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.

(2012). Modified dispersion relations: from black-hole entropy to the cosmological constant [conference presentation - intervento a convegno]. In INTERNATIONAL JOURNAL OF MODERN PHYSICS CONFERENCE SERIES. Retrieved from http://hdl.handle.net/10446/28869

Modified dispersion relations: from black-hole entropy to the cosmological constant

GARATTINI, Remo
2012-01-01

Abstract

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.
2012
Garattini, Remo
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10446/28869
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