Results 91 to 100 of about 5,429,060 (314)
String Theory and Primordial Cosmology [PDF]
, 2014 17 pages, 5 figures, published in "Springer Handbook of Spacetime", ed. by A. Ashtekar and V.
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Singularity theory in classical cosmology [PDF]
Il Nuovo Cimento B Series 11, 1992 This paper compares recent approaches appearing in the literature on the singularity problem for space-times with nonvanishing torsion.
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Coarse-grained cosmological perturbation theory [PDF]
Journal of Cosmology and Astroparticle Physics, 2012 Semi-analytical methods, based on Eulerian perturbation theory, are a promising tool to follow the time evolution of cosmological perturbations at small redshifts and at mildly nonlinear scales. All these schemes are based on two approximations: the existence of a smoothing scale and the single-stream approximation, where velocity dispersion of the ...
Pietroni, Massimo +3 more
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GHOSTLY ENCOUNTERS IN LAGOS: Virtual Reality between Urban Marketing and Media Activism
International Journal of Urban and Regional Research, EarlyView.Abstract This article examines the role of virtual reality (VR) technologies in mediating and contesting dominant visions of urban futures in West Africa. Drawing on theoretical insights from a hybridization of the work of the German‐born Jewish critic Walter Benjamin and the Nigerian writer Amos Tutuola, I introduce the concept of phantasmagoria as a ...
Hervé Roquet
wiley +1 more source
Cosmological models: Theory and observations [PDF]
Advances in Space Research, 2003 7 pages, invited talk at 33rd COSPAR Scientific Assembly (Warsaw, Poland, 16-23 July 2000), cospar.sty is ...
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Non-standard Models and the Sociology of Cosmology [PDF]
, 2013 I review some theoretical ideas in cosmology different from the standard "Big Bang": the quasi-steady state model, the plasma cosmology model, non-cosmological redshifts, alternatives to non-baryonic dark matter and/or dark energy, and others ...
Lopez-Corredoira, Martin
core
Non-Abelian discrete gauge symmetries in F-theory [PDF]
, 2016 The presence of non-Abelian discrete gauge symmetries in four-dimensional F-theory compactifications is investigated. Such symmetries are shown to arise from seven-brane configurations in genuine F-theory settings without a weak string coupling ...
Sub String Theory Cosmology and ElemPart +7 more
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Late Antique Allāh: Ancestral Arabian Religion and the Monotheistic Zeitgeist
Arabian Archaeology and Epigraphy, EarlyView.ABSTRACT This essay addresses the ongoing scholarly tension between the monotheistic interpretations of late pre‐Islamic Arabian religion, pioneered by G. Hawting and P. Crone, and the traditional accounts of rampant Arabian polytheism found in later Islamic literary sources.
Ahmad Al‐Jallad, Hythem Sidky
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Cancellation of quantum corrections on the soft curvature perturbations
Journal of High Energy PhysicsWe study the cancellation of quantum corrections on the superhorizon curvature perturbations from subhorizon physics beyond the single-clock inflation from the viewpoint of the cosmological soft theorem.
Yuichiro Tada +2 more
doaj +1 more source
Kinetic theory and classical limit for real scalar quantum field in curved spacetime [PDF]
, 2018 Starting from a real scalar quantum field theory with quartic self-interactions and nonminimal coupling to classical gravity, we define four equal-time, spatially covariant phase-space operators through a Wigner transformation of spatially translated ...
Friedrich, Pavel +4 more
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