Thermodynamics via Creation from Nothing: Limiting the Cosmological Constant Landscape

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dc.creatorBarvinsky, A. O.
dc.creatorKamenshchik, A. Yu.
dc.date2006-11-18
dc.date.accessioned2026-07-07T11:02:59Z
dc.date.available2026-07-07T11:02:59Z
dc.descriptionThe creation of a quantum Universe is described by a {\em density matrix} which yields an ensemble of universes with the cosmological constant limited to a bounded range $Λ_{\rm min}\leq Λ\leq Λ_{\rm max}$. The domain $Λ<Λ_{\rm min}$ is ruled out by a cosmological bootstrap requirement (the self-consistent back reaction of hot matter). The upper cutoff results from the quantum effects of vacuum energy and the conformal anomaly mediated by a special ghost-avoidance renormalization. The cutoff $Λ_{\rm max}$ establishes a new quantum scale -- the accumulation point of an infinite sequence of garland-type instantons. The dependence of the cosmological constant range on particle phenomenology suggests a possible dynamical selection mechanism for the landscape of string vacua.
dc.descriptionRevTex, 4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/hep-th/0611206
dc.identifierhttp://arxiv.org/abs/hep-th/0611206
dc.identifierPhys.Rev.D74:121502,2006
dc.identifierdoi:10.1103/PhysRevD.74.121502
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/188437
dc.subjectHigh Energy Physics - Theory
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleThermodynamics via Creation from Nothing: Limiting the Cosmological Constant Landscape
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