Thermodynamics via creation from nothing: Limiting the cosmological constant landscape

Journal Article · Fri Dec 15 04:00:00 EST 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.74.121502· OSTI ID:20868152

Barvinsky, A O; Kamenshchik, A Yu ^[1]

---

1. Theory Department, Lebedev Physics Institute, Leninsky Prospect 53, 119991 Moscow (Russian Federation) and Dipartimento di Fisica and INFN, Via Irnerio 46, 40126 Bologna (Italy) and L. D. Landau Institute for Theoretical Physics, Kosygin str. 2, 119334 Moscow (Russian Federation)

The creation of a quantum Universe is described by a density matrix which yields an ensemble of universes with the cosmological constant limited to a bounded range {lambda}{sub min}{<=}{lambda}{<=}{lambda}{sub max}. The domain {lambda}<{lambda}{sub 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 {lambda}{sub 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.

• OSTI ID: 20868152
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 12 Vol. 74; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COSMOLOGICAL CONSTANT
COSMOLOGY
DENSITY MATRIX
INSTANTONS
QUANTUM FIELD THEORY
RENORMALIZATION
THERMODYNAMICS
UNIVERSE