Results 21 to 30 of about 75,052 (218)
Introduction to Loop Quantum Cosmology [PDF]
Symmetry, Integrability and Geometry: Methods and Applications, 2012 This is an introduction to loop quantum cosmology (LQC) reviewing mini- and midisuperspace models as well as homogeneous and inhomogeneous effective dynamics.
Kinjal Banerjee +2 more
doaj +7 more sources
Higher dimensional Loop Quantum Cosmology [PDF]
The European Physical Journal C, 2015 Loop quantum cosmology(LQC) is the symmetric model of loop quantum gravity. In this paper, we generalize the structure of loop quantum cosmology to the theories with arbitrary spacetime dimensions.
Zhang, Xiangdong
core +4 more sources
Inflation in loop quantum cosmology [PDF]
Physical Review D, 2018 We develop a consistent analytic approach to determine the conditions under which slow roll inflation can arise when the inflaton is the same scalar field that is responsible for the bounce in Loop Quantum Cosmology (LQC).
A. Bhardwaj, E. Copeland, J. Louko
semanticscholar +5 more sources
Editorial: Loop Quantum Cosmology
Frontiers in Astronomy and Space Sciences, 2022 3 pags. Editorial on the Research Topic 3 pags. This work was partially supported by Project No. MICINN PID2020-118159GB-C41 from Spain. BE acknowledges financial support from the Standard Program of JSPS Postdoctoral Fellowships for Research in Japan. FV acknowledges financial support from by the Canada Research Chairs Program, the
Beatriz Elizaga Navascués +3 more
doaj +3 more sources
Loop quantum cosmology: a status report [PDF]
, 2011 Loop quantum cosmology (LQC) is the result of applying principles of loop quantum gravity (LQG) to cosmological settings. The distinguishing feature of LQC is the prominent role played by the quantum geometry effects of LQG.
A. Ashtekar, Parampreet Singh
semanticscholar +5 more sources
On the physical Hilbert space of loop quantum cosmology [PDF]
, 2005 In this paper we present a model of Riemannian loop quantum cosmology with a self-adjoint quantum scalar constraint. The physical Hilbert space is constructed using refined algebraic quantization.
Karim Noui +2 more
openalex +3 more sources
Absence of a Singularity in Loop Quantum Cosmology [PDF]
Physical Review Letters, 2001 It is shown that the cosmological singularity in isotropic minisuperspaces is naturally removed by quantum geometry. Already at the kinematical level, this is indicated by the fact that the inverse scale factor is represented by a bounded operator even though the classical quantity diverges at the initial singularity.
Martin Bojowald
openalex +5 more sources
Loop quantum gravity and cosmological constant
Physics Letters B, 2021 A one-parameter regularization freedom of the Hamiltonian constraint for loop quantum gravity is analyzed. The corresponding spatially flat, homogenous and isotropic model includes the two well-known models of loop quantum cosmology as special cases. The
Xiangdong Zhang, Gaoping Long, Yongge Ma
doaj +4 more sources
Inflationary universe in loop quantum cosmology [PDF]
, 2007 Loop quantum cosmology provides a nice solution of avoiding the big bang singularity through a big bounce mechanism in the high energy region. In loop quantum cosmology an inflationary universe is emergent after the big bounce, no matter what matter ...
Xin Zhang, Yi Ling
openalex +3 more sources
Loop quantum cosmology: relation between theory and observations [PDF]
, 2023 This chapter provides a review of the frameworks developed for cosmological perturbation theory in loop quantum cosmology, and applications to various models of the early universe including inflation, ekpyrosis and the matter bounce, with an emphasis on ...
I. Agulló +2 more
semanticscholar +1 more source