Linked Questions

-5
votes
1answer
437 views

About the existence of anti-photon [duplicate]

How can be explained the phenomenon of two related Gamma rays ending their courses by becoming an electron and a positron without the involvement of a photon and an anti-photon ? This question must be ...
2
votes
2answers
174 views

How can we actually prove that photon is its own antiparticle? [duplicate]

As we know that photon is its own antiparticle so how can we confidently say this is true? Is there any theory that describes it?
0
votes
1answer
59 views

In an anti-matter universe, would an anti-matter black hole emit anti-matter gamma radiation? [duplicate]

In an anti-matter universe, when an anti-matter black hole is consuming a large anti-matter star, would it emit anti-matter gamma radiation, or would gamma radiation be the same in either a matter or ...
8
votes
3answers
5k views

Can photons have negative energy?

Apparently there are 2 electron self-energy graphs possible. The first, the more "familiar", where the incoming electron at time $t_1$ splits up in a photon and an virtual electron. At $t_2>t_1$ ...
2
votes
2answers
1k views

What happens when Antimatter interacts with a photon?

So... I was just pondering the energy and particles in the universe. It makes sense that matter is attracted to it's self by a gravitational force - it clumps and forms some kind of gravity ...
4
votes
2answers
325 views

A black torch to darken everything

Can we ever have a black colored (the color of the light and not the body's color) torch that darken (or dis-illuminates) everything? While compared to a normal torch it would function in an opposite ...
1
vote
1answer
264 views

What type of symmetry specifies in presence of what each not-charged particle (for example, neutrino) should have an antiparticle?

I think that charging symmetry assumes antiparticle presence, which has an opposite charge sign . And what symmetry assumes existence of an antiparticle at a neutral particle
1
vote
2answers
319 views

Are fundamental particles just a trajectory in spacetime? [closed]

Long time ago Wheeler proposed an idea that there is only one electron, some kind of a closed(?) four dimensional knot in spacetime, and in one particular time we slice this knot with a plane and ...
4
votes
4answers
164 views

Why does the photon have no antiparticle?

Considering the QED Lagrangian we get a solution of the form $A^{\mu}$. This solution has four degrees of freedom (dof). With the weak Lorenz gauge we reduce it to two dof. With this condition we also ...
0
votes
1answer
151 views

Antimatter and annihilation of light and black light

Can we annihilate a photon with an opposite phase? As two photons annihilate to give two antimatter photons (with opposite charge), these photons must have some opposite property. When these opposite ...