14 citations · 35 across the 10 of their papers we have counts for
11 papers
Microscopic Insights into the Quarkyonic Hadron--Quark Crossover: Lessons from Ultracold Fermi Gases
Hiroyuki Tajima
In neutron-star and dense quantum chromodynamics (QCD) physics, it is important to understand how baryonic matter evolves into quark matter at high density. A continuous hadron--qu…
Microscopic Realization of Topologically Quantized Alignment in Fast-Rotating Nuclei
Ganlong Ding, Sibo Wang, Hiroyuki Tajima +3
We present the first quantitative microscopic realization of topologically quantized alignment in a finite nuclear system. The realization is obtained by exact diagonalization of a…
Emergent Weyl Nodes and Berry Curvature in Bose Polarons via -Wave Feshbach Coupling
Hiroyuki Tajima, Eiji Nakano, Kei Iida
We show that an impurity quasiparticle immersed in a Bose-Einstein condensate, known as a Bose polaron, exhibits topological properties characterized by a nonzero Berry curvature,…
Quarkyonic matter and hadron-quark crossover from an ultracold atom perspective
Hiroyuki Tajima, Kei Iida, Toru Kojo +1
The dense matter equation of state is of great interest due to the recent development of astrophysical observations for neutron stars. A rapid increase in pressure indicates a cont…
Tunable Fujita-Miyazawa-Type Three-Body Force in Ultracold Atoms
Hiroyuki Tajima, Eiji Nakano, Kei Iida
We show how a Fujita-Miyazawa-type three-body force emerges among three impurity atoms immersed in an atomic Bose-Einstein condensate near an interspecies Feshbach resonance. As a…
Quartet correlations near the surface of nuclei
Yixin Guo, Tomoya Naito, Hiroyuki Tajima +1
We theoretically investigate Cooper quartet correlations in doubly-magic nuclei (, , and ). We firs…
Tripling Fluctuations and Peaked Sound Speed in Fermionic Matter
Hiroyuki Tajima, Kei Iida, Toru Kojo +1
A crossover involving three-fermion clusters is relevant to the hadron-quark crossover, which, if occurring in a neutron star, could naturally reproduce the dense-matter equation o…
Polaronic neutron in dilute alpha matter: A -wave Bose polaron
Hiroyuki Tajima, Hajime Moriya, Tomoya Naito +3
We theoretically investigate quasiparticle properties of a neutron immersed in an alpha condensate, which is one of the possible states of dilute symmetric nuclear matter. The reso…
Non-relativistic trace anomaly and equation of state in dense fermionic matter
Hiroyuki Tajima, Kei Iida, Haozhao Liang
We theoretically investigate a non-relativistic trace anomaly and its impact on the low-temperature equation of state in spatially one-dimensional three-component fermionic systems…
Intersections of ultracold atomic polarons and nuclear clusters: How is a chart of nuclides modified in dilute neutron matter?
Hiroyuki Tajima, Hajime Moriya, Wataru Horiuchi +2
Neutron star observations, as well as experiments on neutron-rich nuclei, used to motivate one to look at degenerate nuclear matter from its extreme, namely, pure neutron matter. A…
Structure of two- and three-alpha systems in cold neutron matter
H. Moriya, H. Tajima, W. Horiuchi +2
We present stability and structure of two- and three-alpha systems embedded in dilute cold neutron matter. By solving a few-alpha Schrödinger equation with quasiparticle properties…