123 citations · 1k across the 70 of their papers we have counts for
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Are Quasiparticles and Phonons Identical in Bose--Einstein Condensates?
Kazumasa Tsutsui, Yusuke Kato, Takafumi Kita
We study an interacting spinless Bose-Einstein condensate to clarify theoretically whether the spectra of its quasiparticles (one-particle excitations) and collective modes (two-pa…
Emergence of Non-Axisymmetric Vortex in Strong-Coupling Chiral p-Wave Superconductor
Noriyuki Kurosawa, Yusuke Kato
We studied strong-coupling effect upon an isolated vortex in a two-dimensional chiral p-wave superconductor. We solved the Eilenberger equation for the quasiclassical Green's funct…
Perturbative Approach to Superfluidity under Nonuniform Potential
Shinji Koshida, Yusuke Kato
A perturbative way to investigate superfluid properties of various systems under nonuniform potential is presented. We derive the perturbation expansion of the superfluid fraction,…
Coherence Effects of Caroli-de Gennes-Matricon Modes in Nodal Topological Superconductors
Yasumasa Tsutsumi, Yusuke Kato
Coherence effects by the impurity scattering of Caroli--de Gennes--Matricon (CdGM) modes in a vortex for nodal topological superconductors have been studied. The coherence effects…