BransDicke Cosmology and Accelerated Exlansion

[Quantizer]

I have just seen this paper on constructing a cosmology for the accelerated expansion of the universe through BransDicke theory

http://arxiv.org/pdf/1402.4291v1.pdfBesides this approach

What are the alternative or leading cosmological theories that can predict to some fairly strong confidence the accelerating expansion of the universe

 

[Mordred]

The concordance model is $\Lambda$CDM. Though its certainly not the only model that can show the expansion history. The FLRW metrics of the Lambda CDM can easily do that.. its also the model most used in most of the cosmology textbooks

 

[Matterwave]

Einstein's general relativity has a cosmological constant term in it which produces, as far as I know, exactly the accelerated expansion we observe. So, that's one alternative, and perhaps the simplest alternative.

Now if you are asking what theories will give you this value for the cosmological constant (since it's a constant of integration in Einstein's GR, there's no way internally to the theory of predicting this constant), then there are myriad attempted possibilities with varying degrees of success (none are very close to being successful as far as I know). The accelerated expansion of the universe is, at this point, a mystery.

 

[Mordred]

Forgot to mention another strong model is loop quantum cosmology LQC. If your interested in fields in general to describe many of the aspects of cosmology I recommend this free textbook.

"Fields"

http://arxiv.org/abs/hepth/9912205

a free textbook for LCDM can be found here

ASTROPHYSICS AND COSMOLOGY
http://arxiv.org/pdf/hep-ph/0004188v1.pdf

can't help on LQC as I study LCDM

for the various metrics of GR and SR I recommend
"Lecture Notes on General Relativity" by Matthias Blau

http://www.blau.itp.unibe.ch/newlecturesGR.pdf

I'm still studying the last article myself

 

[sardar]

?Thank you for sharing this paper on BransDicke cosmology and the accelerated expansion of the universe. The idea of using BransDicke theory to explain the accelerated expansion is certainly an interesting one, and it is important to explore alternative approaches in order to gain a better understanding of this phenomenon.

One of the most widely accepted theories for the accelerated expansion of the universe is the Lambda-CDM model, which incorporates both dark energy and dark matter. This model has been extensively tested and is consistent with a variety of observational data, making it a strong candidate for explaining the accelerated expansion.

Another theory that has gained attention in recent years is modified gravity, which suggests that the laws of gravity may be different on large scales than what we observe on Earth. This theory has been used to explain the accelerated expansion without the need for dark energy, and has also been tested against observational data.

Other theories that have been proposed include the holographic principle, which suggests that the information in the universe is encoded on the surface of its boundary, and the theory of phantom energy, which suggests that the expansion of the universe will eventually lead to its destruction.

Overall, there is still much debate and research happening in the field of cosmology to explain the accelerated expansion of the universe. While the Lambda-CDM model is currently the most widely accepted, it is important to continue exploring alternative theories, such as BransDicke cosmology, in order to gain a more complete understanding of this phenomenon.