5 papers
Exploring the Observational Constraints and Cosmological Dynamics in f(Q,L_m) Gravity
Ratul Mandal, Anamika Kotal, Vipin Kumar Sharma +1
We explore two scenarios of gravity: linear and non-linear gravity models. The dynamical system analysis identifies two critical points for each of the propose…
CDM Model: Cosmological Implications and Dynamical System Analysis
Himanshu Chaudhary, Ratul Mandal, Masroor Bashir +2
We investigated a time-varying cosmological constant model using recent BAO measurements from DESI DR2, combined with Type Ia supernova samples (Pantheon, DES-Dovekie, and Un…
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…
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…
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…