Results 21 to 30 of about 39,698 (245)
Generic absence of strong singularities and geodesic completeness in modified loop quantum cosmologies [PDF]
, 2019 Different regularizations of the Hamiltonian constraint in loop quantum cosmology yield modified loop quantum cosmologies, namely mLQC-I and mLQC-II, which lead to qualitatively different Planck scale physics.
Saini, Sahil, Singh, Parampreet
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Unimodular Loop Quantum Cosmology [PDF]
Physical Review D, 2010 Unimodular gravity is based on a modification of the usual Einstein-Hilbert action that allows one to recover general relativity with a dynamical cosmological constant.
A. Ashtekar +12 more
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Loop Quantum Cosmology I: Kinematics [PDF]
Classical and Quantum Gravity, 1999 The framework of quantum symmetry reduction is applied to loop quantum gravity with respect to transitively acting symmetry groups. This allows to test loop quantum gravity in a large class of minisuperspaces and to investigate its features - e.g.
Ashtekar A +22 more
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European Physical Journal C: Particles and Fields, 2019 Mimetic gravity can be described as a formulation capable of mimicking different evolutionary scenarios regarding the universe dynamics. Notwithstanding its initial aim of producing a similar evolution to the one expected from the dark components of the ...
Eunice Bezerra, Oswaldo D. Miranda
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Mathematical Structure of Loop Quantum Cosmology: Homogeneous Models [PDF]
Symmetry, Integrability and Geometry: Methods and Applications, 2013 The mathematical structure of homogeneous loop quantum cosmology is analyzed, starting with and taking into account the general classification of homogeneous connections not restricted to be Abelian.
Martin Bojowald
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Loop Quantum Cosmology: Recent Progress [PDF]
Pramana, 2004 Aspects of the full theory of loop quantum gravity can be studied in a simpler context by reducing to symmetric models like cosmological ones. This leads to several applications where loop effects play a significant role when one is sensitive to the ...
A Ashtekar +35 more
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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
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A novel link between Wheeler-DeWitt quantization and (effective) loop quantum cosmology
Physics Letters BIt is shown that several prescriptions for the effective continuum limit of the flat Friedmann-Lemaitre-Robertson-Walker loop quantum cosmology can be understood as the exact classical limit of the Wheeler-DeWitt quantization of certain dynamical systems,
Abraham Espinoza-García
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Non-standard loop quantum cosmology [PDF]
Annalen der Physik, 2010 AbstractWe present results concerning the nature of the cosmological big bounce (BB) transition within the loop geometry underlying loop quantum cosmology (LQC). Our canonical quantization method is an alternative to the standard LQC. An evolution parameter we use has clear interpretation both at classical and quantum levels.
W. Piechocki
openalex +3 more sources
Non-Gaussianity in loop quantum cosmology [PDF]
Physical Review D, 2018 Minor updates: current version matches the accepted PRD ...
Iván Agulló +2 more
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