Results 51 to 60 of about 75,052 (218)
Emergent de Sitter Epoch of the Quantum Cosmos from Loop Quantum Cosmology. [PDF]
Physical Review Letters, 2018 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 the Hamiltonian in loop quantum gravity, leads to a qualitative
Mehdi Assanioussi +3 more
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Observational constraints on warm inflation in loop quantum cosmology [PDF]
Journal of Cosmology and Astroparticle Physics, 2019 By incorporating quantum aspects of gravity, Loop Quantum Cosmology (LQC) provides a self-consistent extension of the inflationary scenario, allowing for modifications in the primordial inflationary power spectrum with respect to the standard General ...
M. Benetti, L. Graef, R. O. Ramos
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The Semiclassical Limit of Loop Quantum Cosmology [PDF]
, 2001 The continuum and semiclassical limits of isotropic, spatially flat loop quantum cosmology are discussed, with an emphasis on the role played by the Barbero-Immirzi parameter \gamma in controlling space-time discreteness.
Ashtekar A +20 more
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Cosmological Footprints of Loop Quantum Gravity [PDF]
Physical Review Letters, 2009 Accepted by Phys. Rev.
Julien Grain, Aurélien Barrau
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Consistent loop quantum cosmology [PDF]
Classical and Quantum Gravity, 2009 A consistent combination of quantum geometry effects rules out a large class of models of loop quantum cosmology and their critical densities as they have been used in the recent literature. In particular, the critical density at which an isotropic universe filled with a free, massless scalar field would bounce must be well below the Planck density. In
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Martín-Benito–Mena Marugán–Olmedo prescription for the Dapor-Liegener model of loop quantum cosmology [PDF]
Physical Review D, 2019 Recently, an alternative Hamiltonian constraint for Loop Quantum Cosmology has been put forward by Dapor and Liegener, inspired by previous work on regularization due to Thiemann.
Alejandro Garc'ia-Quismondo +1 more
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Loop Quantum Cosmology, Modified Gravity and Extra Dimensions
Universe, 2016 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).
Xiangdong Zhang
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Background Dynamics of Pre-inflationary Scenario in Brans-Dicke Loop Quantum Cosmology [PDF]
Communications in Theoretical Physics, 2019 Recently the background independent nonperturbative quantization has been extended to various theories of gravity and the corresponding quantum effective cosmology has been derived, which provides us with necessary avenue to explore the pre-inflationary ...
Manabendra Sharma +2 more
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Quantum Nature of the Big Bang: Improved dynamics [PDF]
, 2006 An improved Hamiltonian constraint operator is introduced in loop quantum cosmology. Quantum dynamics of the spatially flat, isotropic model with a massless scalar field is then studied in detail using analytical and numerical methods.
A. Ashtekar +11 more
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New loop quantum cosmology modifications from gauge-covariant fluxes [PDF]
Physical Review D, 2019 Loop quantum cosmology is a symmetry reduced quantization of cosmological spacetimes based on loop quantum gravity. While it has been successful in resolution of various cosmological singularities and connecting Planck scale physics to phenomenology, its
K. Liegener, Parampreet Singh
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