Results 111 to 120 of about 6,202 (230)

Classical and quantum dispersion in Robertson–Walker cosmologies [PDF]

, 1993
Roman Tomaschitz
openalex   +1 more source

Quantum BPS cosmology

Classical and Quantum Gravity
Abstract There has been much discussion about the initial conditions of the early Universe in the context of quantum theory. In this paper, we construct the wave function and probability distribution by adopting the quantum version of the BPS equation instead of the usual Wheeler–DeWitt equation in a minisuperspace quantum cosmology with
Nahomi Kan, Kiyoshi Shiraishi, Maki Takeuchi, Mai Yashiki   +3 more
openaire   +2 more sources

A novel link between Wheeler-DeWitt quantization and (effective) loop quantum cosmology

Physics Letters B
It 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
doaj   +1 more source

Spatially flat quantum cosmology [PDF]

, 1991
Jorma Louko, P.J. Ruback
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Towards energy discretization in quantum cosmology. [PDF]

Heliyon, 2019
Fernandes AS, Amorim RGG, Capistrano AJS, Ulhoa SC.   +3 more
europepmc   +1 more source

Cosmological constant from canonical transformation in quantum cosmology

Nuclear Physics B
We explore the introduction of the cosmological constant via canonical transformations in cosmology. We consider the Wheeler-DeWitt equation for the cold dark matter (CDM) universe and we construct the Hamilton-Jacobi action for the ΛCDM model, where Λ ...
Andronikos Paliathanasis
doaj   +1 more source

Erratum: Comment on "Comment on `Quantum cosmology and the initial state of the universe' " [PDF]

, 1991
Karl Svozil
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Applications of a new proposal for solving the ‘‘problem of time’’ to some simple quantum cosmological models [PDF]

, 1995
Atsushi Higuchi, Robert M. Wald
openalex   +1 more source

Quantum cosmology in scalar-tensor theories with non-minimal coupling [PDF]

, 1999
J. C. Fabris, Nelson Pinto-Neto, A. F. Velasco   +2 more
openalex   +1 more source

Quantum field theory with and without conical singularities: black holes with a cosmological constant and the multi-horizon scenario [PDF]

, 1999
Feng-Li Lin, Chopin Soo
openalex   +1 more source