Results 81 to 90 of about 6,695,532 (296)
States of low energy in the Schwinger effect
Journal of High Energy Physics, 2023 States of low energy in cosmology minimise the energy density when smeared in a chosen time interval. We extend such construction to generic homogeneous (possibly anisotropic) particle creation settings.
Álvaro Álvarez-Domínguez +3 more
doaj +1 more source
Journal of Quaternary Science, EarlyView.ABSTRACT The timing and spatial patterns of glaciers retreat in the Northern French Alps during the Lateglacial (19.0–11.7 ka) remain debated, reflecting discrepancies among available chronological data sets. The complex interactions between major glaciers, such as the Rhône and Arve glaciers to the north and the Isère glacier to the south, represent a
Quentin Portal +3 more
wiley +1 more source
Observational Cosmology in Macroscopic Gravity [PDF]
, 2013 This version deposited at arXiv 25-10-12 arXiv:1209.1085v2. Subsequently published in Journal of Cosmology and Astroparticle Physics as Timothy Clifton et al JCAP10(2012)044 doi:10.1088/1475-7516/2012/10/044.
Hoogen, RVD, Clifton, T, Coley, A
core +1 more source
MULTIVERSE COSMOLOGICAL MODELS
Modern Physics Letters A, 2004 Recent advances in string theory and inflationary cosmology have led to a surge of interest in the possible existence of an ensemble of cosmic regions, or "universes", among the members of which key physical parameters, such as the masses of elementary particles and the coupling constants, might assume different values.
openaire +2 more sources
Journal of Quaternary Science, EarlyView.ABSTRACT Glaciokarst landscapes pose distinctive challenges for cosmogenic dating because meltwater and runoff can be rapidly rerouted into ponors and conduit networks, weakening glacier–river coupling and promoting local sediment storage. We reconstruct glacier retreat and postglacial stabilization on the Snežnik Plateau (SW Slovenia) using in situ ...
Onur Altınay +6 more
wiley +1 more source
Journal of Quaternary Science, EarlyView.ABSTRACT The Cadí Massif (42°17′09″ N, 1°38′11″ E; 2649 m a.s.l.) in the southeastern Pyrenees preserves clear evidence of Late Pleistocene glaciation, although previous research has focused almost exclusively on its northern slope. By contrast, the southern slope has remained largely unexplored.
M. Oliva +5 more
wiley +1 more source
European Physical Journal C: Particles and FieldsIn this work, we studied four types of cosmological models with different mechanisms driving the accelerated expansion of the universe, include Braneworld models, Chaplygin Gas models, Emergent Dark Energy models, and cosmological torsion models ...
Ziqiang Liu +4 more
doaj +1 more source
A talus rock glacier in Nantlle Valley, North Wales
Journal of Quaternary Science, EarlyView.ABSTRACT Landforms comprising mixtures of fine and coarse sediment and deposited during late glacial times are ubiquitous in the British mountains. In many cases, their interpretation has often proved contentious; as a result, the non‐generic term discrete debris accumulations (DDA) has been used to describe them and, over the last 50 years, some have ...
Stephan Harrison, Ed Anderson
wiley +1 more source
Journal of High Energy PhysicsThe textbook N=1 supergravity has an F-term potential depending on a superpotential W (z i ) and a Kähler potential K z i z ¯ i ¯ $$ K\left({z}^i,{\overline{z}}^{\overline{i}}\right) $$ , with the scalar potential V z i z ¯ i ¯ $$ V\left({z}^i,{\overline{
Renata Kallosh, Andrei Linde
doaj +1 more source
Observações sobre as soluções clássicas da equação de Friedmann
Revista Brasileira de Ensino de FísicaAs representações gráficas dos modelos clássicos de Friedmann frequentemente induzem ao erro, na discussão das idades dos universos-modelo. A maioria dos livros ignora as diferentes conceituais das representações no que diz respeito a estas idades ...
Arthur Viglioni, Domingos Soares
doaj +1 more source