What is the Universe expanding into..

[Galu]

So far, so good.

So far, just a photo of a couple of books...

Would you like me to photograph my physics books too? 🤔

How hard can it be?

I'd need to get my DSLR out as I don't have a smartphone to walk down the street with! 😉

 

[Galu]

"We also briefly discuss the natural origin of the matter-antimatter asymmetry within this picture and possibilities for explaining the cosmological perturbations."

I'll provide some background to the above statement from Pano's extract:

In the early stages of the formation of the universe, matter and antimatter almost cancelled each other out.

However, asymmetry in that cancellation meant a tiny residue of matter was left over, and it is that residue that makes up stars, planets and people!

We are fortunate that anything was left over at all! 😎

The question of why that happened is still open-ended, and the hypothesis in Pano's extract may close that question by providing experimentally testable predictions.

 

[Galu]

"With no additional fields beyond Einstein gravity and the standard model of particle physics (including right-handed neutrinos), a Z2 symmetry stabilizes one of the right-handed neutrinos. We calculate its abundance in detail and show that, in order to match the observed dark matter density, its mass must be 4.8×108 GeV."

Could right-handed neutrinos (aka sterile neutrons) solve the dark matter puzzle?

At 4.8 x 10^8 GeV, we are talking ultra-heavy, so right-handed neutrinos could actually be the dark matter!

These super-heavy dark matter candidates have been dubbed "WIMPzillas"! 💪

 

[Galu]

There's a very good explanation of the physics behind Pano's extract here:

https://www.express.co.uk/news/scie...running-backwards-time-big-bang-solve-physics

 

[Galu]

I've just re-read the above Express article. It is really, really explanatory!

And I love the mention of the "Mirror Image" episodes of Star Trek! 😎

https://en.wikipedia.org/wiki/Mirror_Universe

 

[camplo]

This multiverse is just some mis-interpretation of math. Rest assure that what you see is what you get 😉

//

Surely you are a person who creates his own truths, like "feel facts"...Such confidence in something that you have no mastery over 😎

 

[Galu]

TNT may be correct as it seems we've now moved beyond the multiverse!

No rest for the wicked on this thread! 😈

 

[TNT]

In the Lounge, almost everyting is possible :-D

//

 

[camplo]

TNT may be correct as it seems we've now moved beyond the multiverse!

No rest for the wicked on this thread! 😈

Exactly my point -> Maybe correct. It would be much more respectable to speak in maybes on such a topic...There are much smarter people discussing this topic and they don't have the answers either😏

Not quite.

There are many mathematical models based around vacuum decay, the bubble universe being one of them.

I guess I am preaching to the choir on that one

 

[Disco-Pete]

In the Lounge, almost everyting is possible :-D

//

Yes, but you must wish upon a star and click your heels 3 times.

oh, and make sure your shoes are red shifted. 🙂

and sparkly

 

[Disco-Pete]

Exactly my point -> Maybe correct. It would be much more respectable to speak in maybes on such a topic...There are much smarter people discussing this topic and they don't have the answers either😏



I guess I am preaching to the choir on that one

see what happens when you don't follow the musings?

 

[TNT]

This thread started by everyone saying that they where mostly guessing for every post but after a while it became default 🙂 but now and again one wonder ;-)

In all other sub-forum other standards reign of course as facts are facts and questions are questions 😉

//

 

[Disco-Pete]

Who's guessing? I know I don't know what I'm talking about. All I have are annoying questions. 😗

like, why can't I whistle in the other direction?

 

[Galu]

It would be much more respectable to speak in maybes on such a topic...

I frequently remind the audience that I'm speaking in maybes. Maybe you haven't been following the thread closely?

 

[Disco-Pete]

Thanks so much again Galu. 😉

 

[Galu]

I know I don't know what I'm talking about.

Fortunately, that has never stopped you contributing!

What would we do without a jester on this thread! 😀

P.S. I'm sure your thanks are well meant! 😍

 

[Galu]

Now, what about all that brilliant physics I posted earlier?

 

[Disco-Pete]

Fortunately, that has never stopped you contributing!

What would we do without a jester on this thread! 😀

P.S. I'm sure your thanks are well meant! 😍

Actually, they are.

I always appreciate confirmation.

 

[Galu]

Stop changing the subject!

 

[Disco-Pete]

Now, what about all that brilliant physics I posted earlier?

No need to fret, your audience is theirs.