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Cited by 386

The DOI matches its Crossref record; 17 of the 17 references it cites were found in a registry or an index.

Super-acceleration from massless, minimally coupled $\phi$4

Open access
Onemli, V K, Woodard, R P·2002·Classical and Quantum Gravity
DOI 10.1088/0264-9381/19/17/311
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Abstract

We derive a simple form for the propagator of a massless, minimally coupled scalar in a locally de Sitter geometry of arbitrary spacetime dimension. We then employ it to compute the fully renormalized stress tensor at one- and two-loop orders for a massless, minimally coupled ϕ 4 theory which is released in Bunch–Davies vacuum at t = 0 in co-moving coordinates. In this system, the uncertainty principle elevates the scalar above the minimum of its potential, resulting in a phase of super-acceleration. With the non-derivative self-interaction the scalar's breaking of de Sitter invariance becomes observable. It is also worth noting that the weak-energy condition is violated on cosmological scales. An interesting subsidiary result is that cancelling overlapping divergences in the stress tensor requires a conformal counterterm which has no effect on purely scalar diagrams.

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Metadata

Authors
Onemli, V. K., & Woodard, R. P.
Venue
Classical and Quantum Gravity
Publisher
IOP Publishing
Published
2002-08-15
Volume
19
Issue
17
Pages
4607-4626
ISSN
0264-9381 (ISSN-L)
DOI
10.1088/0264-9381/19/17/311
OpenAlex
W2075378742
Cited by
386
References
17
FWCI
21.16
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Super-acceleration from massless, minimally coupled $\phi$4. https://app.cochat.ai/papers/10.1088/0264-9381/19/17/311
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Onemli, V. K., & Woodard, R. P. (2002). Super-acceleration from massless, minimally coupled $\phi$4. Classical and Quantum Gravity. https://doi.org/10.1088/0264-9381/19/17/311

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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