How to define a unique vacuum in cosmology
Llui\'is Bel
TL;DR
This paper introduces a new, time-independent way to define the vacuum state in cosmology by selecting specific positive and negative energy modes of the Klein-Gordon equation.
Contribution
It proposes a novel method for defining the vacuum in cosmology based on a distinguished set of energy modes, improving upon previous approaches.
Findings
Provides a consistent, time-independent vacuum definition.
Clarifies the role of energy modes in quantum field theory in curved spacetime.
Potentially impacts the understanding of particle creation in cosmology.
Abstract
We propose a distinguished set of positive and negative energy modes of the Klein-Gordon equation as a time independent definition of the vacuum state of a quantized scalar field.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsCosmology and Gravitation Theories · Black Holes and Theoretical Physics · Advanced Differential Geometry Research