Black hole area in Brans-Dicke theory.

Details Black hole area in Brans-Dicke theory. Black hole area in Brans-Dicke theory.

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996phrvd..54.7483g&link_type=abstract

Physical Review D, Vol. 54, No. 12, p. 7483 - 7489

Physics

8

Black Holes: Brans-Dicke Theory

Scientific paper

The author shows that the dynamics of the scalar field φ(x) = "G-1(x)" in Brans-Dicke theories of gravity makes the surface area of the black hole horizon oscillatory during its dynamical evolution. It explicitly explains why the area theorem does not hold in Brans-Dicke theory. However, is is shown that there exists a certain nondecreasing quantity defined on the event horizon which is proportional to the black hole entropy for the case of stationary solutions in Brans-Dicke theory. Some numerical simulations are demonstrated for Oppenheimer Snyder collapse in Brans-Dicke theory.

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