Nonperturbative lorentzian path integral for gravity
Phys Rev Lett
; 85(5): 924-7, 2000 Jul 31.
Article
en En
| MEDLINE
| ID: mdl-10991440
We construct a well-defined regularized path integral for Lorentzian quantum gravity in terms of dynamically triangulated causal space-times. Each Lorentzian geometry and its action have a unique Wick rotation to the Euclidean sector. All space-time histories possess a distinguished notion of a discrete proper time and, for finite lattice volume, the associated transfer matrix is self-adjoint, bounded, and strictly positive. The degenerate geometric phases found in dynamically triangulated Euclidean gravity are not present.
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01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Año:
2000
Tipo del documento:
Article
País de afiliación:
Dinamarca
Pais de publicación:
Estados Unidos