Results 21 to 30 of about 15,594 (146)

Neutrino mass textures with one vanishing minor and two equal cofactors

, 2013
In this paper, we carry out a numerical and systematic analysis of the neutrino mass textures, which contain one vanishing minor and an equality between two cofactors.
Wang, Weijian
core   +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, Kunz, Martin, Melchiorri, Alessandro   +2 more
core   +2 more sources

Topological Defects in an Open Universe [PDF]

, 1994
(To appear in Nuclear Physics B Supplements Proceedings section) This talk will explore the evolution of topological defects in an open universe. The rapid expansion of the universe in an open model slows defects and suppresses the generation of CBR ...
Albrecht, Albrecht, Allen, Bardeen, Bardeen, Barriol, Baugh, Bennett, Bennett, Bennett, Bennett, Cheng, D.N. Spergel, Davis, Dekel, Deliyannis, Devlin, Dragovan, Fisher, Ganga, Geller, Gooding, Gouda, Gould, Hughes, Jacoby, Jaffe, Kibble, Kodama, Lahav, Melott, Nagasawa, Ostriker, Peebles, Peebles, Pen, Perivolaropoulos, Press, Press, Regos, Sachs, Spergel, Spergel, Turok, Turok, U. Pen, Vachaspati, Vilenkin, Vogeley, Walker, Watson, White, Wilson, Wollack, Wright, Wright   +55 more
core   +3 more sources

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, A. Guth, C. J. Isham, C. L. Bennett, D. Lyth, D. Stevens, E. P. S. Shellard, G. D. Mostow, G. F. R. Ellis, G. F. R. Ellis, G. Prasad, J-P. Uzan, J-P. Uzan, J. J. Levin, Jean-Philippe Uzan, M. Kamionkowski, M. Lachièze-Rey, M. Panek, N. Deruelle, N. J. Cornish, N. J. Cornish, N. J. Cornish, N. Turok, P. J. E Peebles, P. J. Steinhardt, R. K. Sachs, R. Lehoucq, T. W. B. Kibble, U. Seljak, V. F. Mukhanov, W. Rindler   +30 more
core   +2 more sources

The isotropisation of cosmological textures

Physics Letters B, 1993
Abstract Cosmological textures are known from numerical experiments to isotropise as they collapse. This article studies general energy configurations having the same form of energy density as do textures. Straightforward arguments based on an extension of Derrick's theorem lead to the conclusion that textures isotropise because they lose energy in ...
openaire   +1 more source

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., Kokarev S. S., Pavšič M., Sakharov A. D., Tartaglia A., Volterra V.   +5 more
core   +1 more source

Past, present and future of local crop evolution

PLANTS, PEOPLE, PLANET, EarlyView.
Promoting agrobiodiversity is a promising strategy for mitigating the negative effects of climate change on global food security. We highlight the central role evolutionary processes play in harnessing the potential of local crops by integrating genomics, archaeology, ethnobotany and traditional ecological knowledge (TEK).
Nataly Allasi Canales, Philippa Ryan, Amy Jackson, Hong Phuong Le, James Borrell, Aaron Davis, Rafal M. Gutaker   +6 more
wiley   +1 more source

Creating vortons and three-dimensional skyrmions from domain wall annihilation with stretched vortices in Bose-Einstein condensates [PDF]

, 2012
We propose a mechanism to create a vorton or three-dimensional skyrmion in phase-separated two-component BECs with the order parameters Psi_1 and Psi_2 of the two condensates.
Kasamatsu, Kenichi, Nitta, Muneto, Takeuchi, Hiromitsu, Tsubota, Makoto   +3 more
core   +2 more sources

Amidst (waste) abundance: world‐making and struggles in hosting a municipal landfill in the Bolivian lowlands Au milieu de l'abondance (de déchets) : fabrication du monde et luttes liées à la gestion d'une décharge municipale dans les basses terres de Bolivie

Journal of the Royal Anthropological Institute, EarlyView.
In recent decades, solid waste has proliferated worldwide, becoming a pressing global issue. This article explores the role of Indigenous people dwelling within and upon emerging waste scenarios, with a specific focus on involved forms of sociality and ontological contestation. Drawing on the case of a municipal landfill sited on a Guarani community in
Vanesa Martín Galán
wiley   +1 more source

Beyond the Small-Angle Approximation For MBR Anisotropy from Seeds

, 1994
In this paper we give a general expression for the energy shift of massless particles travelling through the gravitational field of an arbitrary matter distribution as calculated in the weak field limit in an asymptotically flat space-time.
A. Stebbins, A. Vilenkin, A. Vilenkin, Albert Stebbins, G. Smoot, G. Smoot, J. Borrill, J. Borrill, J. Borrill et al., J. Gott, J. Notzold, J. Peebles, M. Hindmarsh, M. Wilson, N. Kaiser, N. Turok, N. Turok, R. Sachs, S. Veeraraghavan, Shoba Veeraraghavan   +19 more
core   +1 more source