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gr-qc2026
ACT-compatible Inflation in Scalar Field Coupled Gravity
Shin'ichi Nojiri, S. D. Odintsov, V. K. Oikonomou
In this work, we construct models compatible with ACT constraints on inflation in the framework of gravity, with gravity coupled to a scalar fiel…
gr-qc2015★ 67 cited
Unimodular Gravity
S. Nojiri, S. D. Odintsov, V. K. Oikonomou
We extend the formalism of the Einstein-Hilbert unimodular gravity in the context of modified gravity. After appropriately modifying the Friedmann-Robertson-Walker metric in…
gr-qc2011★ 2.8k cited
f(R,T) gravity
Tiberiu Harko, Francisco S. N. Lobo, Shin'ichi Nojiri +1
We consider f(R,T) modified theories of gravity, where the gravitational Lagrangian is given by an arbitrary function of the Ricci scalar R and of the trace of the stress-energy te…