bhobba's latest activity

There is no one single definition of "particle" in physics. The paper @bhobba linked to talks about one popular meaning that can be...

You're still way too vague. Does your list of "things" include, e.g.: energy, entropy, the color red, music, love, thoughts and prayers...

That is what the paper I linked to examines. Thanks Bill

You need to define "anything". Things that physicists characterize as matter/material/substance are all made up of one or more of these...

Found it: https://www.physicsforums.com/threads/how-can-a-principle-produce-a-force.1052769/post-6918504 The paper is by Dyson &...

The 18 quantum fields already encompass anti-particles where appropriate. For example, the 4 complex components of the Dirac electron...

Because they're using different definitions of ordinary language words. That's why we don't do physics using ordinary language. We do it...

Love it. My definition is 'Particles are excited states of an underlying physical field, often called field quanta'. If you want to...

It seems to me a bit like saying all the people in the world are men, if we count women and children as part of "mankind".

There is matter, antimatter, radiation, possibly dark matter, possibly dark energy, spacetime (if you count that as something)...

So helium-4 atom doesn't occupy space?

According to this definition, gravity and EM radiation are not matter.

It depends on your definition of matter. If by matter you mean anything that can interact, then no, there isn't anything that isn't...

But they amount to unverifiable speculation.

What's nice about DH is it's an interpretation of any quantum theory. I.e. any theory with a non-commutative algebra of observables...