3 papers
gr-qc2025
SSFDE Model: Cosmological Implications and Dynamical System Analysis
Ritika Nagpal, Anil Kandel, Ratul Mandal +2
In this paper, we consider an interacting scalar field dark energy model with an exponential potential and a dark sector coupling \( Q = 3γHρ_{dm} \), which has been observationall…
gr-qc2025
Exploring the dynamics of coincident f(Q) gravity in the presence of DBI-essence scalar field
Ratul Mandal, Ujjal Debnath, Anirudh Pradhan
In theoretical cosmology, symmetric teleparallel gravity or gravity based on nonmetricity tensor Q has become an interesting alternative to General relativity in recent year…
gr-qc2025
f(R, , T) Gravity: Cosmological Implications and Dynamical System Analysis
Ratul Mandal, Himanshu Chaudhary, Tiberiu Harko +2
We consider the cosmological implications of a four-dimensional extension of the Gauss-Bonnet gravity, where is the Gauss-Bonnet topological invariant, in which the Eins…