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

[elcaro]

TL;DR 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.

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.