6 citations · 6 across the 6 of their papers we have counts for
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Collective modes in non-Hermitian fermionic superfluids
Gabriel Angelo V. Vila, Kristian Hauser Villegas
The Higgs and Nambu-Goldstone modes are paradigmatic collective excitations in superconductors and superfluids. These modes are commonly analyzed within the pseudospin formulation…
Quantum geometric tensor in systems with fractional band dispersion
Jamme Omar A. Biscocho, Kristian Hauser A. Villegas
We investigate the quantum geometric tensor, which is comprised of the Berry curvature and quantum metric, in a generalized Dirac two-band system with non-integer dispersion $E(\ma…
Theory of pseudospin resonance for multiband superconductors
Kristian Hauser Villegas
We formulate a generalized pseudospin formalism for multiband superconductors in the presence of an external perturbing electromagnetic field. Our theory naturally captures the eff…
Theory of BCS-like bogolon-mediated superconductivity in transition metal dichalcogenides
Meng Sun, A. Parafilo, K. H. A. Villegas +2
We report on a novel mechanism of BCS-like superconductivity, mediated by a pair of Bogoliubov quasiparticles (bogolons). It takes place in hybrid systems consisting of a two-dimen…