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gr-qc2000
Evolution of Black Holes in Brans-Dicke Cosmology
Nobuyuki Sakai, John D. Barrow
We consider a modified ``Swiss cheese'' model in the Brans-Dicke theory, and discuss the evolution of black holes in the expanding universe. We define the black hole radius by the…
gr-qc2000
Topological Defect Inflation
Nobuyuki Sakai
We address some issues of topological defect inflation. (1) We clarify the causal structure of an inflating magnetic monopole. The spacetime diagram shows explicitly that this mode…