TY - JOUR
ID - 409
TI - Quark Stars in Generalized Hybrid Metric-Palatini Gravity
JO - Iranian Journal of Astronomy and Astrophysics
JA - IJAA
LA - en
SN - 2322-4924
AU - Aliannejadi, Reyhaneh
AU - Haghani, Zahra
AD - School of Physics, Damghan University, Damghan, Iran
Y1 - 2024
PY - 2024
VL - 11
IS - 1
SP - 45
EP - 57
KW - generalized hybrid metric-Palatini gravity
KW - CFL quark star
KW - MIT bag model
KW - mass-radius relation
KW - compactness
DO - 10.22128/ijaa.2024.819.1183
N2 - We investigate the physical properties of quark stars with two different equations of state in generalized hybrid metric-Palatini gravity. This theory corresponds to a bi-scalar gravitational theory with two non-minimally-coupled scalar fields.The field equations of the metric tensor and scalar fields are derived by varying the action with respect to the dynamical fields. We obtain the field equations for static spherically symmetric geometry interior of compact objects. The numerical solutions for two types of quark stars, the MIT bag and CFL model are studied. The solutions reveal the structure of the compact objects. The solutions are obtained for different values of the model parameters. All considered cases show that compact objects are more massive than their general relativity counterpart. The surface redshift and compactness are also obtained which shows that the generalized hybrid metric-Palatini quark stars have higher surface redshift and are more compact than general relativity quark stars.
UR - https://ijaa.du.ac.ir/article_409.html
L1 - https://ijaa.du.ac.ir/article_409_6395b1045ad63ade051c95fa48d9722f.pdf
ER -