171 citations · 2k across the 40 of their papers we have counts for
39 papers
Running Hubble Tension and a H0 Diagnostic
Chethan Krishnan, Eoin Ó Colgáin, M. M. Sheikh-Jabbari +1
Hubble tension is routinely presented as a mismatch between the Hubble constant determined locally and a value inferred from the flat CDM cosmology. In essence, the tensio…
Is there an early Universe solution to Hubble tension?
Chethan Krishnan, Eoin Ó Colgáin, Ruchika +3
We consider a low redshift cosmological dataset comprising megamasers, cosmic chronometers, type Ia SNe and BAO, which we bin according to their redshift. For each bin, w…
Ehlers as EM duality in the double copy
A. Banerjee, E. Ó Colgáin, J. A. Rosabal +1
Given a solution to 4D Einstein gravity with an isometry direction, it is known that the equations of motion are identical to those of a 3D -model with target space geometry $SU…
A hint of matter underdensity at low ?
Eoin Ó Colgáin
The CDM cosmological model provides to first approximation a good description of the universe, but various tensions with data, most notably Hubble tension, persist. In this work…
Embedding the modified CYBE in Supergravity
Thiago Araujo, Eoin Ó Colgáin, Hossein Yavartanoo
It has recently been demonstrated that the Classical Yang-Baxter Equation (CYBE) emerges from supergravity via the open-closed string map. Thus, given any solution with an isometry…
Yang-Baxter Deformations Beyond Coset Spaces (a slick way to do TsT)
I. Bakhmatov, E. Ó Colgáin, M. M. Sheikh-Jabbari +1
Yang-Baxter string sigma-models provide a systematic way to deform coset geometries, such as , while retaining the -model integrability. It has been shown that…