| Name: | Koushik Ballav Goswami |
| Affiliation: | Cooch Behar Panchanan Barma University |
| Conference ID: | ASI2025_252 |
| Title: | Isotropic cold compact objects in f(R,T) gravity admitting CFL equation of state modified by a non-minimal QCD correction factor |
| Authors: | Koushik Ballav Goswami 1, Debadri Bhattacharjee 1, Pradip Kumar Chattopadhyay1 and Anirban Saha1 |
| Authors Affiliation: | 1 IUCAA Centre for Astronomy Research and Development (ICARD), Department of Physics, Coochbehar Panchanan Barma University, Vivekananda Street, District: Coochbehar, Pin: 736101, West Bengal, India.
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| Mode of Presentation: | Poster |
| Abstract Category: | High Energy Phenomena, Fundamental Physics and Astronomy |
| Abstract: | This article presents a method to find exact solution of field equations in $f(R,T)$ theory of gravity for isotropic cold compact objects in hydrostatic equilibrium. In this particular case, the function $f(R,T)$ is assumed to be a simple linear combination of Ricci scalar ($R$) and the trace of the energy-momentum tensor ($T$). The interior of these compact objects is modeled using a colour-flavour locked (CFL) equation of state, which describes the behaviour of deconfined quarks. To simplify the calculations, a specific form of the metric, proposed by Vaidya and Tikekar, is adopted. This metric describes a 3-spheroidal geometry embedded in a flat four-dimensional space. The CFL equation of state is generalised by incorporating a QCD correction term ($c_{cor}$), which significantly influences the equation of state and the energy per baryon of quark matter. This modification allows the model to accommodate a wider range of compact objects, including EXO 1745-248, LMC X-4, PSR J0740+6620, and even the recently observed binary neutron star merger GW 230529$_{-}$181500. The calculated radii of these objects from the model are consistent with the observed values. |
