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FROM SCHWARZSCHILD BLACK HOLE TO KERR-NEWMAN BLACK HOLE

LIU WEN-BIAO LI XIANG

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FROM SCHWARZSCHILD BLACK HOLE TO KERR-NEWMAN BLACK HOLE

LIU WEN-BIAO, LI XIANG
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  • A falling-in physical particle in metric and electromagnetic tensor field of Schwarzschild and Kerr-Newman black hole is studied.It is concluded that the physical particle will not make the outer horizon smaller.This is coincident with the area theorem.It is well known that δA≥0 andδκ≤0 are the necessary condition for changing from nonextremal to extremal Kerr-Newman black hole.We demonstrate that the surface gravity (temperature) of a Kerr-Newman black hole cannot be reduced to zero in a finite sequence of physical interactions.This is coincident with the third law of black hole thermodynamics.We also consider the trend of area change in the evolution of near-extremal black hole.The effect of negative heat capacity and the entropy renormalization are discussed.
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  • Abstract views:  6349
  • PDF Downloads:  653
  • Cited By: 0
Publishing process
  • Received Date:  28 December 1998
  • Accepted Date:  04 February 1999
  • Published Online:  05 May 1999

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