Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The University of TokyoJP429 papers
- Kyoto UniversityJP151 papers
- RIKENJP142 papers
- Tokyo Institute of TechnologyJP134 papers
- High Energy Accelerator Research OrganizationJP100 papers
- Tohoku UniversityJP100 papers
- Nagoya UniversityJP97 papers
- The University of OsakaJP96 papers
- Tokyo University of ScienceJP90 papers
- Japan Science and Technology AgencyJP68 papers
- UNSW SydneyAU63 papers
- Centre National de la Recherche ScientifiqueFR62 papers
13 papers · 2 filters
Uniform spin susceptibility and spin-gap phenomenon in the BCS-BEC crossover regime of an ultracold Fermi gas
H. Tajima, T. Kashimura, R. Hanai +2
We investigate the uniform spin susceptibility in the BCS (Bardeen-Cooper-Schrieffer)-BEC (Bose-Einstein condensation) crossover regime of an ultracold Fermi gas. Inclu…
Pseudogap phenomenon and effects of population imbalance in the normal state of a unitary Fermi gas
Takashi Kashimura, Ryota Watanabe, Yoji Ohashi
We investigate strong-coupling corrections to single-particle excitations in the normal state of a spin-polarized unitary Fermi gas. Within the framework of an extended T-matrix ap…
Excitation properties and effects of mass imbalance in the BCS-BEC crossover regime of an ultracold Fermi gas
Ryo Hanai, Takashi Kashimura, Ryota Watanabe +2
We investigate single-particle properties of a mass-imbalanced Fermi gas in the BCS (Bardeen-Cooper-Schrieffer)-BEC (Bose-Einstein condensation) crossover region. In the presence o…
Comparative studies of many-body corrections to an interacting Bose condensate
Shohei Watabe, Yoji Ohashi
We compare many-body theories describing fluctuation corrections to the mean-field theory in a weakly interacting Bose-condensed gas. Using a generalized random-phase approximation…
Low-dimensional pairing fluctuations and pseudogapped photoemission spectrum in a trapped two-dimensional Fermi gas
Ryota Watanabe, Shunji Tsuchiya, Yoji Ohashi
We investigate strong-coupling properties of a trapped two-dimensional normal Fermi gas. Within the framework of a combined -matrix theory with the local density approximation,…
Vortex molecules in Bose-Einstein condensates
Muneto Nitta, Minoru Eto, Mattia Cipriani
Stable vortex dimers are known to exist in coherently coupled two component Bose-Einstein condensates (BECs). We construct stable vortex trimers in three component BECs and find th…
Strong-Coupling Effects and Single-Particle Properties in an Ultracold Fermi Gas with Mass Imbalance
Ryo Hanai, Yoji Ohashi
We investigate single-particle properties of a strongly interacting ultracold Fermi gas with mass imbalance. Using an extended -matrix theory, we calculate the density of states…
Vortex polygons and their stabilities in Bose-Einstein condensates and field theory
Michikazu Kobayashi, Muneto Nitta
We study vortex polygons and their stabilities in miscible two-component Bose-Einstein condensates, and find that vortex polygons are stable for the total circulation , m…
Spin Susceptibility and Strong Coupling Effects in an Ultracold Fermi Gas
Hiroyuki Tajima, Ryo Hanai, Ryota Watanabe +1
We investigate magnetic properties and strong coupling corrections in the BCS (Bardeen-Cooper-Schrieffer)-BEC (Bose-Einstein condensation) crossover regime of an ultracold Fermi ga…
Integrable model for density-modulated quantum condensates: solitons passing through a soliton lattice
Daisuke A. Takahashi
An integrable model possessing inhomogeneous ground states is proposed as an effective model of non-uniform quantum condensates such as supersolids and Fulde--Ferrell--Larkin--Ovch…
Vortex lattices in three-component Bose-Einstein condensates under rotation: simulating colorful vortex lattices in a color superconductor
Mattia Cipriani, Muneto Nitta
We study vortex lattices in three-component BECs under rotation, where three kinds of fractional vortices winding one of three components are present. Unlike the cases of two-compo…
Wall-vortex composite solitons in two-component Bose-Einstein condensates
Kenichi Kasamatsu, Hiromitsu Takeuchi, Makoto Tsubota +1
We study composite solitons, consisting of domain walls and vortex lines attaching to the walls in two-component Bose-Einstein condensates. When the total density of two components…
Crossover between integer and fractional vortex lattices in coherently coupled two-component Bose-Einstein condensates
Mattia Cipriani, Muneto Nitta
We study effects of the internal coherent (Rabi) coupling in vortex lattices in two-component BECs under rotation. We find how the vortex lattices without the Rabi coupling known b…