49 citations · 331 across the 20 of their papers we have counts for
22 papers
Constraining the interaction with terrestrial and astronomical data
Yusuke Tanimura, Chang Ho Hyun, Myung-Ki Cheoun
Terrestrial double- hypernuclear data and astronomical observations of neutron stars provide complementary constraints on the interaction. In this work, we investigate the…
Non-radial oscillations of hadronic neutron stars, quark stars, and hybrid stars : Calculation of , , and mode frequencies
Atanu Guha, Debashree Sen, Chang Ho Hyun
The composition and equation of state (EoS) of dense matter relevant to compact stars are quite inconclusive. However, certain observational constraints on the structural propertie…
Neutrino-Deuteron Reactions at Solar Neutrino Energies in Pionless Effective Field Theory with Dibaryon Fields
Shung-Ichi Ando, Young-Ho Song, Chang Ho Hyun
We study breakup of the deuteron induced by neutrinos in the neutral , and the charged , processes. Pionless eff…
Spin polarization observables of the deuteron photodisintegration at low energies in pionless effective field theory
Young-Ho Song, Shung-Ichi Ando, Chang Ho Hyun
Spin polarization observables of the deuteron photodisintegration at low energies are studied in a pionless effective field theory up to next-to-next-to-leading order (NNLO). The t…
Strangeness in Neutron Star Cooling
Yeunhwan Lim, Chang Ho Hyun, Chang-Hwan Lee
We study the thermal evolution of neutron stars in the presence of hyperons or kaons in the core. Our results indicate that the nucleon and hyperon direct Urca processes play cruci…
Parity-violating coupling constant from the flavor-conserving effective weak chiral Lagrangian
Chang Ho Hyun, Hyun-Chul Kim, Hee-Jung Lee
We investigate the parity-violating pion-nucleon-nucleon coupling constant , based on the chiral quark-soliton model. We employ an effective weak Hamiltonian that takes…
Density dependence of the nuclear energy-density functional
Panagiota Papakonstantinou, Tae-Sun Park, Yeunhwan Lim +1
The explicit density (rho) dependence in the coupling coefficients of the non-relativistic nuclear energy-density functional (EDF) encodes effects of three-nucleon forces and dynam…
Nuclear isospin asymmetry in decays of heavy nuclei
Eunkyoung Shin, Yeunhwan Lim, Chang Ho Hyun +1
The effects of nuclear isospin asymmetry on decay lifetimes of heavy nuclei are investigated within various phenomenological models of nuclear potential for the particle. W…
New Photodisintegration Model of GEANT4 for the Reaction with a Dibaryon Effective Field Theory
Jae Won Shin, Chang Ho Hyun
We develop a new hadronic model for GEANT4 that is specialized for the disintegration of the deuteron by photons, . For the description of two-nucleon interactions, we e…
Nuclear Equation of State and Neutron Star Cooling
Yeunhwan Lim, Chang Ho Hyun, Chang-Hwan Lee
We investigate the cooling of neutron stars with relativistic and non-relativistic models of dense nuclear matter. We focus on the effects of uncertainties originated from the nucl…
Hyperon Puzzle of Neutron Stars with Skyrme Force Models
Yeunhwan Lim, Chang Ho Hyun, Kyujin Kwak +1
We consider the so called hyperon puzzle of neutron star (NS). We employ Skyrme force models for the description of in-medium nucleon-nucleon, nucleon-Lambda hyperon (), and La…
Kaon Condensation in Neutron Stars with Skyrme-Hartree-Fock Models
Yeunhwan Lim, Kyujin Kwak, Chang Ho Hyun +1
We investigate nuclear matter equations of state in neutron star with kaon condensation. It is generally known that the existence of kaons in neutron star makes the equation of sta…
Parity-violating coupling constant in the chiral quark-soliton model
Hee-Jung Lee, Chang Ho Hyun, Hyun-Chul Kim
We investigate the parity-violating Yukawa coupling constant within the framework of the SU(2) chiral quark-soliton model, based on the effective weak Lagr…
Effective range corrections from effective field theory with di-baryon fields and perturbative pions
Shung-Ichi Ando, Chang Ho Hyun
Contributions of perturbative pions around a non-trivial fixed point are studied by utilizing di-baryon fields. We calculate and phase shifts for the scatt…
Hyperon and nuclear symmetry energy in the neutron star
Chung-Yeol Ryu, Chang Ho Hyun, Chang-Hwan Lee
In this work, masses and radii of neutron stars are considered to investigate the effect of nuclear symmetry energy to the astrophysical observables. A relativistic mean field mode…
Hadronic weak interaction in the two-nucleon system with effective field theories
Shung-ichi Ando, Chang Ho Hyun, Jae Won Shin
Weak interactions in two-nucleon system at low energies are explored in the framework of effective field theory. We review our recent calculations of parity-violating observables i…
Neutron Stars with Bose-Einstein Condensation of Antikaons as MIT Bags
C. Y. Ryu, C. H. Hyun, S. W. Hong
We investigate the properties of an antikaon in medium, regarding itas a MIT bag. We first construct the MIT bag model for a kaon with and in order to describe the interac…
Parity-violating polarization in with a pionless effective field theory
J. W. Shin, S. Ando, C. H. Hyun
We consider the two-nucleon weak interaction with a pionless effective field theory. Dibaryon fields are introduced to facilitate calculations and ensure precision in the initial a…
Parity violation in with pionless effective theory
C. H. Hyun, J. W. Shin, S. Ando
We consider a pionless effective theory with dibaryon fields for the description of the weak process involving two nucleons. We construct leading order Lagrangians that contain nuc…
The Anapole Moment of the Deuteron with the Argonne v18 Nucleon-Nucleon Interaction Model
Chang Ho Hyun, Bertrand Desplanques
We calculate the deuteron anapole moment with the wave functions obtained from the Argonne nucleon-nucleon interaction model. The anapole moment operators are considered at t…
Asymmetry in
Chang Ho Hyun, Tae-Sun Park, Dong-Pil Min
Heavy-baryon chiral perturbation theory (HBChPT) is applied to the asymmetry in at threshold, which arises due to the weak parity non-conserving inter…
A Higher-Order Calculation of Scattering in Cut-Off Effective Field Theory
C. H. Hyun, T. -S. Park, D. -P. Min
We report a next-to-leading-order (NLO) chiral perturbation theory calculation of the neutron-proton scattering cross section in the channel using a cut-off regularizatio…