Spin 0 Particles: Tachyon & Beyond

  • Context: Graduate 
  • Thread starter Thread starter Chaos' lil bro Order
  • Start date Start date
  • Tags Tags
    Tachyon
Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
9 replies · 6K views
Chaos' lil bro Order
Messages
682
Reaction score
2
The tachyon has a spin of 0, does any other particle have a spin of 0?
 
Physics news on Phys.org
cristo said:
Any scalar field particle, like the Higgs, has spin zero. Of course, we've not observed one (yet) so these are hypothetical particles.

What is a "scalar field particle"?
 
Vanadium 50 said:
I have trouble with this. First, nobody has seen a tachyon. Second, a spin-1/2 or spin-1 tachyon is no more and no less likely than a spin-0 tachyon.
This I think refers to the tachyon "problem" in string theories, which is the lowest angular momentum particle along the trajectory (so is probably a scalar :rolleyes:).
 
Vanadium 50 said:
I have trouble with this. First, nobody has seen a tachyon. Second, a spin-1/2 or spin-1 tachyon is no more and no less likely than a spin-0 tachyon.

This may be a stupid question, but would a spin 1/2 tachyon break the Lorentz symmetry?
 
Ack. Yes. Stupid questions. Tachyons break Lorentz invariance anyway.

Dammit Ben...THINK!
 
BenTheMan said:
Ack. Yes. Stupid questions. Tachyons break Lorentz invariance anyway.

Dammit Ben...THINK!

Maybe *I* am the one not thinking but I don't see that a tachyon breaks Lorentz invariance. They may give problems with causality and other stuff but I don't think they break Lorentz invariance (if they do, in what way?) For example, if they travel faster than c in one frame, that will be the case in all frames. Maybe I am missing something obvious. I have never worked much with theories with tachyons but I thougth they were always written in a Lorentz inavraint form.