Results 31 to 40 of about 15,499 (146)
The No-defect Conjecture: Cosmological Implications [PDF]
, 1998 When the topology of the universe is non trivial, it has been shown that there are constraints on the network of domain walls, cosmic strings and monopoles.
A. de Oliveira Costa +30 more
core +2 more sources
A STRAINED SPACE-TIME TO EXPLAIN THE LARGE SCALEPROPERTIES OF THE UNIVERSE [PDF]
, 2011 Space-time can be treated as a four-dimensional material continuum. The corresponding generally curved manifold can be thought of as having been obtained, by continuous deformation, from a four-dimensional Euclidean manifold.
Eshelby J. D. +5 more
core +1 more source
Topological‐defect‐featured order evolution of liquid crystals
Responsive Materials, EarlyView.This review provides a comprehensive introduction to the recent advances in the topological‐defect‐featured order evolution of liquid crystal (LCs), including the stimulus‐driven dynamics of defects in nematic LCs, topological defect morphological transformation during phase transitions, advanced strategies for regulating and applications of ...
Jin‐Bing Wu +4 more
wiley +1 more source
Cosmic Microwave Background Anisotropies from Global Texture [PDF]
, 1999 We investigate the global texture model of structure formation in cosmogonies with non-zero cosmological constant for different values of the Hubble parameter.
Durrer, Ruth +2 more
core +2 more sources
Anthropology of Consciousness, EarlyView.ABSTRACT Combining different theoretical frameworks can lead to new insights into the role of material things in shaping human experience in the Paleolithic period. This paper first presents a historical review of three theoretical approaches in archaeology, anthropology, and the philosophy of mind: Material culture and materiality studies, the ...
Bar Efrati
wiley +1 more source
The Cosmological Slingshot Scenario: a Stringy Proposal for the Early Time Cosmology [PDF]
, 2008 In the Cosmological Slingshot Scenario, our Universe is a D3-brane that extends in the 4d noncompact directions of a warped Calabi-Yau compactification of IIB Supergravity.
Alex Kehagias +6 more
core +2 more sources
Meteoritics &Planetary Science, EarlyView.Abstract We report new results from a study of shock‐related features in the L6 ordinary chondrites Northwest Africa (NWA) 4672 and NWA 12841. Our observations confirm the occurrence of eight high‐pressure (HP) minerals in each meteorite, namely, ringwoodite, majorite, akimotoite, wadsleyite, albitic jadeite, lingunite, tuite, and xieite.
I. Baziotis +5 more
wiley +1 more source
Cosmic Microwave Background non-Gaussian signatures from analytical texture models [PDF]
, 1996 Using an analytical model for the Cosmic Microwave Background anisotropies produced by textures, we compute the resulting collapsed three--point correlation function and the {\it rms} expected value due to the cosmic variance.
Gangui, Alejandro, Mollerach, Silvia
core +4 more sources
Vertical profiling of shock attenuation at the Rochechouart impact structure, France
Meteoritics &Planetary Science, EarlyView.Abstract Rochechouart, south‐west France, is a complex impact structure. Here, we present the first report of shock barometry of quartz from what are likely parautochthonous basement units at depth, based on samples from the 2017 C.I.R.I.R drilling campaign. The crystallographic orientations of 725 sets of PDFs in 512 quartz grains in samples from four
P. Struzynska +4 more
wiley +1 more source
An ansatz for spacetimes of zero gravitational mass : global monopoles and textures
, 1997 We propose a geometric ansatz, a restriction on Euclidean / Minkowski distance in the embedding space being propotional to distance in the embedded space, to generate spacetimes with vanishing gravitational mass ($R_{ik} u^i u^k = 0, u_i u^i = 1 $).
A. Vilenkin +13 more
core +1 more source