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Entropy 2000, 2(3), 168-171; doi:10.3390/e2030168

Article

Entropy In the Universe: A New Approach

Antonio Alfonso-Faus

E.U.I.T. Aeronáutica, Plaza Cardenal Cisneros s/n Madrid 28040, Spain

Received: 10 May 2000 / Accepted: 29 July 2000 / Published: 7 September 2000

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Abstract: We propose a new definition of entropy for any mass m, based on gravitation and through the concept of a gravitational cross section. It turns out to be proportional to mass, and therefore extensive, and to the age of the Universe. It is a Machian approach. It is also the number of gravity quanta the mass has emitted through its age. The entropy of the Uni-verse is so determined and the cosmological entropy problem solved.

Keywords: entropy; gravity quanta; black holes; Mach; cosmology

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