Since the discovery of Accelerating universe many theoretical models were introduced in order to describe the cause of this acceleration.
The models generally, are divided into two main parts.
1)Geometrical ones & 2)Physical ones.
Geometrical models assert that we do not understand the physics of gravity-(geometry)/because of GR/, in long ranges and small curvatures.So we must change the context of general relativity and then consequently we will be able to solve the problem of Accelerating universe ./This models are called generally Modified gravity models/
The other part are standing the physicists that claim the right theory is the physical ones.
They introduce new physical quantities like scalar field (Dark energy models-Quintessence models) with new thermodynamical properties / w<-1/3(Equation of state)/ to describe this problem.
Anyhow many there are many other approaches proposed in last decade that lately, I will post a blog listing the most fav. ones.
But what is the good part of the story is that there are many review papers
"God bless them " , that we can grasp the late happenings in the field of accelerating universe through studying them.
Let me name some :
1) Joshua Frieman (Chicago/Fermilab), Michael Turner (Chicago), Dragan Huterer(Michigan)/2008/
2)Eric V. Linder /2008/
3))Eric V. Linder/2007/
4) T. Padmanabhan /2007/
5)Edmund J. Copeland, M. Sami, Shinji Tsujikawa/2006/
6)Varun Sahni , Alexei Starobinsky/2006/
7)Rachel Bean, Sean Carroll, Mark Trodden /2005/
8) P. J. E. Peebles, Bharat Ratra /2002/
9)Dragan Huterer, Michael S. Turner /2001/
10)Sean M. Carroll /2000/
Hope to enjoy them.
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