Publications de l'Institut Mathématique, Nouvelle SérieVol. 94(108), pp. 187–196 (2013)
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Publications de l'Institut Mathématique, Nouvelle Série Vol. 94(108), pp. 187–196 (2013) |
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A NEW MODEL OF NONLOCAL MODIFIED GRAVITYIvan Dimitrijevic, Branko Dragovich, Jelena Grujic, Zoran RakcFaculty of Mathematics, University of Belgrade, Belgrade, Serbia; Institute of Physics, University of Belgrade, Belgrade, Serbia; Teachers Training Faculty, University of Belgrade, Belgrade, Serbia; Faculty of Mathematics, University of Belgrade, Belgrade, SerbiaAbstract: We consider a new modified gravity model with nonlocal term of the form $R^{-1}\mathcal{F}(\square)R$. This kind of nonlocality is motivated by investigation of applicability of a few unusual ansätze to obtain some exact cosmological solutions. In particular, we find attractive and useful quadratic ansatz $\square R=qR^2$. Classification (MSC2000): 83Dxx; 83Fxx; 53C21; 83C10; 83C15 Full text of the article: (for faster download, first choose a mirror)
Electronic fulltext finalized on: 8 Nov 2013. This page was last modified: 22 Nov 2013.
© 2013 Mathematical Institute of the Serbian Academy of Science and Arts
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