Anonymous at Mon, 10 Jun 2024 10:00:31 UTC No. 16226529

Particle has charge Q
Antiparticle has charge -Q
If Q = 0, particle = antiparticle

Anonymous at Mon, 10 Jun 2024 10:31:40 UTC No. 16226555

>>16226529
not true, neutrinos have charge 0 and antineutrinos may exist

Anonymous at Mon, 10 Jun 2024 12:42:36 UTC No. 16226687

>>16226482
well what should happen if a photon and anti-photon annihilate?

Anonymous at Mon, 10 Jun 2024 12:44:12 UTC No. 16226690

>>16226687
They create the omni-photon

Anonymous at Mon, 10 Jun 2024 13:05:08 UTC No. 16226716

>>16226482
Because there is no negative energy or negentropy.
Matter and antimatter annihilate into energy.
Light and anti light would annihilate into matter.
Let there be light.

Anonymous at Mon, 10 Jun 2024 13:36:04 UTC No. 16226759

>>16226482
It might be easier to think of it this way: There's no such thing as an antiphoton. If you take an electron neutrino for instance, you can flip the lepton number from 1 to -1 and get an electron antineutrino. But a photon's lepton number is zero, so there's nothing there to flip. The same is true of every other quantum number. You can't make a photon into an antiphoton by changing quantum numbers, therefore it might be easier to understand just to say that there's no such thing as an antiphoton.

Anonymous at Mon, 10 Jun 2024 14:03:46 UTC No. 16226804

>>16226690
sounds ominous

Anonymous at Mon, 10 Jun 2024 17:38:30 UTC No. 16227097

>>16226482
Never heard that someone is his own enemy?

Anonymous at Mon, 10 Jun 2024 17:50:45 UTC No. 16227116

>>16226482
Switch the charge, and switch the parity of the particle. If what you get in the math is the same as what you started with, that means the antiparticle is the same as the particle. If you do this with an electron, you get the positron. CP switching is equivalent to time switching, which means a positron is like an electron going backwards in time. Not saying this is what happens, but the math makes it nice to do Feynman diagrams with - just switch the arrow backwards to represent the antiparticle.

Anonymous at Mon, 10 Jun 2024 17:54:25 UTC No. 16227121

>>16226482
If you get two photons with very high energies, if they collide and "annihilate each other", producing an electron-positron pair. The same goes for an electron and positron annihilating to create a pair of photons.

Anonymous at Mon, 10 Jun 2024 18:51:16 UTC No. 16227211

>>16226482
because it's actually just a wave not a particle

Anonymous at Mon, 10 Jun 2024 19:13:23 UTC No. 16227242

>>16226529
H has Q=0
So anti-hydrogen doesn't exist right

Anonymous at Mon, 10 Jun 2024 19:56:38 UTC No. 16227306

Photons give all properties to particles.
Mass
Charge
Spins all sort

Anonymous at Mon, 10 Jun 2024 20:03:00 UTC No. 16227318

>>16227242
Hydrogen isn't in the standard model and has a net quadruple moment you fucking IDIOT don't ever respond to one of my posts again

Anonymous at Mon, 10 Jun 2024 20:12:45 UTC No. 16227337

>>16227318
>net quadruple moment
expand on this

Anonymous at Mon, 10 Jun 2024 21:26:10 UTC No. 16227460

>>16226804
*omnious

Simulacrum at Tue, 11 Jun 2024 04:45:15 UTC No. 16227960

>>16227116
>>16226482
In "The Strange Theory of Light and Matter," by Richard Feynman, it is explained why the photon is its own anti-particle.

It is stated that every particle has an amplitude to move backwards in time, and therefore has an anti-particle. If we're thinking about it like Feynman thought about it, an anti-particle is just a particle--like for example an electron--that is moving backwards with respect to time, but moving "forward" in space. Because photons look exactly the same in all respects when they travel backwards in time, that means they are their own anti-particle.

Anonymous at Tue, 11 Jun 2024 05:23:13 UTC No. 16227976

>>16226482
>Why is the photon its own antiparticle?
no one knows
it just is