Results 11 to 20 of about 6,262 (135)

Cosmologia standard e oltre

open access: yes, 2013
Nel corso della seconda metà del XX secolo si è progressivamente svilppata ed affermata una cosmologia “standard”: vedremo in che cosa consiste e come si è costituita. Vedremo anche quali sono i suoi limiti e quali nuove teorie si candidano per superarli.
Cappi, Alberto
core   +4 more sources

Cosmologies with Scalar Fields from Higher Dimensions Applied to Bianchi Type VIh=−1 Model: Classical and Quantum Solutions

open access: yesAdvances in High Energy Physics, Volume 2018, Issue 1, 2018., 2018
We construct an effective four‐dimensional model by compactifying a ten‐dimensional theory of gravity coupled with a real scalar dilaton field on a time‐dependent torus. The corresponding action in four dimensions is similar to the action of K‐essence theories.
J. Socorro   +3 more
wiley   +1 more source

Tekoha Ñeropu’ã:aldeia que se levanta

open access: yesRevista NERA, 2020
A existência do povo indígena Guarani Kaiowá tem na palavra yvyrasáva (os viajantes da terra; yvy, terra) o meio da realização da grande viagem da existência.
Eliel Benites
doaj   +1 more source

Time‐Dependent Toroidal Compactification Proposals and the Bianchi Type I Model: Classical and Quantum Solutions

open access: yesAdvances in High Energy Physics, Volume 2016, Issue 1, 2016., 2016
We construct an effective four‐dimensional model by compactifying a ten‐dimensional theory of gravity coupled with a real scalar dilaton field on a time‐dependent torus. This approach is applied to anisotropic cosmological Bianchi type I model for which we study the classical coupling of the anisotropic scale factors with the two real scalar moduli ...
L. Toledo Sesma   +3 more
wiley   +1 more source

Aspectos da cosmologia newtoniana [PDF]

open access: yes, 2023
O presente trabalho aborda uma introdução ao estudo da Cosmologia, que se dedica à investigação da origem e evolução do Universo. A Teoria da Relatividade Geral desempenha um papel fundamental na construção da estrutura conceitual da Cosmologia. Contudo,
Santos, Victor José
core  

Photon sector analysis of Super and Lorentz symmetry breaking: effective photon mass, bi-refringence and dissipation

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
Within the standard model extension (SME), we expand our previous findings on four classes of violations of Super-Symmetry (SuSy) and Lorentz Symmetry (LoSy), differing in the handedness of the Charge conjugation-Parity-Time reversal (CPT) symmetry and ...
Luca Bonetti   +3 more
doaj   +1 more source

Classical Bianchi Type I Cosmology in K‐Essence Theory

open access: yesAdvances in High Energy Physics, Volume 2014, Issue 1, 2014., 2014
We use one of the simplest forms of the K‐essence theory and we apply it to the classical anisotropic Bianchi type I cosmological model, with a barotropic perfect fluid (p = γρ) modeling the usual matter content and with cosmological constant Λ. Classical exact solutions for any γ ≠ 1 and Λ = 0 are found in closed form, whereas solutions for Λ ≠ 0 are ...
J. Socorro   +3 more
wiley   +1 more source

Soler Gil, Francis. El universo a debate. Una introducción a la filosofía de la cosmología

open access: yesIdeas y Valores, 2020
En este libro el profesor Soler Gil nos brinda una interesante y actualizada filosofía de la cosmología, a modo de manual breve y enjundioso. Partiendo de los datos que nos proporcionan las distintas ciencias relacionadas con la cosmología, tenemos ante
Jaime Vilarroig
doaj   +2 more sources

Univocidade e finitude

open access: yesRevista Filosófica de Coimbra, 2018
O âmbito da fenomenologia pode ser circonscrito pelo que Husserl chamou de a priori universal da correlação entre o ente transcendente e seus modos subjetivos de doação.
Renaud Barbaras
doaj   +1 more source

The schooling by shamanism plan: Reflections among the Guarani-Mbyá of Rio de Janeiro

open access: yesEducation Policy Analysis Archives, 2020
This paper is the result of anthropological research conducted among the Mbyá - Guarani, from the Southeast of Brazil and Northern Argentina. Based on the ethnographic method, the paper analyzes indigenous schooling through the shamanism plan and the ...
Danielle Bastos Lopes
doaj   +1 more source

Home - About - Disclaimer - Privacy