My field of expertise is theoretical cosmology and astrophysics. I work on the origin of large scale structure in the Universe, on the general theory of relativity and on the nature of dark matter and dark energy. My most recent book, The Perfect Theory, is a biography of General Relativity.
Strong Constraints on Cosmological Gravity from GW170817 and GRB 170817A.
Physical review letters 119:25 (2017) 251301-251301
Noise angular power spectrum of gravitational wave background experiments
Physical Review D American Physical Society 101:12 (2020) 124048
Galaxy morphology rules out astrophysically relevant Hu-Sawicki f (R) gravity
PHYSICAL REVIEW D American Physical Society (APS) 102:10 (2020) ARTN 104060
Growth of massive scalar hair around a Schwarzschild black hole
Physical Review D American Physical Society 100 (2019) 063014