I Is it time to take the 'bang' out of the Big Bang?

[elcaro]

TL;DR

Video lecture by Paul Steinhard, one of cofounders of the theory of cosmological inflation, who now works on an alternative cosmological model, namely cycling universe. In this lecture he compares a slow contracting cosmological model to an inflationary model, and discusses the effects this has on the overall flatness of the universe.

Paul Steinhardt: Time to Take the ‘Big Bang’ out of the Big Bang Theory?​

Paul Steinhard, who co-founded inflationary cosmology, is working on alternatives for inflation in the form of a cyclic, bouncing universe model. In this lecture he compares his model with the inflationary model, and argues that a slow contracting universe would better explain the flatness of the universe as inflation can.

What do you think of a cyclic model versus inflationary model, has a cyclic universe more explenatory power and does it fit better with the cosmological data as inflation?

For some more background on this cyclic cosmological model, I add some more videos on this and a scietific paper:

Paul Steinhardt and the New Big Bounce Cosmology​

Paul Steinhardt: Introduction to Bouncing Cosmology​

Link to the paper:

A Cyclic Model of the Universe​

PS. I am not an advocate for a cyclic universe (or any other) model, and I guess ultimately precission meausurements can decide what model best fits the data. As for any scientific theory.

 

[anorlunda]

Summary:: Video lecture by Paul Steinhard, one of cofounders of the theory of cosmological inflation, who now works on an alternative cosmological model, namely cycling universe. In this lecture he compares a slow contracting cosmological model to an inflationary model, and discusses the effects this has on the overall flatness of the universe.

What do you think of a cyclic model versus inflationary model, h

It is inevitable that someone will name it the big boing, and that name will stick.

 

[PeterDonis]

Summary:: Video lecture by Paul Steinhard, one of cofounders of the theory of cosmological inflation, who now works on an alternative cosmological model, namely cycling universe. In this lecture he compares a slow contracting cosmological model to an inflationary model, and discusses the effects this has on the overall flatness of the universe.

What do you think of a cyclic model

It's hard to base discussion on videos. Do you have any links to actual papers on Steinhard's cyclic model?

 

[elcaro]

It's hard to base discussion on videos. Do you have any links to actual papers on Steinhard's cyclic model?

Yes. I will add that te link to the paper in the original post.

 

[Chiefly]

Excellent post and really helps, would have liked to see the whole lecture with his associates.