THE GEOMETRY OF CLASSICAL CHANGE OF SIGNATURE

被引：18

作者：

CARFORA, M

ELLIS, G

机构：

[1] IST NAZL FIS NUCL,SEZ PAVIA,I-27100 PAVIA,ITALY

[2] UNIV CAPE TOWN,DEPT APPL MATH,RONDEBOSCH 7700,SOUTH AFRICA

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 1995年 / 4卷 / 02期

关键词：

D O I：

10.1142/S0218271895000120

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The proposal of the possibility of change of signature in quantum cosmology has led to the study of this phenomenon in classical general relativity theory, where there has been some controversy about what is and is not possible. Here we present a new analysis of such a change of signature, based on previous studies of the initial value problem in general relativity. We emphasize that there are various continuity suppositions one can make at a classical change of signature, and consider more general assumptions than have been made up to now. We confirm that in general such a change can take place even when the second fundamental form of the surface of change does not vanish.

引用

页码：175 / 187

页数：13

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