Planck Photon...

**Orion1** · Mar4-05, 10:20 PM

Originally Posted by Norman

I would guess that it (the extremely high energy photon) would decay into many "quantum particles" rather than 2 essentially classical ones.

Based upon the Planck Photon threshold energy, what types of 'quantum particles' would be the expected 'particle' decay products?

What is the threshold energy for unification based upon the Standard Model?

Mar5-05, 06:00 AM

Planck mass is the mass which is required to collapse a Planck size volume into a black hole. QM predicts that no smaller black hole can exist. GR has no such restriction, and predicts that smaller black holes can exist in spaces smaller than the Planck volume. Perhaps we will have an answer to this question if the new collider at CERN produces miniature black holes, as some physicists have predicted.

**Norman** · Mar5-05, 10:32 AM

Originally Posted by Orion1

Based upon the Planck Photon threshold energy, what types of 'quantum particles' would be the expected 'particle' decay products?

What is the threshold energy for unification based upon the Standard Model?

Sorry I must not have been thinking... a free photon has an infinite lifetime. It is a stable particle and does not have a preferred decay channel. See http://pdg.lbl.gov/ please. But if this was a virtual photon it would of course be constrained by the the conservation laws of the initial particles (ie electric charge, lepton number, etc). I am sorry but I do not understand your question about threshold energy of unification of the Standard Model. If you are asking at what energy is it projected that the strong and electroweak forces become indistinguishable, I believe it is believed this happens at about 10^15 GeV.
I would be good to note that this(grand unification energy) has (not yet) been tested but I think it is probable based on the unification of the weak and electromagnetic forces.

**Norman** · Mar5-05, 10:49 AM

Please note my orginal post on the planck energy above was wrong. I redid the calculation since I noticed that grand unification would happen way above the planck energy and it should not, they should be close but unification is just below planck energy.
$LaTeX Code: E_p=\\sqrt{\\frac{\\hbar c^5}{G}}=\\sqrt{\\frac{(1.05\\times 10^{-34}) (3\\times 10^8)^5}{6.67\\times 10^{-11}}}=1.96\\times10^9J=3 \\times 10^{16} GeV$
Sorry about the mix up. I don't know where I got 10^10 GeV...

**Orion1** · Mar5-05, 10:27 PM

The 'Planck Energy' threshold is:

Planck Energy:
$LaTeX Code: \\boxed{E_p = \\sqrt{\\frac{\\hbar c^5}{G}} = 1.956 \\cdot 10^9 \\; J = 1.221 \\cdot 10^{19} \\; GeV}$

The 'SU(5) Energy' threshold is:
$LaTeX Code: E_{SU(5)} = 10^{15} \\; GeV$

Reaction 3 in post#1 originates from a 'virtual Planck Photon' of dual 'Planck Energy' amplitude.

The difference between 'SU(5) Energy' and 'Planck Energy' is that at SU(5) Energy, strong and electroweak forces become indistinguishable. At the 'Planck Energy', the strength of the gravitational interactions of fundamental particles becomes indistinguishable from the strong and electroweak forces.

The 'Planck Energy' is the typical energy of a vibrating string in string theory.

Originally Posted by misogynisticfeminist

what happens when an EM wave (or photon or whatever) has a frequency wayyyyy beyond the gamma ray and radiowave region. What would it be? What kinda properties would it have?

Is a 'Planck Photon' a Gamma Photon?, or is a new classification required for the 'Orion1 Spectrum'?

What is the fundamental difference in wave function between a virtual photon and a free photon?

What is the fundamental difference in wave function between a virtual 'Planck Photon' and a fixed-ended vibrating string?

Reference:
http://www.site.uottawa.ca:4321/astr...l#Planckenergy
http://www.valdostamuseum.org/hamsmith/SU5GUT.html