P. Dunsby

activity

20242026

f (R)

Gravity: Analysis of the Ekpyrosis and Accelerating Regimes

2 citations · 2 across the 12 of their papers we have counts for

collaborators

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astro-ph.CO2026

Beyond $j = 1$ : Observational Constraints on Almost- $Λ$ CDM Cosmologies

Jess Worsley, Saikat Chakraborty, Peter Dunsby

The cosmographic condition $j (z) = 1$ provides the kinematical signature of the spatially flat $Λ$ CDM model independently of any specific dark-energy or modified-gravity theory. We i…

astro-ph.CO2026

Cosmological structure growth in energy-momentum squared gravity

Alvaro de la Cruz-Dombriz, Peter K. S. Dunsby, Payel Sarkar

We investigate the cosmological evolution of matter perturbations in the modified gravity model $f (R, T^{2})$ , where $T^{2} = T_{μν} T^{μν}$ denotes the quadratic contraction of the energy…

astro-ph.CO2026

Constraining Scale-Dependent Growth in $f (R)$ Gravity with Future 21 cm Surveys

Apurba Samanta, Bhuwan Joshi, Jess Worsley +2

Recent observations, particularly from DESI, have provided intriguing hints of dynamical behaviour in late-time dark energy. Modified gravity theories offer a compelling framework…

Beyond j=1: Observational Constraints on Almost-ΛCDM Cosmologies

Cosmological structure growth in energy-momentum squared gravity

Constraining Scale-Dependent Growth in f(R) Gravity with Future 21 cm Surveys

Beyond $j = 1$ : Observational Constraints on Almost- $Λ$ CDM Cosmologies

Constraining Scale-Dependent Growth in $f (R)$ Gravity with Future 21 cm Surveys