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4 papers · 1 filter
Scalar Field Contribution to Rotating Black Hole Entropy
M. Kenmoku, K. Ishimoto, K. K. Nandi +1
Scalar field contribution to entropy is studied in arbitrary D dimensional one parameter rotating spacetime by semiclassical method. By introducing the zenithal angle dependent cut…
Solution Independent Analysis of Black Hole Entropy in Brick Wall Model
M. Kenmoku, K. K. Nandi, K. Shigemoto
Using the brick wall regularization of 't Hooft, the entropy of non-extreme and extreme black holes is investigated in a general static, spherically symmetric spacetime. We classif…
Comment on the Ghost State in the Lee Model
Kazuyasu Shigemoto
We examine the ghost state in the Lee model, and give the physically meaningful interpretatation for norm of the ghost state. According to this interpretation, the semi-positivity…
Comment on the Origin of the Supermassive Black Hole
Kazuyasu Shigemoto
We give the comment why the supermassive black hole exists at the center of almost all galaxies. We consider the origin of the supermassive black hole from the point of view of the…