Bouncing loop quantum cosmology from FðTÞ gravity
نویسندگان
چکیده
Jaume Amorós,* Jaume de Haro, and Sergei D. Odintsov Departament de Matemàtica Aplicada I, Universitat Politècnica de Catalunya, Diagonal 647, 08028 Barcelona, Spain Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Spain Institut de Ciències de l’Espai (CSIC-IEEC), Campus UAB, Facultat de Ciències, Torre C5-Par-2a pl, E-08193 Bellaterra (Barcelona), Spain Tomsk State Pedagogical University, Tomsk, Russia and Eurasian National University, Astana, Kazakhstan (Received 15 April 2013; published 29 May 2013)
منابع مشابه
Bounce Loop Quantum Cosmology Corrected Gauss-Bonnet Gravity
We develop an effective Gauss-Bonnet extension of Loop Quantum Cosmology, by introducing holonomy corrections in modified F (G) theories of gravity. Within the context of our formalism, we provide a perturbative expansion in the critical density, a parameter characteristic of Loop Quantum Gravity theories, and we result in having leading order corrections to the classical F (G) theories of grav...
متن کاملPartial bibliography on theism and physical cosmology
References [1] A.Ashtekar. Loop quantumcosmology: an overview. General Relativity andGravitation, 41(4):707–741, 2009. [2] EW Barnes. Discussion on the evolution of the universe. Nature, 128(3234):719–722, 1931. [3] S.M. Barr. Modern physics and ancient faith. University of Notre Dame Press, 2003. [4] M. Bojowald. Quantum gravity and the big bang. Arxiv preprint astro-ph/0309478, 2003. [5] M. B...
متن کاملFormation and evolution of structure in loop cosmology.
Inhomogeneous cosmological perturbation equations are derived in loop quantum gravity, taking into account corrections, in particular, in gravitational parts. This provides a framework for calculating the evolution of modes in structure formation scenarios related to inflationary or bouncing models. Applications here are corrections to the Newton potential and to the evolution of large scale mo...
متن کاملCosmological vector modes and quantum gravity effects
In contrast to scalar and tensor modes, vector modes of linear perturbations around an expanding Friedmann–Robertson–Walker universe decay. This makes them largely irrelevant for late time cosmology, assuming that all modes started out at a similar magnitude at some early stage. By now, however, bouncing models are frequently considered which exhibit a collapsing phase. Before this phase reache...
متن کاملLoop Quantum Cosmology, Modified Gravity and Extra Dimensions
Loop quantum cosmology (LQC) is a framework of quantum cosmology based on the quantization of symmetry reduced models following the quantization techniques of loop quantum gravity (LQG). This paper is devoted to reviewing LQC as well as its various extensions including modified gravity and higher dimensions. For simplicity considerations, we mainly focus on the effective theory, which captures ...
متن کامل