Complex effective actions and gravitational pair creation

Abstract

We use different methods to calculate the imaginary part of the gravitational effective action due to a massless scalar field, with a view on perturbative vs. non-pertubative and the results of ArXiv:2305.18521.

9 pages

References in corpus (12)

• De Sitter Space and Eternity
• Semiclassical Equations for Weakly Inhomogeneous Cosmologies
• Cosmological Particle Production: A Review
• On the Instability of Global de Sitter Space to Particle Creation
• Real or Imaginary? (On pair creation in de Sitter space)
• Gravitational Pair Production and Black Hole Evaporation
• Particle production from nonlocal gravitational effective action
• Propagators and Gaussian effective actions in various patches of de Sitter space
• Large-order Perturbation Theory and de Sitter/Anti de Sitter Effective Actions
• Quantum fields in the future Rindler wedge
• Collinearity constraints for on-shell massless particle three-point functions, and implications for allowed-forbidden $n+1$-point functions
• Nonlocal effective actions in semiclassical gravity: thermal effects in stationary geometries

Cited by in corpus (3)

• Quantum-Ordering Ambiguities in Weak Chern-Simons 4D Gravity and Metastability of the Condensate-Induced Inflation
• On (dis)agreement between different methods of calculation of the imaginary part of the effective action in expanding space-times
• Computational quantum field theory for fermion pair creation in 2-dimensional curved spacetimes