Results 91 to 100 of about 8,579 (263)

Observational Constraints on Loop Quantum Cosmology

open access: yesPhysical Review Letters, 2011
In the inflationary scenario of loop quantum cosmology in the presence of inverse-volume corrections, we give analytic formulas for the power spectra of scalar and tensor perturbations convenient to compare with observations. Since inverse-volume corrections can provide strong contributions to the running spectral indices, inclusion of terms higher ...
Bojowald, M.   +2 more
openaire   +5 more sources

Timing the Sacred: A Multi‐Step Chronological Framework for the Llullaillaco Inca Burial

open access: yesArchaeometry, EarlyView.
ABSTRACT Absolute radiocarbon dating offers high precision, but its application to historical contexts, such as the Inca civilization, requires a rigorous methodological approach. This research examines methods to enhance chronological accuracy through a case study of artifacts from the Llullaillaco Capacocha sacrifice.
Dominika Sieczkowska‐Jacyna   +9 more
wiley   +1 more source

Topology‐based Visual Analysis of Hydrothermal Plumes

open access: yesComputer Graphics Forum, EarlyView.
Abstract Hydrothermal plumes are turbulent structures of intense heat and mineral smoke that rise and disperse into the deep ocean. Existing models generally characterize these systems as a single axisymmetric plume originating from a point source. However, this assumption breaks down in weakly venting, spatially distributed systems, where low‐flux ...
Adhitya Kamakshidasan   +3 more
wiley   +1 more source

The basic theory underlying the quasi-steady state cosmology [PDF]

open access: yes, 1994
Outside cosmology, the procedure normally followed in science requires the integration of hyperbolic partial differential equations subject to initial data given on a free surface, which is usually taken to be a time section of spacetime.
Hoyle, F   +5 more
core   +1 more source

Scalable Computation of Topological Abstractions for Scalar Data

open access: yesComputer Graphics Forum, EarlyView.
Abstract Topological data analysis has become an important tool for large scale scalar data analysis and visualization, efficiently extracting the inherent structure and features of interest of the data. However, with growing dataset sizes and complexity, it is increasingly becoming infeasible to compute topological abstractions of interest in serial ...
M. Will   +6 more
wiley   +1 more source

Un/Learning Adult Frames of Reference in Death Enquiries: Thinking~With a Picturebook, Philosophical Animism and Ontological Tact

open access: yesChildren &Society, EarlyView.
ABSTRACT Developmental psychology continues to shape how adults engage with children about death and dying. This influences whether children are included in rituals surrounding human and other‐than‐human bodies. Figurations of the innocent, immature and vulnerable child still dominate adult imaginaries of young children's understandings of mortality ...
Karin Murris   +2 more
wiley   +1 more source

Discord in Concordance Cosmology and Anomalously Massive Early Galaxies [PDF]

open access: yes
Cosmological parameters are constrained by a wide variety of observations. We examine the concordance diagram for modern measurements of the Hubble constant, the shape parameter from large scale structure, the cluster baryon fraction, and the age of the ...
McGaugh, Stacy S.   +2 more
core   +2 more sources

Similar or Different? Configurations of Authenticity Across Museum Types

open access: yesCurator: The Museum Journal, EarlyView.
ABSTRACT Authenticity is traditionally regarded as playing a crucial role in museums, science centers, and memorials. However, despite this fact, authenticity has very different meanings in different (institutional) settings. This complicates shared communications across museum practices.
S. Schwan   +18 more
wiley   +1 more source

A common origin for parity-violating signatures in Cosmology? [PDF]

open access: yes
reservedRecent measurements of non-vanishing cross-spectra between the E and the B polarization modes of the Cosmic Microwave Background (CMB) have been interpreted as the rotation of the CMB linear polarization plane during propagation from the last ...
DI SARCINA, ANDREA
core  

Quintom cosmology: Theoretical implications and observations [PDF]

open access: yes, 2010
We review the paradigm of quintom cosmology. This scenario is motivated by the observational indications that the equation-of-state of dark energy across the cosmological constant boundary is mildly favored, although the data are still far from being ...
Saridakis, E.N.   +3 more
core  

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