Results 51 to 60 of about 1,530,241 (273)
Classical and Quantum Solutions and the Problem of Time in $R^2$ Cosmology [PDF]
, 1995 We have studied various classical solutions in $R^2$ cosmology. Especially we have obtained general classical solutions in pure $R^2$\ cosmology. Even in the quantum theory, we can solve the Wheeler-DeWitt equation in pure $R^2$\ cosmology exactly ...
Banks T +22 more
core +3 more sources
Modular quantum cosmology [PDF]
Classical and Quantum Gravity, 1999 Latex, 23 pages, 1 figure.
Ricardo Schiappa, Orfeu Bertolami
openaire +4 more sources
Quantum Gravity Effects in Cosmology
EPJ Web of Conferences, 2018 Within the geometrodynamic approach to quantum cosmology, we studied the quantum gravity effects in cosmology. The Gibbons-Hawking temperature is corrected by quantum gravity due to spacetime fluctuations and the power spectrum as well as any probe field
Gu Je-An, Pyo Kim Sang, Shen Che-Min
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Effective Field Theory of Loop Quantum Cosmology
Universe, 2019 Quantum cosmology is traditionally formulated in a minisuperspace setting, implicitly averaging fields over space to obtain homogeneous models. For universal reasons related to the uncertainty principle, quantum corrections then depend on the size of the
Martin Bojowald
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Pytanie o jedność nauki na przykładzie kosmologii antropicznej
Studia Philosophiae Christianae, 2023 Given the ongoing process of the differentiation of sciences, it is worth posing a question about the possibility of them being integrated. This matter will be explored with reference to anthropic cosmology.
Sławomir Leciejewski
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The Semiclassical Limit of Loop Quantum Cosmology [PDF]
, 2001 The continuum and semiclassical limits of isotropic, spatially flat loop quantum cosmology are discussed, with an emphasis on the role played by the Barbero-Immirzi parameter \gamma in controlling space-time discreteness.
Ashtekar A +20 more
core +3 more sources
On the holographic basis of loop quantum cosmology
European Physical Journal C: Particles and Fields, 2018 In this work, we obtain the loop quantum cosmology dynamical equations, plus a positive cosmological constant, from the Bekenstein–Hawking entropy-area relation given by Loop Quantum Black Holes, by the use of the Jacobson formalism (Phys Rev Lett 75 ...
C. A. S. Silva
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Observations in quantum cosmology
Classical and Quantum Gravity, 2023 AbstractIn this review, we focus on whether a canonical quantization of general relativity can produce testable predictions for cosmology. In particular, we examine how this approach can be used to model the evolution of primordial perturbations.
Leonardo Chataignier +2 more
openaire +2 more sources
Data‐Driven Review on Aerogels and Polymeric Aerogels
Angewandte Chemie, EarlyView.A review goes to data‐driven. An exhaustive literature survey provides an overview of research status on aerogels, a category of highly porous solids with unique physicochemical properties. Statistical/data‐driven analysis tells us positive/negative aspects; aerogels have a promising potential to contribute to emerging energy/environmental issues ...
Satoru Takeshita +2 more
wiley +2 more sources
Correspondence between dark energy quantum cosmology and Maxwell equations
European Physical Journal C: Particles and Fields, 2019 A Friedmann–Robertson–Walker cosmology with dark energy can be modelled using a quintessence field. That system is equivalent to a relativistic particle moving on a two-dimensional conformal spacetime.
Felipe A. Asenjo, Sergio A. Hojman
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