How is matter created from energy?

Started by Lestov165 pages

How is matter created from energy?

Two Powerful gamma ray photons were collided to create leptons such as electrons. but how would the process work for quarks? Would one have to collide two gluons (IDK if that's possible considering gluons can never exist independently) or some other boson? And would it be possible to generate a fermion without creating an antiparticle to cancel it out?

Quarks can't exist independently, either (afaik). If you try to pull them apart (say, in a proton), the binding energy (gluon exchange) increases until that energy "condenses" into a quark-antiquark pair (I imagine, then, the particles probably annihilate each other). And I don't think it's possible to create a fermion w/o its antiparticle because you don't have a balance of charges (ie, out of the "neutrality" of photons, you can't get just a "+" w/o a "-" when the fermions form).

Okay, Astner. I gave it my best shot. You're up.

Another physics question. Do negative-mass particles count as tardyons (massive particles), luxons (massless particles), tachyons, or none of the above?

They can't be luxons because luxons have exactly zero mass.
They're probably not tachyons because tachyons have imaginary mass.
Either they're tardyons or they're a new thing.

technically, a tardyon is any particle which moves beneath the speed of light, so I think it's a tardyon, but I'm unsure

Re: How is matter created from energy?

I worked to 22:00, I get home now, I have to wake up 5:00 for work tomorrow, and now this is up.

Originally posted by Lestov16
Two Powerful gamma ray photons were collided to create leptons such as electrons.

Actually the photons would need to interact with a nucleus in order to pair produce an electron and a position.

Originally posted by Lestov16
but how would the process work for quarks?

Theoretically you could create quarks in a similar manner, though you'd need more energy and other conditions.

You are able to create top- and anti-top quarks via the weak force and the strong force, the latter being more energy-costly.

Originally posted by Lestov16
Would one have to collide two gluons (IDK if that's possible considering gluons can never exist independently)

You mean the interaction between two gluons? Yes, that would be the strong force I referred to earlier.

Originally posted by Lestov16
And would it be possible to generate a fermion without creating an antiparticle to cancel it out?

No, because technically a particle and its antiparticle is the same particle. Though you could separate them before they could interact.

Originally posted by Lestov16
Another physics question. Do negative-mass particles count as tardyons (massive particles),

If you get a tensor describing a particle with negative mass it means that you've inverted one—or any odd amount—of the volume axes.

Originally posted by Astner
If you get a tensor describing a particle with negative mass it means that you've inverted one—or any odd amount—of the volume axes.
In English, please.

Originally posted by Mindship
In English, please.

Negative mass means negative volume—since density is a nonnegative scalar—which in turn means that the volume is optically inverted.

That said, particles doesn't have volume so they can't have negative mass.

Originally posted by Astner
which in turn means that the volume is optically inverted.

what do you mean by optically? My only understanding of the term comes from vision, so I'm curious.

are you just saying one of your measuring scales looks backward? is backward?

Originally posted by Astner
Theoretically you could create quarks in a similar manner, though you'd need more energy and other conditions.

this would be the quark-gluon plasma, no?

Originally posted by Oliver North
what do you mean by optically? My only understanding of the term comes from vision, so I'm curious.

What separates a body from a particle is that a body can rotate. So in addition to having three degrees of freedom in terms of movement bodies can also rotate around any of the three axes.

Let your fingers span the coordinate system as in the picture above.

Now let's say that you want your index finger (the x-axis) to point in the opposite direction. You can do this by either rotating your hand around the y- or z-axis (FU-finger and thumb respectively) 180 degrees. But if you rotate your coordinate system around the y-axis 180 degrees the z-axis will also point in the opposite direction (vice versa if you rotate around the z-axis).

In short, there's no way you could make it so the x-axis points backwards without affecting another axes. If you do get it wrong then it's said to be optically inverted.

Originally posted by Oliver North
this would be the quark-gluon plasma, no?

That would be enough energy, yes.

ah, that is really interesting 🙂

Originally posted by Astner
That said, particles doesn't have volume so they can't have negative mass.

You sure about this?

Also, if particles can't have negative mass, then what's the point of the Casimir effect? Does it indicate that only negative energy can exist but not negative matter?

Originally posted by TheGodKiller
what's the point of the Casimir effect?

Oh, yes, let's discuss teleology with Astner.

Originally posted by TheGodKiller
You sure about this?

Yes, that's the difference between a particle—formally referred to as a point particle to not be confused with chemistry jargon—and a body in physics.

A good example would be quarks and leptons, they don't have volume in the standard model, partially because volume at that scale is more or less meaningless but more importantly due to their vacuum polarization (a cloud of virtual particle-antiparticle pairs).

Originally posted by TheGodKiller
Also, if particles can't have negative mass,

Particles can have mass, they just don't have volume.

Originally posted by TheGodKiller
then what's the point of the Casimir effect? Does it indicate that only negative energy can exist but not negative matter?

What the **** are you talking about? The Casimir effect occurs due to phase shifts, often referred to as vacuum energy.

Originally posted by Symmetric Chaos
Oh, yes, let's discuss teleology with Astner.

Right, you're one of those astrologist who attributes every phenomena in nature to aether fluctuations.

This is exactly why I don't bother discussing physics with you people.

Originally posted by Astner
Negative mass means negative volume—since density is a nonnegative scalar—which in turn means that the volume is optically inverted.

That said, particles doesn't have volume so they can't have negative mass.

But does it move slower than light? Even though it has a mass of -1, doesn't it still count as a tardyon because it's mass is not 0 (like a luxon), or imaginary (like a tachyon)?

Originally posted by Astner
Yes, that's the difference between a particle—formally referred to as a point particle to not be confused with chemistry jargon—and a body in physics.

A good example would be quarks and leptons, they don't have volume in the standard model, partially because volume at that scale is more or less meaningless but more importantly due to their vacuum polarization (a cloud of virtual particle-antiparticle pairs).

Particles can have mass, they just don't have volume.

What the **** are you talking about? The Casimir effect occurs due to phase shifts, often referred to as vacuum energy.

Right, you're one of those astrologist who attributes every phenomena in nature to aether fluctuations.

This is exactly why I don't bother discussing physics with you people.


You're right; condescension and other forms of talking down to people don't qualify as discussion. ha-som

Originally posted by Astner
Right, you're one of those astrologist who attributes every phenomena in nature to aether fluctuations.

This is exactly why I don't bother discussing physics with you people.

No, please, amaze me with your teleological analysis of the Casmir effect.

Originally posted by Astner
Yes, that's the difference between a particle—formally referred to as a point particle to not be confused with chemistry jargon—and a body in physics.

A good example would be quarks and leptons, they don't have volume in the standard model, partially because volume at that scale is more or less meaningless but more importantly due to their vacuum polarization (a cloud of virtual particle-antiparticle pairs).

Particles can have mass, they just don't have volume.

What the **** are you talking about? The Casimir effect occurs due to phase shifts, often referred to as vacuum energy.

Right, you're one of those astrologist who attributes every phenomena in nature to aether fluctuations.

This is exactly why I don't bother discussing physics with you people.

My God, you need to lighten up.

Astner is from Sweden, if he lightens up anymore he'll turn transparent.