Titlebook: Quantum Gravity and Quantum Cosmology; Gianluca Calcagni,Lefteris Papantonopoulos,Nikos T Book 2013 Springer-Verlag Berlin Heidelberg 2013

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Holography for Inflationary Cosmologytures of a universe emerging from a non-geometric phase in which the gravitational description is strongly coupled at early times. A custom fit to WMAP7 and other astrophysical data allows us to estimate the parameters of the holographic model and assess its performance relative to standard power-law .CDM.

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Spinor Gravity and Diffeomorphism Invariance on the Latticein terms of fermions. This allows for a diffeomorphism invariant functional measure and avoids problems of boundedness of the action. We discuss the concept of lattice diffeomorphism invariance. This is realized if the action does not depend on the positioning of abstract lattice points on a continu

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Introduction to Causal Dynamical Triangulationse present recent results obtained within the four dimensional model of causal dynamical triangulations. We describe the phase structure of the model and demonstrate how a macroscopic four-dimensional de Sitter universe emerges dynamically from the full gravitational path integral. We show how to rec

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