91 citations · 271 across the 6 of their papers we have counts for
6 papers
Nonequilibrium dynamics of quantum fields in inflationary cosmology
Stephen A. Ramsey
The nonequilibrium dynamics of quantum fields is studied in inflationary cosmology, with particular emphasis on applications to the problem of post-inflation reheating. The Schwing…
Hydrodynamic transport functions from quantum kinetic theory
E. Calzetta, B. L. Hu, S. Ramsey
Starting from the quantum kinetic field theory [E. Calzetta and B. L. Hu, Phys. Rev. D37, 2878 (1988)] constructed from the closed-time-path (CTP), two-particle-irreducible (2PI) e…
One-loop theory in Robertson-Walker spacetimes: adiabatic regularization and analytic approximation
Carmen Molina-Paris, Paul R. Anderson, Stephen A. Ramsey
The renormalization of a scalar field theory with a quartic self-coupling (a theory) via adiabatic regularization in a general Robertson-Walker spacetime is discussed. The a…
Defect Formation and Critical Dynamics in the Early Universe
G. J. Stephens, E. A. Calzetta, B. L. Hu +1
We study the nonequilibrium dynamics leading to the formation of topological defects in a symmetry-breaking phase transition of a quantum scalar field with λΦ^4 self-interaction in…
Nonequilibrium inflaton dynamics and reheating. II. Fermion production, noise, and stochasticity
S. A. Ramsey, B. L. Hu, A. M. Stylianopoulos
We present a detailed and systematic analysis of the coarse-grained, nonequilibrium dynamics of a scalar inflaton field coupled to a fermion field in the latter stages of the rehea…
Nonequilibrium inflaton dynamics and reheating: Back reaction of parametric particle creation and curved spacetime effects
S. A. Ramsey, B. L. Hu
We present a detailed and systematic analysis of the nonperturbative, nonequilibrium dynamics of a quantum field in the reheating phase of inflatonary cosmology, including full bac…