Published 1984 | Version v1
Report Open

Behaviour of the gravitational field around the initial singularity

Description

The ultralocal representation of the canonically quantized gravitational field is used to obtain the evolution of coherent states in the immediate neighborhood of the singularity. It is shown that smearing functions play the role of classical fields since they correspond to cosmological solutions around the singularity. A special class of ultralocal coherent states is shown to contain the essential aspects of the dynamics of the system when we choose a simple representation for the field operators of the theory. When the ultralocality condition is broken a conjecture will be made about the quantum evolution of coherent states in the classical limit. (Author)

Availability note (English)

MF available from INIS under the Report Number.

Abstract (Portuguese)

Usa-se a representacao ultra-local do campo gravitacional canonicamente quantizado para obter a evolucao dos estados coerentes na vizinhanca imediata da singularidade. Demonstra-se que as funcoes suavizadoras desempenham o papel dos campos classicos ja que eles correspondem a solucoes cosmologicas em torno da singularidade. Demonstra-se tambem que uma classe especial de estados coerentes ultra-locais engloba os aspectos essenciais da dinamica do sistema quando escolhida uma representacao simples para operadores do campo da teoria. Para o caso em que a condicao de ultra-localidade e satisfeita, conjectura-se sobre a evolucao quantica dos estados coerentes no limite classico. (T.K.)

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Additional details

Publishing Information

Imprint Pagination
31 p.
Report number
IFT-P--04/84

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
16015473
Subject category
S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
COSMOLOGICAL MODELS; MATHEMATICAL MODELS; QUANTIZATION; QUANTUM GRAVITY; SINGULARITY
Descriptors DEC
FIELD THEORIES; QUANTUM FIELD THEORY