International Journal of Physics
ISSN (Print): 2333-4568 ISSN (Online): 2333-4576 Website: Editor-in-chief: B.D. Indu
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International Journal of Physics. 2018, 6(5), 155-160
DOI: 10.12691/ijp-6-5-3
Open AccessArticle

Empty Hole Entropy and Black Hole Entropy in Gravitation

XiaoLin Li1,

1Chongqin, China

Pub. Date: October 12, 2018

Cite this paper:
XiaoLin Li. Empty Hole Entropy and Black Hole Entropy in Gravitation. International Journal of Physics. 2018; 6(5):155-160. doi: 10.12691/ijp-6-5-3


In the projection gravitation theory, the center of a gravitational source is an empty hole, not black hole. The gravitation can be understood as a new kind of Lorentz symmetry breaking. Multiple empty holes can merge together to form a large empty hole. So the empty holes form a thermodynamic system. So the empty hole has thermodynamic properties, such as entropy and temperature. We discuss two models of empty holes merging. The first model derives out a result that empty hole entropy is proportional to the radius of the empty hole. The second model can simply derive out the formula of black hole entropy in General Relativity. The black hole entropy is just a special case in empty hole. Two models get the same result that the temperature of the empty hole is inversely proportional to its radius. The empty hole has a new statistical distribution mode, that is the empty hole distribution. In the new projection gravitation, the Planck energy and the Planck length have a new and different physical meaning. The two constants represent a special kind of association relationship that has not yet been understood by humans.

projection gravitation empty hole Lorentz symmetry breaking empty hole merging empty hole entropy empty hole temperature black hole entropy black hole temperature empty hole distribution Planck energy Planck length

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[1]  XiaoLin Li. Projection Gravitation, a Projection Force from 5-dimensional Space-time into 4-dimensional Space-time International Journal of Physics , October 2017, Vol. 5, No. 5.
[2]  Bekenstein, Jacob D. (April 1973). “Black holes and entropy”. Physical Review D 7(8): 2333-2346.
[3]  Bardeen, J. M.; Carter, B.; Hawking, S. W. The four laws of black hole mechanics. Comm.Math. Phys. 31 (1973), no. 2, 161-170.
[4]  “introduction to modern statistical mechanics”, David Chandler, ISBN-13: 978-0195042771.
[5]  “The Feynman Lectures on Physics (Volume I,II,III)”,R. P. Feynman,R. B. Leighton,M. Sands, ISBN 9787506272476,ISBN 9787506272483,ISBN 9787506272490.
[6]  Sivaram, C. (2007). “What is Special About the Planck Mass?”.