Anisotropic quark stars in $f(R,L_m,T)$ gravity
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2024
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866909414564298752 |
|---|---|
| author | Tangphati, Takol Sakalli, Izzet Banerjee, Ayan Pradhan, Anirudh |
| author_facet | Tangphati, Takol Sakalli, Izzet Banerjee, Ayan Pradhan, Anirudh |
| contents | We investigate the impact of $f(R,L_m,T)$ gravity on the internal structure of compact stars, expecting this theory to manifest prominently in the high-density cores of such stars. In this study, we begin by considering the algebraic function $f(R,L_m,T) = R + αT L_m$, where $α$ represents the matter-geometry coupling constant. We specifically choose the matter Lagrangian density $L_m= -ρ$ to explore compact stars with anisotropic pressure. To this end, we employ the MIT bag model as an equation of state. We then numerically solve the hydrostatic equilibrium equations to obtain mass-radius relations for quark stars, examining static stability criteria, the adiabatic index, and the speed of sound. Finally, we use recent astrophysical data to constrain the coupling parameter $α$, which may lead to either larger or smaller masses for quark stars compared to their counterparts in general relativity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_01970 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Anisotropic quark stars in $f(R,L_m,T)$ gravity Tangphati, Takol Sakalli, Izzet Banerjee, Ayan Pradhan, Anirudh General Relativity and Quantum Cosmology We investigate the impact of $f(R,L_m,T)$ gravity on the internal structure of compact stars, expecting this theory to manifest prominently in the high-density cores of such stars. In this study, we begin by considering the algebraic function $f(R,L_m,T) = R + αT L_m$, where $α$ represents the matter-geometry coupling constant. We specifically choose the matter Lagrangian density $L_m= -ρ$ to explore compact stars with anisotropic pressure. To this end, we employ the MIT bag model as an equation of state. We then numerically solve the hydrostatic equilibrium equations to obtain mass-radius relations for quark stars, examining static stability criteria, the adiabatic index, and the speed of sound. Finally, we use recent astrophysical data to constrain the coupling parameter $α$, which may lead to either larger or smaller masses for quark stars compared to their counterparts in general relativity. |
| title | Anisotropic quark stars in $f(R,L_m,T)$ gravity |
| topic | General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2404.01970 |