz (THz) radiation induced band-to-band impact ionization in \HgTe quantum well (QW) structures of critical thickness, which are characterize…