Quark stars — hypothetical compact stars made entirely of deconfined quark matter — offer a clean testing ground for gravity beyond general relativity. We study their structure in f(T,
Τ
) gravity, a teleparallel theory in which torsion is coupled directly to the trace of the energy--momentum tensor through a sin...
Takol Tangphati, A. Banerjee, I. Sakallı et al.· Chinese Physics C, High Ener...· 0 citations
We study circular geodesics of neutral test particles in the static charged solution of Scalar--Tensor--Vector Gravity (STVG), and we use the twin kilohertz quasiperiodic oscillations (QPOs) of twelve accreting compact objects to bound its parameters. Starting from the effective potential we obtain closed forms for the...
M. Muccino, K. Boshkayev, B. Akhouri et al.· 0 citations
A modified gravitational model whose action is given by an arbitrary function of the Ricci scalar, the matter Lagrangian density, a scalar field, and its kinetic term is investigated as an extension of the gravitational sector with one additional dynamical degree of freedom. Within this framework, the causal structure...
F. Ahmed, A. Al-Badawi, I. Sakallı· Modern Physics Letters A· 0 citations
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