3 papers
gr-qc2026
Universal Relations for Neutron Stars from Asymptotic Analysis
Syo Kamata, Josuke Minamiguchi, Shuhei Minato
Dimensionless observables of neutron stars, such as the moment of inertia, the tidal deformability, the spin-induced quadrupole moment, and the compactness, satisfy the I--Love--Q…
hep-ph2025
In-in formalism with resummmation in a constant electric field: propagators including nontrivial boundary wavefunctions
Kenji Fukushima, Shuhei Minato
We present the derivation of an alternative representation of the real-time in-in formalism under a spatially homogeneous and time independent electric field. Because the system ex…
hep-ph2024
Speed of sound and trace anomaly in a unified treatment of the two-color diquark superfluid, the pion-condensed high-isospin matter, and the 2SC quark matter
Kenji Fukushima, Shuhei Minato
In a unified perturbative treatment from the high-density side, we compute the speed of sound and the trace anomaly as functions of the chemical potential for the two-color diq…