[Chemistry4me (OP)]

Jeez, that stuff is confusing. [][]

[Chemistry4me (OP)]

I'm still here you know? []

[Chemistry4me (OP)]

Why are you talking about me behind my back?

[DoctorBeaver]

Why are you talking about me behind my back?

Coz it's easier on the eye than your front  []

[yor_on]

Mr Chem, that was a sheep trick, introducing Lambert to gravity.

No disrespect meant here Neil

As for "I think it's just me."
Count me in.

[Chemistry4me (OP)]

Why are you talking about me behind my back?

Coz it's easier on the eye than your front  []

Oi...! Com' ova 'ere you!

--------

Mr Chem, that was a sheep trick, introducing Lambert to gravity.

I liked it. []

[DoctorBeaver]

AHEM... going back to the question (sort of; and even then via the scenic route):

I have serious doubts about whether gravity would unify with the other forces at high energy. I am very taken by the idea of braneworlds in a higher dimensional bulk. The other forces we experience (EM, weak & strong) are sequestered on our 3d brane (3 spatial dimensions; leave time out of this for now) but gravity is everywhere.

If our universe is a brane that was brought into existence at the moment of the Big Bang then gravity would already have been around in the higher dimension whereas the other forces came into existence with the Big Bang. There is no reason to suggest they exist anywhere else.

To my mind, attempts at unifying gravity with the other forces are pointless because no such unity exists. TOEs are full of fudges & kludges that seem to be no more than mathematicians' playthings. Layer upon layer of complexity is added to patch holes that exist in the theories. Those layers, in turn, have holes in them that require more patches and so on. It's worse than a Microsoft OS (OK, maybe not). By accepting that gravity is totally separate from the other forces we can do away with all that complexity & desperate fine-tuning.

That doesn't, though, preclude the possibility of gravitons (See? I did get back to them). If they exist they would be the most fundamental of particles as they were the only ones that existed before the Big Bang. Although it hasn't been proven, it's possible that gravity affects every type of particle so maybe they can all produce gravitons in the same way that electrons can produce photons. Or maybe every other type of particle is made of gravitons; even electrons & quarks. It's beyond my little brain to contemplate that possibility too much so I'll leave it to those with more understanding of the subject.

[Vern]

To my mind, attempts at unifying gravity with the other forces are pointless because no such unity exists. TOEs are full of fudges & kludges that seem to be no more than mathematicians' playthings. Layer upon layer of complexity is added to patch holes that exist in the theories. Those layers, in turn, have holes in them that require more patches and so on. It's worse than a Microsoft OS (OK, maybe not). By accepting that gravity is totally separate from the other forces we can do away with all that complexity & desperate fine-tuning.

I see no problem at all with unifying gravity with the other forces. Photons attract each other. Everything is made of photons. Bingo; we have gravity []

That is a simplistic way of putting it, but it is essentially the way to get gravity and electromagnetism united. The exact mechanism is only slightly more complicated. I don't feel a real need to plunge into multi-brane universes []

[JukriS]

When particle is new, is hot/density and that particle time is slowly!

Thats why new particle dont emit energy fast and that why is not giving kinetic energy for expanding atoms nucleus!

When particle is old, is not so hot/density and time is not so slowly and thats why particle emit energy fast. Thats why particle giving kinetic energy for expanding atoms nucleus!

thats why we stay earth skin with out gravity, you know!

thats why you can see old light who is redshifting!

Not, because space expanding!

space dont expanding or curving/bending at all!


.

[Vern]

When particle is new, is hot/density and that particle time is slowly!

Thats why new particle dont emit energy fast and that why is not giving kinetic energy for expanding atoms nucleus!

When particle is old, is not so hot/density and time is not so slowly and thats why particle emit energy fast. Thats why particle giving kinetic energy for expanding atoms nucleus!

thats why we stay earth skin with out gravity, you know!

thats why you can see old light who is redshifting!

Not, because space expanding!

space dont expanding or curving/bending at all!
.

I like your videos. My suspicion is that you are better at making videos than you are at making GUTs. [] 

[DoctorBeaver]

Vern - You're obviously talking about your Photonic Universe theory. I don't really understand that yet so I can't formulate an opinion.

When I said that I don't think gravity & the other forces can be unified I was meaning in the context of currently accepted theories. Of those that I've heard, the braneworld scenarios make the most sense to me and I just added my own little bit of nonsense.

I certainly do not preclude the possibility that there is another way of describing the universe that can unify all of the forces.

[Vern]

Vern - You're obviously talking about your Photonic Universe theory. I don't really understand that yet so I can't formulate an opinion.

Yes; it is difficult to keep that concept from sneaking in there; I'll try to avoid that.[]

[DoctorBeaver]

No need to avoid it so long as you accept that some others don't understand it and hence cannot pass comment on it.

[Vern]

I will always say that I am speculating when writing about something that is not part of current scholastic thinking.