11 citations · 105 across the 19 of their papers we have counts for
19 papers
Medium-induced bosonic clusters in a Bose-Fermi mixture: Towards simulating cluster formations in neutron-rich matter
Yixin Guo, Hiroyuki Tajima
Considering bosonic atoms immersed in a dilute Fermi gas, we theoretically investigate medium-induced bosonic clusters associated with fermion-mediated two- and three-body interact…
Cooper pairing and tripling in one-dimensional spinless fermions with attractive two- and three-body forces
Yixin Guo, Hiroyuki Tajima
We theoretically investigate in-medium three-body correlations in one-dimensional spinless fermions with antisymmetrized two- and three-body attractive interactions. By investigati…
Finite-range effect in the two-dimensional density-induced BCS-BEC crossover
Hikaru Sakakibara, Hiroyuki Tajima, Haozhao Liang
We theoretically investigate the Bardeen-Cooper-Schrieffer (BCS) to Bose-Einstein condensation (BEC) crossover in a two-dimensional Fermi gas with the finite-range interaction by u…
Spin transport between polarized Fermi gases near the ferromagnetic phase transition
Tingyu Zhang, Daigo Oue, Hiroyuki Tajima +2
We theoretically study the spin current between two polarized Fermi gases with repulsive interactions near the itinerant ferromagnetic phase transition. We consider a two-terminal…
Exploring Superfluid in Dilute Spin-Polarized Neutron Matter
Hiroyuki Tajima, Hiroshi Funaki, Yuta Sekino +2
We explore the theoretical possibility of neutron superfluid in dilute spin-polarized neutron matter, which may be relevant to the crust region of a magnetized neutron star…
Polaronic Proton and Diproton Clustering in Neutron-Rich Matter
Hiroyuki Tajima, Hajime Moriya, Wataru Horiuchi +2
We show that strong spin-triplet neutron-proton interaction causes polaronic protons to occur in neutron matter at subnuclear densities and nonzero temperature. As the neutron dens…
BCS-BCS crossover between atomic and molecular superfluids in a Bose-Fermi mixture
Yixin Guo, Hiroyuki Tajima, Tetsuo Hatsuda +1
We theoretically examine a continuity between atomic and molecular Fermi superfluids in a Bose-Fermi mixture near the Feshbach resonance. Considering a two-channel model describing…
Brueckner -matrix approach to two-dimensional Fermi gases with the finite-range attractive interaction
Hikaru Sakakibara, Hiroyuki Tajima, Haozhao Liang
Two-dimensional spin-1/2 fermions with the finite-range interaction are theoretically studied. Characterizing the attractive interaction in terms of the scattering length and the e…
Density-Induced Hadron-Quark Crossover via the Formation of Cooper Triples
Hiroyuki Tajima, Shoichiro Tsutsui, Takahiro M. Doi +1
We discuss the hadron--quark crossover accompanied by the formation of Cooper triples (three-body counterpart of Cooper pairs) by analogy with the Bose--Einstein condensate to Bard…
Competition between pairing and tripling in one-dimensional fermions with coexistent s- and p-wave interactions
Yixin Guo, Hiroyuki Tajima
We theoretically investigate in-medium two- and three-body correlations in one-dimensional two-component Fermi gases with coexistent even-parity s-wave and odd-parity p-wave intera…
Stability against three-body clustering in one-dimensional spinless p-wave fermions
Yixin Guo, Hiroyuki Tajima
We theoretically investigate in-medium two- and three-body correlations in one-dimensional spinless fermions with attractive two-body p-wave interaction. By investigating the varia…
Resonance-to-bound transition of He in neutron matter and its analogy with heteronuclear Feshbach molecule
Hiroyuki Tajima, Hajime Moriya, Wataru Horiuchi +2
We theoretically investigate the fate of a neutron-alpha -wave resonance in dilute neutron matter, which may be encountered in neutron stars and supernova explosions. While …
Possible condensation of Cooper triples
Sora Akagami, Hiroyuki Tajima, Kei Iida
We theoretically discuss the possible condensation of Cooper triples, which correspond to a three-body version of Cooper pairs, in three-component Fermi systems with three-body att…
Role of the effective range in the density-induced BEC-BCS crossover
Hiroyuki Tajima, Haozhao Liang
We elucidate the role of the effective range in the Bose-Einstein-condensate (BEC) to Bardeen-Cooper-Schrieffer (BCS) crossover regime of two-component fermions in three dimensions…
Isothermal compressibility and effects of multi-body molecular interactions in a strongly interacting ultracold Fermi gas
Daichi Kagamihara, Ryohei Sato, Koki Manabe +2
We theoretically investigate the isothermal compressibility in the normal state of an ultracold Fermi gas. Including pairing fluctuations, as well as preformed-pair formati…
Dominant Andreev Reflection through Nonlinear Radio-Frequency Transport
Tingyu Zhang, Hiroyuki Tajima, Yuta Sekino +2
We theoretically propose the laser-induced Andreev reflection between two-component Fermi superfluid and normal states via spatially-uniform Rabi couplings. By analyzing the tunnel…
Nonequilibrium noise as a probe of pair-tunneling transport in the BCS--BEC Crossover
Hiroyuki Tajima, Daigo Oue, Mamoru Matsuo +1
The detection of elementary carriers in transport phenomena is one of the most important keys to understand non-trivial properties of strongly-correlated quantum matter. Here we pr…
Multi-Particle Tunneling Transport at Strongly-Correlated Interfaces
Hiroyuki Tajima, Daigo Oue, Mamoru Matsuo
We elucidate the multi-particle transport of pair- and spin-tunnelings in strongly correlated interfaces. Not only usual single-particle tunneling but also interaction-induced mult…
Development of a measurement system enabling the reconstruction of gamma-ray time spectra by simultaneous recording of energy and time information
Hiroyuki Tajima, Shinji Kitao, Ryo Masuda +4
We developed a measurement system that enables the reconstruction of γ-ray time spectra in cascade decay schemes. As this system records all the time and energy information of γ-ra…