Open AccessFROM SCHWARZSCHILD BLACK HOLE TO KERR-NEWMAN BLACK HOLE
Author(s) -
Wenbiao Liu,
Xiang Li
Publication year - 1999
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.48.1793
Subject(s) - physics , rotating black hole , extremal black hole , black hole (networking) , charged black hole , white hole , black hole thermodynamics , schwarzschild radius , schwarzschild metric , hawking radiation , black brane , classical mechanics , quantum electrodynamics , quantum mechanics , entropy (arrow of time) , general relativity , gravitation , angular momentum , computer network , routing protocol , routing (electronic design automation) , computer science , link state routing protocol
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.