All Writings

The deep-time chronology of the universe, stellar fuel exhaustion, black hole evaporation, asymptotic de Sitter horizons, Penrose Conformal Cyclic Cosmology, and the...

Linear perturbation theory in expanding spacetime, the Jeans criterion, dark matter halo virialization, Zel'dovich pancake collapse, filaments, and cosmic voids.

The 1998 discovery of accelerating cosmic expansion, Type Ia supernovae as standard candles, the cosmological constant problem, quintessence scalar fields, and the...

The astrophysical evidence for non-baryonic dark matter, flat galactic rotation curves, collisionless dark matter halos, the Bullet Cluster, and WIMPs vs axions.

Thermal history of the first three minutes, weak interaction freeze-out at T ~ 0.8 MeV, free neutron beta decay, photodissociation delay, and...

The relic thermal radiation of the early universe, recombination at z ~ 1100, photon-baryon acoustic standing waves, Silk damping, and E/B-mode polarization.

Resolving the Horizon, Flatness, and Monopole problems; the slow-roll dynamics of the inflaton field; and how microscopic quantum fluctuations seeded the macroscopic...

The Cosmological Principle, homogeneous and isotropic spacetime geometry, cosmic scale factors, spatial curvature, and the Friedmann dynamical equations.

The landmark multi-messenger discovery GW170817, rapid neutron capture (r-process) nucleosynthesis, lanthanide opacity, and the cosmic origins of gold and platinum.

LIGO and Virgo kilometer-scale Fabry-Pérot laser interferometry, measuring sub-nuclear strains, post-Newtonian binary inspiral waveforms, and the discovery of GW150914.