331 citations · 2.1k across the 38 of their papers we have counts for
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gr-qc2019★ 26 cited
Energy-momentum tensor and helicity for gauge fields coupled to a pseudo-scalar inflaton
M. Ballardini, M. Braglia, F. Finelli +2
We study the energy-momentum tensor and helicity of gauge fields coupled through to a pseudo-scalar field driving inflation. Under the assumption of a consta…
astro-ph.CO2019★ 78 cited
Cosmological constraints on post-Newtonian parameters in effectively massless scalar-tensor theories of gravity
M. Rossi, M. Ballardini, M. Braglia +4
We study the cosmological constraints on the variation of the Newton's constant and on post-Newtonian parameters for simple models of scalar-tensor theory of gravity beyond the ext…