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Article

Black Holes, Cosmological Solutions, Future Singularities, and Their Thermodynamical Properties in Modified Gravity Theories

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Astrophysics, Cosmology and Gravity Centre (ACGC), University of Cape Town, Rondebosch 7701, Cape Town, South Africa
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Department of Mathematics and Applied Mathematics, University of Cape Town, Rondebosch 7701, Cape Town, South Africa
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Fisika Teorikoaren eta Zientziaren Historia Saila, Zientzia eta Teknologia Fakultatea, Euskal Herriko Unibertsitatea, 644 Posta Kutxatila, 48080 Bilbao, Spain
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Authors to whom correspondence should be addressed.
Entropy 2012, 14(9), 1717-1770; https://doi.org/10.3390/e14091717
Received: 12 July 2012 / Revised: 14 August 2012 / Accepted: 24 August 2012 / Published: 18 September 2012
(This article belongs to the Special Issue Modified Gravity: From Black Holes Entropy to Current Cosmology)
Along this review, we focus on the study of several properties of modified gravity theories, in particular on black-hole solutions and its comparison with those solutions in General Relativity, and on Friedmann–Lemaˆıtre–Robertson–Walker metrics. The thermodynamical properties of fourth order gravity theories are also a subject of this investigation with special attention on local and global stability of paradigmatic f(R) models. In addition, we revise some attempts to extend the Cardy–Verlinde formula, including modified gravity, where a relation between entropy bounds is obtained. Moreover, a deep study on cosmological singularities, which appear as a real possibility for some kind of modified gravity theories, is performed, and the validity of the entropy bounds is studied. View Full-Text
Keywords: 98.80.-k; 04.50.+h 98.80.-k; 04.50.+h
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MDPI and ACS Style

De la Cruz-Dombriz, A.; Sáez-Gómez, D. Black Holes, Cosmological Solutions, Future Singularities, and Their Thermodynamical Properties in Modified Gravity Theories. Entropy 2012, 14, 1717-1770. https://doi.org/10.3390/e14091717

AMA Style

De la Cruz-Dombriz A, Sáez-Gómez D. Black Holes, Cosmological Solutions, Future Singularities, and Their Thermodynamical Properties in Modified Gravity Theories. Entropy. 2012; 14(9):1717-1770. https://doi.org/10.3390/e14091717

Chicago/Turabian Style

De la Cruz-Dombriz, Alvaro, and Diego Sáez-Gómez. 2012. "Black Holes, Cosmological Solutions, Future Singularities, and Their Thermodynamical Properties in Modified Gravity Theories" Entropy 14, no. 9: 1717-1770. https://doi.org/10.3390/e14091717

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