scholarly journals Modified dispersion relations and black hole physics

2006 ◽  
Vol 73 (8) ◽  
Author(s):  
Yi Ling ◽  
Bo Hu ◽  
Xiang Li
Keyword(s):  
Black Hole ◽  
Black Hole Physics ◽  
Dispersion Relations ◽  
Modified Dispersion Relations

scholarly journals MODIFIED DISPERSION RELATIONS: FROM BLACK-HOLE ENTROPY TO THE COSMOLOGICAL CONSTANT

2012 ◽  
Vol 14 ◽  
pp. 326-336 ◽  
Author(s):  
REMO GARATTINI
Keyword(s):  
Black Hole ◽  
Cosmological Constant ◽  
Black Hole Entropy ◽  
Zero Point ◽  
Dispersion Relations ◽  
Point Energy ◽  
Modified Dispersion Relations ◽  
Loop Approximation ◽  
Physical Quantities ◽  
Standard Techniques

Quantum Field Theory is plagued by divergences in the attempt to calculate physical quantities. Standard techniques of regularization and renormalization are used to keep under control such a problem. In this paper we would like to use a different scheme based on Modified Dispersion Relations (MDR) to remove infinities appearing in one loop approximation in contrast to what happens in conventional approaches. In particular, we apply the MDR regularization to the computation of the entropy of a Schwarzschild black hole from one side and the Zero Point Energy (ZPE) of the graviton from the other side. The graviton ZPE is connected to the cosmological constant by means of of the Wheeler-DeWitt equation.

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