Nonequilibrium Quantum Fields in Cosmology: Comments on Selected Current Topics
B. L. Hu (Department of Physics, University of Maryland, College Park,, MD, Institute for Advanced Study, Princeton, New Jersey, USA)
TL;DR
This paper discusses how concepts from quantum open systems and nonequilibrium statistical mechanics can be applied to cosmology, exploring topics like entropy, galaxy formation, and phase transitions in the early universe.
Contribution
It introduces new conceptual questions and proposes research directions on quantum statistical processes in cosmology, linking advanced quantum methods to early universe phenomena.
Findings
Insights into entropy generation during cosmological particle creation
Analysis of quantum effects in galaxy formation
Discussion of phase transitions during inflation
Abstract
Concepts of quantum open systems and ideas of correlation dynamics in nonequilibrium statistical mechanics, as well as methods of closed-time-path effective action and influence functional in quantum field theory can be usefully applied for the analysis of quantum statistical processes in gravitation and cosmology. We raise a few conceptual questions and suggest some new directions of research on selected currrent topics on the physics of the early universe, such as entropy generation in cosmological particle creation, quantum theory of galaxy formation, and phase transition in inflationary cosmology.
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Taxonomy
TopicsCosmology and Gravitation Theories · Advanced Thermodynamics and Statistical Mechanics · Black Holes and Theoretical Physics