Order reduction in semiclassical cosmology

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dc.creatorSiemieniec-Ozieblo, Grazyna
dc.creatorWoszczyna, Andrzej
dc.date1999-01-29
dc.date.accessioned2026-07-07T10:31:50Z
dc.date.available2026-07-07T10:31:50Z
dc.descriptionWe investigate the Robertson-Walker cosmology with Lagrangian $R+α_1\hbar R^2+α_2\hbar R^{μν}R_{μν} +L_{rad}$ where $L_{rad}$ means classical source with traceless energy-momentum tensor. We weaken the self-consistence condition (L. Parker, J. Z. Simon, Phys. Rev. {D47}(1993),{1339}). Quantum corrections are expressed as contributions to the effective equation of state. We show that the empty space-time is stable within the class of radiation-filled expanding universes with no order reduction of the field equations.
dc.descriptionto be published in Phys.Rev.D vol. 59, 6 pages with 2 figures
dc.identifierhttps://arxiv.org/abs/astro-ph/9901416
dc.identifierhttp://arxiv.org/abs/astro-ph/9901416
dc.identifierPhys.Rev.D59:083504,1999
dc.identifierdoi:10.1103/PhysRevD.59.083504
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/178550
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleOrder reduction in semiclassical cosmology
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