5 citations · 5 across the 15 of their papers we have counts for
17 papers
Microscopic description of spin distributions in multinucleon tranfer reactions
Kotaro Koga, Kazuyuki Sekizawa
Background: The generation of spin distributions in fission fragments has attracted substantial interest in recent years and its mechanism is becoming clear alongside the refined d…
Microscopic Investigation of Clustering for the Decay Based on the Density-Constrained Frozen Hartree-Fock Calculations
Shu Yamamura, Kazuyuki Sekizawa
The inter-nucleus potential between an particle and a daughter nucleus (Sn) is calculated based on the density-constraint frozen Hartree-Fock (DCFHF) method with a Skyr…
Neural-Network-Based Variational Method in Nuclear Density Functional Theory: Application to the Kohn--Sham method
Kenta Yoshimura, Kazuyuki Sekizawa
We extend the neural-network-based variational method for nuclear density functional theory to the Kohn--Sham scheme, representing the complex spinor components of the single-parti…
Effects of Differential Rotation on the Maximum Mass of Neutron Stars
Hyukjin Kwon, Jinho Kim, Kazuyuki Sekizawa
The maximum mass of neutron stars provides a key constraint on the equation of state (EoS) of dense matter. Recent observations, including the pulsar PSR~J07…
Three-dimensional orbital-free density functional theory description of nuclear pasta in the inner crust of neutron stars
Yo Nakamura, Kazuyuki Sekizawa
Background: In the bottom layer of the inner crust of neutron stars, various crystalline structures are expected to emerge that are collectively called ``nuclear pasta.'' It is des…
Impact of hyperon mixing on neutron star structure based on Skyrme-type equations of state: Systematic analysis of and three-body forces with Bayesisan inference
Taeho Lee, Yoonhak Nam, Kazuyuki Sekizawa
We study hyperonic density-dependent three-body effects in cold neutron-star matter using a Skyrme energy-density-functional framework. In beta-equilibrated matter, the eff…
Formation of bound composite vortices of a singly-quantized S vortex and half-quantized P vortices in the S-P coexisting phase in neutron stars
Tatsuhiro Hattori, Muneto Nitta, Kazuyuki Sekizawa
Pulsar glitches are believed to originate from the dynamics of quantized vortices in the neutron superfluid interior. The outer core of a neutron star hosts a spin-t…
Superfluid Band Theory for the Rod Phase in the Magnetized Inner Crust Matter: Entrainment, Spin-orbit Coupling, Spin-triplet Pairing
Kenta Yoshimura, Kazuyuki Sekizawa
The inner crust of neutron stars hosts a rich variety of nuclear phenomena and provides a unique environment for exploring microscopic nuclear properties relevant to diverse astrop…
Exploring Interplays Between Neutron Superfluid Vortices and Proton Fluxtubes in the Outer Core of Neutron Stars
Tatsuhiro Hattori, Kazuyuki Sekizawa
In the outer core of neutron stars, P superfluid neutrons and S superconducting protons are deemed to exist, forming quantum vortices and magnetic fluxtubes, respec…
Constraining of Nuclear Matter Equations of State With Rotating Neutron Stars
Hyukjin Kwon, Kazuyuki Sekizawa
Neutron stars can be regarded as natural laboratories that enable us to investigate nuclear matter properties under extreme conditions that are otherwise impossible to access in te…
Vortex creep heating in neutron star cooling with direct Urca processes in heavy neutron stars
Yoonhak Nam, Kazuyuki Sekizawa
Old, thermally bright neutron stars imply internal heating at late times. Among candidate mechanisms, vortex creep heating (VCH) provides a robust link between spin-down and fricti…
Accuracy and Applicability of the Hartle-Thorne and Komatsu-Eriguchi-Hachisu Methods for Modeling Rotating Neutron Stars
Hyukjin Kwon, Kenta Yoshimura, Tsuyoshi Miyatsu +2
Neutron stars, which are composed of extremely dense nuclear matter, serve as natural laboratories to study nuclear interactions beyond the terrestrial experiments. Recent research…
Vortex Creep Heating in Neutron Star Cooling: New Insights into Thermal Evolution of Heavy Neutron Stars
Yoonhak Nam, Kazuyuki Sekizawa
Neutron stars provide unique laboratories for probing physics of dense nuclear matter under extreme conditions. Their thermal and luminosity evolution reflects key internal propert…
Paths to Superheavy Nuclei
K. Godbey, F. M. Nunes, M. Albertsson +16
This document summarizes the discussions and outcomes of the Facility for Rare Isotope Beams Theory Alliance (FRIB-TA) topical program "The path to Superheavy Isotopes" held in Jun…
Data-driven exploration of the neutron pairing gap using Cassiopeia A neutron star observational data: Direct minimization
Yoonhak Nam, Kazuyuki Sekizawa
The rapid cooling observed in the Cassiopeia~A neutron star (Cas~A NS) is one of the most stringent tests for neutron-star cooling theory. While Cooper-pair breaking and formation…
Fully general relativistic description of rapidly-rotating axially-symmetric neutron stars for constraining nuclear matter equations of state
Hyukjin Kwon, Kazuyuki Sekizawa
Background: Constraining the nuclear matter equation of state (EoS) from neutron star observations is one of the main subjects in nuclear physics today. In general, neutron stars r…
Time-dependent random phase approximation for particle-number fluctuations and correlations in deep-inelastic collisions of Sm+Sm and Sm+Sm
Zepeng Gao, Kazuyuki Sekizawa, Long Zhu
The fluctuation-dissipation mechanism underlying non-equilibrium transport in low-energy heavy-ion reactions remains unclear. Although the time-dependent Hartree-Fock (TDHF) method…