The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.
Quantum effects can renderw<−1on cosmological scales
Open accessAbstract
We report on a revision of our previous computation of the renormalized expectation value of the stress-energy tensor of a massless, minimally coupled scalar with a quartic self-interaction on a locally de Sitter background. This model is important because it demonstrates that quantum effects can lead to violations of the weak energy condition on cosmological scales---on average, not just in fluctuations---although the effect in this particular model is far too small to be observed. The revision consists of modifying the propagator so that dimensional regularization can be used when the dimension of the renormalized theory is not four. Although the finite part of the stress-energy tensor does not change (in $D=4$) from our previous result, the counterterms do. We also speculate that a certain, finite and separately conserved part of the stress tensor can be subsumed into a natural correction of the initial state from free Bunch-Davies vacuum.
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Cites
Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
Riess, A. G., Filippenko, A. V., Challis, P., Clocchiatti, A., Diercks, A., Garnavich, P. M., Gilliland, R. L., Hogan, C. J., Jha, S., Kirshner, R. P., et al. (1998) · The Astronomical Journal · doi:10.1086/300499 · Cited by 19,704
Measurements of Ω and Λ from 42 High‐Redshift Supernovae
Perlmutter, S., Aldering, G., Goldhaber, G., Knop, R. A., Nugent, P., Castro, P. G., Deustua, S., Fabbro, S., Goobar, A., Groom, D. E., et al. (1999) · The Astrophysical Journal · doi:10.1086/307221 · Cited by 18,062
Equilibrium state of a self-interacting scalar field in the de Sitter background
Starobinsky, A. A., & Yokoyama, J. (1994) · Physical Review D · doi:10.1103/physrevd.50.6357 · Cited by 809
Cited by
Modified gravity theories on a nutshell: Inflation, bounce and late-time evolution
Nojiri, S., Odintsov, S. D., & Oikonomou, V. K. (2017) · Physics Reports · doi:10.1016/j.physrep.2017.06.001 · Cited by 2,734
Avoiding Dark Energy with 1/R Modifications of Gravity
Woodard, R. (2007) · Lecture Notes in Physics · doi:10.1007/978-3-540-71013-4_14 · Cited by 455
Self-citationEasson, D. A., Sawicki, I., & Vikman, A. (2011) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2011/11/021 · Cited by 291
Effect of the trace anomaly on the cosmological constant
Koksma, J. F., & Prokopec, T. (2008) · Physical Review D · doi:10.1103/physrevd.78.023508 · Cited by 19
Metadata
- Authors
- Onemli, V. K., & Woodard, R. P.
- Venue
- Physical Review D
- Publisher
- American Physical Society (APS)
- Published
- 2004-11-02
- Volume
- 70
- Issue
- 10
- ISSN
- 0556-2821 (ISSN-L)
- 1550-7998
- 1550-2368
- OpenAlex
- W2006578949
- Cited by
- 454
- References
- 3
- FWCI
- 28.55
- Type
- journal article
- Language
- en
- Open access
- green
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- Onemli, V. K., & Woodard, R. P. (2004). Quantum effects can renderw<−1on cosmological scales. Physical Review D. https://doi.org/10.1103/physrevd.70.107301
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