The Cyclic Model attempts to resolve the homogeneity, isotropy, and flatness
problems and generate a nearly scale-invariant spectrum of fluctuations during
a period of slow contraction that precedes a bounce to an expanding phase. Here
we describe at a conceptual level the recent developments that have greatly
simplified our understanding of the contraction phase and the Cyclic Model
overall. The answers to many past questions and criticisms are now understood.
In particular, we show that the contraction phase has equation of state w>1 and
that contraction with w>1 has a surprisingly similar properties to inflation
with w < -1/3. At one stroke, this shows how the model is different from
inflation and why it may work just as well as inflation in resolving
cosmological problems.
%0 Generic
%1 steinhardt2004cyclic
%A Steinhardt, Paul J.
%A Turok, Neil
%D 2004
%K coding cyclic mathematics model simplified
%R 10.1016/j.newar.2005.01.003
%T The Cyclic Model Simplified
%U http://arxiv.org/abs/astro-ph/0404480
%X The Cyclic Model attempts to resolve the homogeneity, isotropy, and flatness
problems and generate a nearly scale-invariant spectrum of fluctuations during
a period of slow contraction that precedes a bounce to an expanding phase. Here
we describe at a conceptual level the recent developments that have greatly
simplified our understanding of the contraction phase and the Cyclic Model
overall. The answers to many past questions and criticisms are now understood.
In particular, we show that the contraction phase has equation of state w>1 and
that contraction with w>1 has a surprisingly similar properties to inflation
with w < -1/3. At one stroke, this shows how the model is different from
inflation and why it may work just as well as inflation in resolving
cosmological problems.
@misc{steinhardt2004cyclic,
abstract = {The Cyclic Model attempts to resolve the homogeneity, isotropy, and flatness
problems and generate a nearly scale-invariant spectrum of fluctuations during
a period of slow contraction that precedes a bounce to an expanding phase. Here
we describe at a conceptual level the recent developments that have greatly
simplified our understanding of the contraction phase and the Cyclic Model
overall. The answers to many past questions and criticisms are now understood.
In particular, we show that the contraction phase has equation of state w>1 and
that contraction with w>1 has a surprisingly similar properties to inflation
with w < -1/3. At one stroke, this shows how the model is different from
inflation and why it may work just as well as inflation in resolving
cosmological problems.},
added-at = {2013-12-23T11:45:41.000+0100},
author = {Steinhardt, Paul J. and Turok, Neil},
biburl = {https://www.bibsonomy.org/bibtex/2da3598307463db667c6c6bdba6ce7129/aeu_research},
description = {The Cyclic Model Simplified},
doi = {10.1016/j.newar.2005.01.003},
interhash = {4c5ebf431642747bedc6ec1ee148a69a},
intrahash = {da3598307463db667c6c6bdba6ce7129},
keywords = {coding cyclic mathematics model simplified},
note = {cite arxiv:astro-ph/0404480Comment: 12 pages, 2 figures},
timestamp = {2013-12-23T11:45:41.000+0100},
title = {The Cyclic Model Simplified},
url = {http://arxiv.org/abs/astro-ph/0404480},
year = 2004
}