Complex actions in two-dimensional topology change
نویسندگان
چکیده
منابع مشابه
Complex actions in two-dimensional topology change
We investigate topology change in (1+1) dimensions by analyzing the scalarcurvature action 12 ∫ RdV at the points of metric-degeneration that (with minor exceptions) any nontrivial Lorentzian cobordism necessarily possesses. In two dimensions any cobordism can be built up as a combination of only two elementary types, the “yarmulke” and the “trousers.” For each of these elementary cobordisms, w...
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ژورنال
عنوان ژورنال: Classical and Quantum Gravity
سال: 1997
ISSN: 0264-9381,1361-6382
DOI: 10.1088/0264-9381/14/1/018