Results 11 to 20 of about 8,579 (263)
Cosmology with the Laser Interferometer Space Antenna [PDF]
, 2023 The Laser Interferometer Space Antenna (LISA) has two scientific objectives of cosmological focus: to probe the expansion rate of the universe, and to understand stochastic gravitational-wave backgrounds and their implications for early universe and ...
LISA Cosmology Working Grp
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Modulated reheating and large non-gaussianity in string cosmology [PDF]
, 2012 A generic feature of the known string inflationary models is that the same physics that makes the inflaton lighter than the Hubble scale during inflation often also makes other scalars this light.
CICOLI, MICHELE +9 more
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Observations in quantum cosmology
Classical and Quantum Gravity, 2023 Abstract In 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. This program of quantum geometrodynamics, first advocated by John Wheeler and Bryce DeWitt,
Leonardo Chataignier +2 more
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Machine learning for observational cosmology
Reports on Progress in Physics, 2023 Abstract An array of large observational programs using ground-based and space-borne telescopes is planned in the next decade. The forthcoming wide-field sky surveys are expected to deliver a sheer volume of data exceeding an exabyte.
Kana Moriwaki +2 more
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Predicting cosmological observables with PyCosmo
Astronomy and Computing, 2021 Astronomy and Computing ...
Federica Tarsitano +9 more
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Cosmic Tangle: Loop Quantum Cosmology and CMB Anomalies [PDF]
, 2021 Loop quantum cosmology is a conflicted field in which exuberant claims of observability coexist with serious objections against the conceptual and physical viability of its current formulations.
Martin Bojowald
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Critical Evaluation of Common Claims in Loop Quantum Cosmology [PDF]
, 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
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Interpreting the HI 21-cm cosmology maps through Largest Cluster Statistics -- I: Impact of the synthetic SKA1-Low observations [PDF]
, 2023 We analyse the evolution of the largest ionized region using the topological and morphological evolution of the redshifted 21-cm signal coming from the neutral hydrogen distribution during the different stages of reionization.
Sohini Dutta +29 more
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Space and observers in cosmology [PDF]
Astronomy & Astrophysics, 2001 I provide a prescription to define space, at a given moment, for an arbitrary observer in an arbitrary (sufficiently regular) curved space-time. This prescription, based on synchronicity (simultaneity) arguments, defines a foliation of space-time, which corresponds to a family of canonically associated observers.
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