Results 91 to 100 of about 38,508 (240)
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
core +3 more sources
The picture of the Bianchi I model via gauge fixing in Loop Quantum Gravity
, 2012 The implications of the SU(2) gauge fixing associated with the choice of invariant triads in Loop Quantum Cosmology are discussed for a Bianchi I model.
A. Marchini +16 more
core +1 more source
Mathematical Structure of Loop Quantum Cosmology: Homogeneous Models
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
doaj +1 more source
Critical Evaluation of Common Claims in Loop Quantum Cosmology
Universe, 2020 A large number of models have been analyzed in loop quantum cosmology, using mainly minisuperspace constructions and perturbations. At the same time, general physics principles from effective field theory and covariance have often been ignored.
Martin Bojowald
doaj +1 more source
Probability of inflation in loop quantum cosmology [PDF]
General Relativity and Gravitation, 2011 34 pages, 3 ...
David Sloan, David Sloan, Abhay Ashtekar
openaire +5 more sources
Journal of Geophysical Research: Planets, Volume 130, Issue 7, July 2025.Abstract The geology of a potential Artemis landing site on Mons Malapert is examined using remote sensing techniques and lessons learned from Apollo missions to the lunar surface. Orthomosaics, digital terrain models, illumination models, thermal conditions, crater size‐frequency distribution analyses, geomorphological mapping, spectral and ...
David A. Kring +21 more
wiley +1 more source
On the Hamiltonian Constraint of Loop Quantum Cosmology
, 2005 In this paper we construct the Hamiltonian constraint operator of loop quantum cosmology using holonomies defined for arbitrary irreducible SU(2) representations labeled by spin J.
A. Ashtekar +5 more
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.
openaire +3 more sources
Christian Bohr. Discoverer of Homotropic and Heterotopic Allostery
Acta Physiologica, Volume 241, Issue S734, July 2025.ABSTRACT This essay recounts and revisits the scientific contributions of Christian Bohr, highlighting his pivotal role in discovering allostery about 120 years ago. Bohr's meticulous experimentation led to identifying two distinct forms of allostery: homotropic (single‐ligand) and heterotropic (multi‐ligand), the latter widely recognized as the Bohr ...
Niels Bindslev
wiley +1 more source
Numerical Techniques in Loop Quantum Cosmology
Symmetry, Integrability and Geometry: Methods and Applications, 2012 In this article, we review the use of numerical techniques to obtain solutions for the quantum Hamiltonian constraint in loop quantum cosmology (LQC).
David Brizuela +2 more
doaj +1 more source