Results 61 to 70 of about 39,130 (174)
Bounce Loop Quantum Cosmology Corrected Gauss-Bonnet Gravity
, 2015 We develop a Gauss-Bonnet extension of Loop Quantum Cosmology, by introducing holonomy corrections in modified $F(\mathcal{G})$ theories of gravity.
Haro, J. +4 more
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Loop cosmological dynamics and dualities with Randall-Sundrum braneworlds [PDF]
, 2006 The discrete quantum geometric effects play an important role in dynamical evolution in the loop quantum cosmology. These effects which are significant at the high energies lead to the quadratic energy density modifications to the Friedmann equation, as ...
A. Ashtekar +6 more
core +3 more sources
Qualitative study in loop quantum cosmology [PDF]
Classical and Quantum Gravity, 2017 This work contains a detailed qualitative analysis, in General Relativity and in Loop Quantum Cosmology, of the dynamics in the associated phase space of a scalar field minimally coupled with gravity, whose potential mimics the dynamics of a perfect fluid with a linear Equation of State (EoS).
Aresté Saló, Llibert +2 more
openaire +4 more sources
Supersymmetric minisuperspace models in self-dual loop quantum cosmology
Journal of High Energy Physics, 2021 In this paper, we study a class of symmetry reduced models of N $$ \mathcal{N} $$ = 1 super- gravity using self-dual variables. It is based on a particular Ansatz for the gravitino field as proposed by D’Eath et al. We show that the essential part of the
K. Eder, H. Sahlmann
doaj +1 more source
DeWitt Boundary Condition in One-Loop Quantum Cosmology
Universe, 2023 DeWitt’s suggestion that the wave function of the universe should vanish at the classical Big Bang singularity is considered here within the framework of one-loop quantum cosmology.
Giampiero Esposito
doaj +1 more source
Symmetry Reduction of Loop Quantum Gravity
, 2011 The relation between standard Loop Quantum Cosmology and full Loop Quantum Gravity fails already at the first nontrivial step: The configuration space of Loop Quantum Cosmology can not be embedded into the configuration space of full Loop Quantum Gravity
Brunnemann, Johannes, Koslowski, Tim A.
core +1 more source
Quantum-reduced loop gravity: Cosmology [PDF]
Physical Review D, 2013 26 pages, typo corrected in eq.(114)
ALESCI, Emanuele, Cianfrani F.
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Quantum Gravitational Non-Singular Tunneling Wavefunction Proposal
Physical Sciences Forum, 2023 It has recently been shown that the tunneling wavefunction proposal is consistent with loop quantum geometry corrections, including both holonomy and inverse scale factor corrections, in the gravitational part of a spatially closed isotropic model with a
Meysam Motaharfar, Parampreet Singh
doaj +1 more source
Loop quantum cosmology gravitational baryogenesis [PDF]
EPL (Europhysics Letters), 2016 Loop Quantum Cosmology is an appealing quantum completion of classical cosmology, which brings along various theoretical features which in many cases offer remedy or modify various classical cosmology aspects. In this paper we address the gravitational baryogenesis mechanism in the context of Loop Quantum Cosmology. As we demonstrate, when Loop Quantum
Odintsov, S. D., Oikonomou, V. K.
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Loop Quantum Cosmology: A cosmological theory with a view
Journal of Physics: Conference Series, 2011 Loop Quantum Gravity is a background independent, nonperturbative approach to the quantization of General Relativity. Its application to models of interest in cosmology and astrophysics, known as Loop Quantum Cosmology, has led to new and exciting views of the gravitational phenomena that took place in the early universe, or that occur in spacetime ...
openaire +3 more sources