Phil Halper (aka Skydivephil) | Has the Big Bounce been ruled out? @PhilHalper1 | Uploaded December 2023 | Updated October 2024, 1 week ago.
Earlier this year, Scientific American published an article with the headline "The Universe Began with a Bang, Not a Bounce," claiming that a new analysis of the European Space Agency's Planck Satellite speaks powerfully against the Big Bounce model from Loop Quantum Cosmology (LQC). LQC is a cosmological model inspired by the mother theory of Loop Quantum Gravity ( a rival to string theory).
However, one of the researchers mentioned in the article, Ivan Agullo, argues the story is totally misconceived, and the evidence is consistent with a Bounce. In this film, he explains why.
For more on LQC see here:
youtube.com/watch?v=x9jYH5VIF9E&t=1740s
and here
youtube.com/watch?v=MgwJmWXoWWI&t=66s
For our Before the Big Bang series:
youtube.com/watch?v=Ry_pILPr7B8&list=PLJ4zAUPI-qqqj2D8eSk7yoa4hnojoCR4m

A timeline of the film is below.

0:00 Introduction
1:15 Ivan vs Scientific American
5:04 LQC and the Big Bounce
7:53 Seeing the Bounce in the CMB
11:06 CMB anomalies
12:03 Are the Bang and the Bounce compatible?
17:09 What were they looking for?
19:44 No Signal, what does it mean?
23:20 Oscillations
24:12 CMB anomalies and the bounce
27:02 Final Thoughts