15 citations · 25 across the 4 of their papers we have counts for
9 papers
Proposed Fermi-surface reservoir-engineering and application to realizing unconventional Fermi superfluids
Taira Kawamura, Ryo Hanai, Yoji Ohashi
We theoretically propose an idea based on reservoir engineering to process the structure of a Fermi edge to split into multiple Fermi edges, so as to be suitable for the state whic…
Non-reciprocal phase transitions
Michel Fruchart, Ryo Hanai, Peter B. Littlewood +1
Out of equilibrium, the lack of reciprocity is the rule rather than the exception. Non-reciprocal interactions occur, for instance, in networks of neurons, directional growth of in…
Non-equilibrium strong-coupling theory for a driven-dissipative ultracold Fermi gas in the BCS-BEC crossover region
Taira Kawamura, Ryo Hanai, Daichi Kagamihara +2
We theoretically investigate strong-coupling properties of an ultracold Fermi gas in the BCS-BEC crossover regime in the non-equilibrium steady state, being coupled with two fermio…
Critical fluctuations at a many-body exceptional point
Ryo Hanai, Peter B. Littlewood
Critical phenomena arise ubiquitously in various context of physics, from condensed matter, high energy physics, cosmology, to biological systems, and consist of slow and long-dist…
Non-Hermitian phase transition from a polariton Bose-Einstein condensate to a photon laser
Ryo Hanai, Alexander Edelman, Yoji Ohashi +1
We propose a novel mechanism for a nonequilibrium phase transition in a -broken phase of an electron-hole-photon system, from a Bose-Einstein condensate of polaritons to a ph…
Photoluminescence and gain/absorption spectra of a driven-dissipative electron-hole-photon condensate
Ryo Hanai, Peter B. Littlewood, Yoji Ohashi
We investigate theoretically nonequilibrium effects on photoluminescence and gain/absorption spectra of a driven-dissipative exciton-polariton condensate, by employing the combined…