Results 61 to 70 of about 27,431 (169)

Inflation from R^2 gravity: a new approach using nonlinear electrodynamics

open access: yes, 2010
We discuss another approach regarding the inflation from the R^2 theory of gravity originally proposed by Starobinski. A non-singular early cosmology is proposed, where, adding a nonlinear electrodynamics Lagrangian to the high-order action, a bouncing ...
Acernese   +41 more
core   +1 more source

La cosmología evasiva de Ramon Llull [PDF]

open access: yes, 2016
Ramon Llull fou un autor prolífic que escrigué més de 240 obres sobre els temes més diversos, però el seu interès principal era apologètic. Així, la major part de les seves obres s’orienten a la demostració racional de principis religiosos mitjançant el ...
Sidera Casas, Jordi
core  

The coming of age of cosmophysics

open access: yesAnais da Academia Brasileira de Ciências, 2003
''Cosmophysics'' as reviewed is a multidisciplinary domain which brings together astroparticle physics, fundamental physics in space and topics related to the structure and evolution of the Universe.
Maurice Jacob
doaj   +1 more source

"What are mortals that you are mindful of them?" A Reading of the Biblical Message about Human Being and Nature from the New Vision of Science and Ecology [PDF]

open access: yes, 2012
The author integrates the new scientific view of the universe with a rereading of the Genesis creation narratives. He introduces a reading of the human being as Vicar of God in light of \"precomprehension\" offered by science and the ecological crisis ...
Florio, Lucio
core   +1 more source

Guiando Espíritos, Sonhos e Memórias: Objetos Sagrados entre os Guarani de Mato Grosso do Sul, Brasil

open access: yesMundo Amazónico, 2019
Iniciamos esta discussão com a célebre frase do antropólogo norte-americano Anthony Seeger: Com o declínio do interesse pelos amplos esquemas evolutivos e com um aumento das análises intensivas de sociedades específicas, o estudo da cultura material foi ...
Rosalvo Ivarra Ortiz
doaj   +1 more source

A black ring with a rotating 2-sphere

open access: yes, 2005
We present a solution of the vacuum Einstein's equations in five dimensions corresponding to a black ring with horizon topology S^1 x S^2 and rotation in the azimuthal direction of the S^2. This solution has a regular horizon up to a conical singularity,
B. Carter   +15 more
core   +1 more source

Quem descobriu a expansão do universo? Disputas de prioridade como forma de ensinar cosmologia com uso da história e filosofia da ciência

open access: yesRevista Brasileira de Ensino de Física
Ainda que Edwin Hubble não tenha apoiado publicamente a expansão do universo, atualmente ele é conhecido basicamente por ter descoberto a expansão do universo.
Alexandre Bagdonas   +2 more
doaj   +1 more source

O modelo e a marca, ou o estilo dos "misturados". Cosmologia, História e Estética entre os povos indígenas do Uaçá;;

open access: yesRevista de Antropologia, 1999
Quatro diferentes grupos indígenas vivem na bacia do rio Uaçá e à margem do rio Oiapoque, Estado do Amapá, fronteira com a Guiana Francesa. Estes índios de origem étnica e cultural heterogêneas definem-se como "misturados".
Lux Boelitz Vidal
doaj   +1 more source

What Expands in an Expanding Universe?

open access: yesAnais da Academia Brasileira de Ciências, 2015
In the present investigation, the possible effects of the expansion of the Universe on systems bonded either by gravitational or electromagnetic forces, are reconsidered.
JOSÉ A. DE FREITAS PACHECO
doaj   +1 more source

A note on accelerating cosmologies from compactifications and S-branes

open access: yes, 2003
We give a simple interpretation of the recent solutions for cosmologies with a transient accelerating phase obtained from compactification in hyperbolic manifolds, or from S-brane solutions of string/M-theory.
A recent discussion can be found in G.W. Gibbons   +14 more
core   +1 more source

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