Novos modelos cosmológicos sem o Big Bang: sem princípio e sem fim

sábado, julho 31, 2010

Cosmological Models with No Big Bang 

Wun-Yi Shu 

(Submitted on 11 Jul 2010) 

In the late 1990s, observations of Type Ia supernovae led to the astounding discovery that the universe is expanding at an accelerating rate. The explanation of this anomalous acceleration has been one of the great problems in physics since that discovery. In this article we propose cosmological models that can explain the cosmic acceleration without introducing a cosmological constant into the standard Einstein field equation, negating the necessity for the existence of dark energy. There are four distinguishing features of these models: 1) the speed of light and the gravitational "constant" are not constant, but vary with the evolution of the universe, 2) time has no beginning and no end, 3) the spatial section of the universe is a 3-sphere, and 4) the universe experiences phases of both acceleration and deceleration. One of these models is selected and tested against current cosmological observations of Type Ia supernovae, and is found to fit the redshift-luminosity distance data quite well. 

Comments: 33 pages, 3 figures 
Subjects: General Physics (physics.gen-ph) 
Cite as: arXiv:1007.1750v1 [physics.gen-ph] 
Submission history 
From: Wun-Yi Shu [view email] 
[v1] Sun, 11 Jul 2010 00:00:49 GMT (322kb)



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