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Cosmological effective Hamiltonian from full loop quantum gravity dynamics
Abstract The concept of effective dynamics has proven successful in LQC, a loop-inspired quantization of cosmological spacetimes. We apply the same idea of its derivation in LQC to the full theory,Expand
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Emergent de Sitter Epoch of the Quantum Cosmos from Loop Quantum Cosmology.
The quantum nature of the big bang is reexamined in the framework of loop quantum cosmology. The strict application of a regularization procedure to the Hamiltonian, originally developed for theExpand
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Rainbow metric from quantum gravity
Abstract In this Letter, we describe a general mechanism for emergence of a rainbow metric from a quantum cosmological model. This idea is based on QFT on a quantum spacetime. Under generalExpand
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QFT on quantum spacetime: a compatible classical framework
(Dated: May 21, 2013)We develop a systematic classical framework to accommodate canonical quantization of geomet-ric and matter perturbations on a quantum homogeneous isotropic flat spacetime. TheExpand
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Smooth Big Bounce from Affine Quantization
We examine the possibility of dealing with gravitational singularities on a quantum level through the use of coherent state or wavelet quantization in- stead of canonical quantization. We considerExpand
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Cosmological Coherent State Expectation Values in LQG I. Isotropic Kinematics
This is the first paper of a series dedicated to LQG coherent states and cosmology. The concept is based on the effective dynamics program of Loop Quantum Cosmology, where the classical dynamicsExpand
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Cosmological coherent state expectation values in loop quantum gravity I. Isotropic kinematics
This is the first paper of a series dedicated to LQG coherent states and cosmology. The concept is based on the effective dynamics program of Loop Quantum Cosmology, where the classical dynamicsExpand
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Smooth Bounce in Affine Quantization of Bianchi I
We present the affine coherent state quantization of the Bianchi I model. As in our previous paper on quantum theory of Friedmann models, we employ a variable associated with a perfect fluid to playExpand
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Loop Quantum Gravity on lattice: toward effective dynamics
D ec 2 01 9 Challenges in recovering a consistent cosmology from the effective dynamics of loop quantum gravity
We reexamine a set of existing procedures aimed at recovering the effective description of the dynamics of LQG in the context of cosmological solutions. In particular, the studies of those methods,Expand