Effective field theory during inflation: Reduced density matrix and its quantum master equation

Effective Field Theory for Inflation

The methods of effective field theory are used to study generic theories of inflation with a single inflaton field. For scalar modes, the leading corrections to the R correlation function are found to be purely of the k-inflation type. For tensor modes the leading corrections to the correlation function arise from terms in the action that are quadratic in the curvature, including a parity-viola...

Dynamics of the Density Matrix in Contact with a Thermal Bath and the Quantum Master Equation

We study the structure of the time evolution of the density matrix in contact with a thermal bath in a standard projection operator scheme. In general, the equation of motions of the density matrix with dissipative effects tends to lead any initial state into a steady state. The reduced density matrix of the system in the steady state is obtained by tracing out the degree of freedom of the ther...

A Quantum Field Theory Warm Inflation Model

A quantum field theory warm inflation model is presented that solves the cosmological horizon/flatness problems. An interpretation of the model is given from supersymmetry and superstring theory. To appear in Proceedings COSMOS 98, Monterey, CA, November 1998

Effective Field Theory and Finite-Density Systems

This review gives an overview of effective field theory (EFT) as applied at finite density, with a focus on nuclear many-body systems. Uniform systems with short-range interactions illustrate the ingredients and virtues of manybody EFT; we also survey the varied frontiers of EFT for finite nuclei and nuclear matter. 1 Click here for quick links to Annual Reviews content online, including: • Oth...

Part I Reduced Density Matrix Functional Theory