SELF-ADJOINT EXTENSIONS AND SIGNATURE CHANGE

被引：8
|
作者：
EGUSQUIZA, IL
机构：
[1] Department of Theoretical Physics, University of the Basque Country, PK-48080, Bilbao
来源：
CLASSICAL AND QUANTUM GRAVITY | 1995年 / 12卷 / 09期
关键词：
D O I：
10.1088/0264-9381/12/9/001
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study the self-adjoint extensions of the spatial part of the D'Alembert operator in a spacetime with two changes of signature. We identify a set of boundary conditions, parametrized by U(2) matrices, which correspond to Dirichlet boundary conditions for the fields, and from which we argue against the suggestion that regions of signature change can isolate singularities.
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页码：L89 / L92
页数：4
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