Nonlinear evolution of anisotropic matter configurations under higher-order curvature corrections

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27740%2F25%3A10259592" target="_blank" >RIV/61989100:27740/25:10259592 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1140/epjc/s10052-025-15061-5" target="_blank" >https://link.springer.com/article/10.1140/epjc/s10052-025-15061-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1140/epjc/s10052-025-15061-5" target="_blank" >10.1140/epjc/s10052-025-15061-5</a>

Result language

angličtina

Original language name

Nonlinear evolution of anisotropic matter configurations under higher-order curvature corrections

Original language description

This study examines the dynamical evolution of self-gravitating systems in the presence of exotic matter within the framework of f(R) gravity. Specifically, we have adopted the Starobinsky model f (R) = R + alpha R-2, which incorporates higher-order curvature corrections to describe nonlinear gravitational behavior. The analysis focuses on the nonlinear spherical evolution of anisotropic matter configurations and explains how dark matter influences their physical characteristics. The presence of dark matter is found to significantly affect the radial and tangential pressure distributions, thereby altering the overall dynamics of the system. The model is employed for compact object Her X-1 described by the generalized Tolman-Kuchowicz metric, demonstrating a singularity-free behavior of the physical parameters. The results reveal that increasing the parameter n of the generalized Tolman-Kuchowicz metric leads to striking variations in the model characteristics, highlighting its essential role in governing internal structure and evolution of the compact object. The model remains physically viable under different testing criteria like energy conditions, hydrostatic equilibrium condition, adiabatic index, causality conditions, Herrera&apos;s Cracking condition and mass-radius relation presented in this work.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10100 - Mathematics

Project

<a href="/en/project/EH23_021%2F0008759" target="_blank" >EH23_021/0008759: Increasing the resilience of power grids in the context of decarbonisation, decentralisation and sustainable socio-economic development</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

European Physical Journal C

ISSN

1434-6044

e-ISSN

1434-6052

Volume of the periodical

85

Issue of the periodical within the volume

11

Country of publishing house

US - UNITED STATES

Number of pages

14

Pages from-to

1310

UT code for WoS article

001616736200004

EID of the result in the Scopus database

2-s2.0-105021974340