Your Daily Equation #30: What Sparked the Big Bang?

Episode 30 #YourDailyEquation: Even after astronomical observations convinced Einstein that the universe is expanding there remained the question of what drove the universe to expand in the first place--that is, what sparked the Big Bang. Join Brian Greene to explore one prominent possibility: repulsive gravity ignited a brief but powerful burst off cosmic inflation.

Even if your math is a bit rusty, join Brian Greene for brief and breezy discussions of pivotal equations and exciting stories of nature and numbers that will allow you to see the universe in a new way.

The World Science Festival (WSF) is an innovative multi-media organization that produces original live and digital content straddling the arenas of science, technology, the arts, media, performance and education. With the goal of radically transforming public perceptions of science, WSF creates world-class programming, both live on stage and televised, featuring inspired collaborations, outstanding talent and novel production techniques that bring scientific discovery, insight and perspective to a broad general audience.

[dougg]

Take us on a tour of you crib man! I want to see the professor’s house:)

[simonapalosan]

I become addicted to the daily equation! And the old odd shaped tree fits perfectly into the scene.

[paulc]

Thanks for another great episode of Your Daily Equation.
Take Care & Stay Safe.
Best wishes from West Wales. Thanks Prof. Paul C

[DrPrashant_Sharma]

Please comment on latest NASA observation related to parallel universe.

[localtitans]

Maybe universe is expanding only to our perspective

[jimm]

This lecture fills a lot of gaps in my understanding of inflationary theory. Thx Brian

[garyburnell]

This is the most helpful Education on the net, This was just what I was looking for to understand the math and concepts of physics at a new level. So Thank You and keep going, please.

[UtraVioletDreams]

Suggestion: In one of the episodes you talked about entanglement. In addition, could you please tell us about quantum tunnelling?

[neonblack]

Dear Greene,
Are you going to get to string theory and the various mathematics related to it at some stage? As a casual physics fanatic, I would love some insight into that area specifically related to the math; rather than the concepts used to make it analogous or easy to understand for people with no knowledge of math.

I know it’s an enormous topic but I would still like to see something from it, especially from someone like yourself.
Thanks for all you have brought to the scientific community!

[marceljanssens]

Aren'r we all waiting for an episode of Your Biggest Daily Idea in the Equation Universe?

[localtitans]

Professor is it possible that gravity is not what we actually think it is like..I mean gravity must not be something which only attracts...maybe it is the geometry of the spacetime and not some sort of matter to expanding universe...well I am a class 10th student...so it might not be the right time to talk about it

[das_it_mane]

Thank you for these videos professor 🙏

[PhysicalrealityNet]

Professor Greene, thank you for an enjoyable presentation. I should be grateful if you could comment on what I have to say.
There are two issues that come to mind from the interpretation of the maths that you have put forward, and which I feel have not been addressed by physicists.

One, is that the theory proposes that matter has developed from local fluctuation of the quantum field, which appeared in a big bang from nowhere. Unless something is eternal, then when it materialises in time, it must have come from somewhere. Therefore, one can assume that the field (the fabric of space) is eternal and therefore it pre-existed the formation of energy and matter in space. This can set an initial condition for the relevant maths, with the field initially having no fluctuations, i.e. a flat space with zero pressure.

Two, the fact that negative pressure leads to the expansion of space, can only mean that matter, is continuing to form in space. This is because according to string theory mass is a volume of a locally exposed background vacuum, and therefore it must possess negative pressure equal in magnitude to the positive pressure in its immediate surrounding fabric.

These two issues call for a revision of the interpretation of the maths, for they lead one to conclude that the expansion must have begun at gradual base, at absolute zero, i.e. absolute entropy. Thus, as individual matter particles formed, temperature began to increase locally. Moreover, the rate of creation of matter and energy is proportional to the amounts in existence, hence the accelerating expansion.

On this account, the drive behind the expansion, which counteracts gravity, is the result of the accelerating rate of creation of particles. On this account, the expansion of universe maintains the density of matter and energy in the universe, and as they continue to form in all direction, the horizon problem is resolved.

This proposition solves all outstanding problem in cosmology, including that of the low entropy of the universe. It also suggests that the universe is a reoccurring phenomenon.

[clubadv]

Why did this not get more views. Oh yeah everyone's watching nonsense

[Name-jsuq]

As I am listening to you all I want to do is say is thank you so much for your time to help others learn as you have. 🙂l

[vaidikgheravada]

Hi sir..
I have some Theories for physics...
Please replay me...
Please😫🙏🙏

[Name-jsuq]

I love learning from you!! Because you make it easy to understand.

[DrJeeps]

Now that was very informative. Thank you.

[scienceaffairs]

Thanks YouTube to give us opportunity to learn complicated topics from experts, I think if I wanted to take tution form Brian separately it will costly

[rkennedy]

BTW: I am 72yo, a retired Electrical Engineer, a.k.a. lifelong scientist wannabe, and find you approach to explaining these concepts truly exciting. Thanks for doing this.