TL;DR
This paper reviews negative energy densities in quantum field theory, discussing quantum inequalities, potential observability, experimental proposals, and recent results on energy density fluctuations and probability distributions.
Contribution
It provides a comprehensive review of negative energy phenomena, quantum inequalities, and recent experimental and theoretical developments in quantum field theory.
Findings
Quantum inequalities limit negative energy magnitude and duration.
Negative energy effects might be observable with current or near-future experiments.
Recent results include probability distributions of energy density in two-dimensional spacetime.
Abstract
Quantum field theory allows for the suppression of vacuum fluctuations, leading to sub-vacuum phenomena. One of these is the appearance of local negative energy density. Selected aspects of negative energy will be reviewed, including the quantum inequalities which limit its magnitude and duration. However, these inequalities allow the possibility that negative energy and related effects might be observable. Some recent proposals for experiments to search for sub-vacuum phenomena will be discussed. Fluctuations of the energy density around its mean value will also be considered, and some recent results on a probability distribution for the energy density in two dimensional spacetime are summarized.
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.