English
Related papers

Related papers: Implications of {\sigma}-cut potential on Antikaon…

200 papers

This study investigates the effects of strong magnetic fields on antikaon condensation in neutron star matter using the extended FSUGold model model. It is found that the presence of strong magnetic fields alters the threshold density of…

Nuclear Theory · Physics 2025-10-21 Fei Wu , Chen Wu

Motivated by the recent observation of high-mass pulsars ($M \simeq 2 M_{\odot}$), we employ the $\sigma$-cut potential on the equation of state (EOS) of high-density matter and the properties of neutron stars within the relativistic…

Nuclear Theory · Physics 2022-11-22 N. K. Patra , B. K. Sharma , A. Reghunath , A. K. H. Das , T. K. Jha

We study the impact of additional couplings in the relativistic mean field (RMF) models, in conjunction with antikaon condensation, on various neutron star properties. We analyze different properties such as in-medium antikaon and nucleon…

Nuclear Theory · Physics 2013-04-09 Neha Gupta , P. Arumugam

We investigate the role of higher order couplings, along with the condensation of antikaons ($K^-$ and $\bar K^0$), on the properties of neutron star (NS). We employ extended versions of the relativistic mean-field model, in which…

Nuclear Theory · Physics 2013-02-08 Neha Gupta , P. Arumugam

Antikaon ($K^-$) condensation within neutron star matter (NS) depends on the antikaon-nucleon interaction potential ($U_K$). Appearance of $K^-$ generally softens the equation of state (EOS). The impact of this softening on the structure of…

Nuclear Theory · Physics 2025-09-22 Debanjan Guha Roy , Sarmistha Banik

Radial oscillations provide a direct probe of the stability and compressibility of neutron stars and are highly sensitive to the equation of state of dense matter. In this work, we investigate the impact of antikaon condensates on the…

Nuclear Theory · Physics 2026-01-29 Manisha Kumari , Sujan Kumar Roy , Soumen Podder , Suman Pal , Gargi Chaudhuri

We have considered the antikaon condensation in a neutron star in the presence of strong magnetic fields by using the modified quark-meson coupling (MQMC) model. The structure of the neutron star is investigated with various magnetic fields…

High Energy Physics - Phenomenology · Physics 2012-02-14 C. Y. Ryu , S. W. Hong

Analyses of comprehensive sets of strong-interaction data consisting of level shifts, widths and yields in strange atoms of K mesons and Sigma hyperons are reviewed. The introduction of density dependent optical potentials, in both cases,…

Nuclear Theory · Physics 2008-07-16 E. Friedman , A. Gal

In this work, we study the properties of neutron stars using the linear Relativistic Mean-Field (RMF) theory and consider multiple degrees of freedom inside neutron stars, including hyperons and $\Delta$ resonances. We investigate different…

Nuclear Theory · Physics 2025-10-17 Chen Wu , Wenjun Guo

In this paper, we employ the Density Dependent Relativistic Hadron (DDRH) field theoretical Model in a Bayesian analysis to investigate the equation of state (EOS) of dense matter featuring antikaon condensation for $K^-$ and $\bar{K}^0$…

High Energy Astrophysical Phenomena · Physics 2024-10-18 Vishal Parmar , Vivek Baruah Thapa , Anil Kumar , Debades Bandyopadhyay , Monika Sinha

We investigate the condensation of charged $K^-$ meson and neutral $\bar K^0$ meson in dense neutron star matter. Calculations are performed in relativistic mean field models in which both the baryon-baryon and (anti)kaon-baryon…

Astrophysics · Physics 2009-10-31 Subrata Pal , Debades Bandyopadhyay , Walter Greiner

The recent measurement of the mass of neutron stars (PSR J1614 - 2230, PSR J0348 + 0432, MSP J0740 + 6620) restricts the lower limit $\sim 2M_{\odot}$ of the maximum mass of such compact stars, making it possible for dense matter to exist…

Nuclear Theory · Physics 2022-02-08 Fu Ma , Wenjun Guo , Chen Wu

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$\sigma^*$ and $\phi$ in order to describe the interaction of$s$-quarks in hyperonic matter in the…

Nuclear Theory · Physics 2010-04-30 C. Y. Ryu , C. H. Hyun , S. W. Hong

We study the effects of strong magnetic fields on antikaon condensation in neutron star matter using the quark-meson coupling (QMC) model. The QMC model describes a nuclear many-body system as nonoverlapping MIT bags in which quarks…

Nuclear Theory · Physics 2008-11-26 P. Yue , H. Shen

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 state soft so that the maximum mass of neutron star is not…

Nuclear Theory · Physics 2015-06-18 Yeunhwan Lim , Kyujin Kwak , Chang Ho Hyun , Chang-Hwan Lee

The equation of state (EOS) for neutron stars is modeled using the Relativistic Mean Field (RMF) approach with a mesonic nonlinear (NL) interaction, a modified sigma cut potential (NL-$\sigma$ cut), and the influences of dark matter in the…

Nuclear Theory · Physics 2025-05-21 Prashant Thakur , Tuhin Malik , Arpan Das , T. K. Jha , B. K. Sharma , Constança Providência

The existence of high mass ($\sim 2M_{\odot}$) pulsars PSR J1614-2230 and PSR J0348-0432 requires the compact star matter to be described by a stiff equation of state (EoS). Presence of hyperons in neutron stars leads to a softening of the…

High Energy Astrophysical Phenomena · Physics 2018-01-03 Hovik Grigorian , Evgeni E. Kolomeitsev , Konstantin A. Maslov , Dmitry N. Voskresensky

Recent measurements of neutron star mass from several candidates (PSR J$1614-2230$, PSR J$0348+0432$, MSP J$0740+6620$) set the lower bound on the maximum possible mass for this class of compact objects $\sim 2$ M$_\odot$. Existence of…

High Energy Astrophysical Phenomena · Physics 2020-12-04 Vivek Baruah Thapa , Monika Sinha

The properties of strangeness neutron star are studied within relativistic mean-field (RMF) model via including a logarithmic interaction as a function of scalar meson field. This logarithmic interaction, named as the $\sigma$-cut…

Nuclear Theory · Physics 2018-02-07 Ying Zhang , Jinniu Hu , Peng Liu

We study the mesonic nonlinear (NL) interaction equation of state (EoS) employing the relativistic mean-field model and investigate the effect of $\sigma$-cut potential (NL-$\sigma$ cut) and dark matter (NL DM) on the non-radial and radial…

High Energy Astrophysical Phenomena · Physics 2025-08-22 Prashant Thakur , Ishfaq Ahmad Rather , Y. Lim
‹ Prev 1 2 3 10 Next ›