Horava-Lifshitz quantum cosmology

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

bertolami, o (Autor) FCUP; zarro, cad (Autor) Outra

Revista

Título: Physical Review D - Particles, Fields, Gravitation and Cosmology

Vol. 84

ISSN: 1550-7998

Editora: American Physical Society

Indexação

ISI Web of Knowledge - 41 Citações

Scopus - 43 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: P-002-NQ1

DOI: 10.1103/physrevd.84.044042

Abstract (EN): In this work, a minisuperspace model for the projectable Horava-Lifshitz gravity without the detailed-balance condition is investigated. The Wheeler-DeWitt equation is derived and its solutions are studied and discussed for some particular cases where, due to Horava-Lifshitz gravity, there is a "potential barrier'' nearby a = 0. For a vanishing cosmological constant, a normalizable wave function of the Universe is found. When the cosmological constant is nonvanishing, the WKB method is used to obtain solutions for the wave function of the Universe. Using the Hamilton-Jacobi equation, one discusses how the transition from quantum to classical regime occurs and, for the case of a positive cosmological constant, the scale factor is shown to grow exponentially, hence recovering the general relativity behavior for the late Universe.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 12