Open Side Menu Go to the Top
FAQ Today's Posts Search Twitter Discord
Register
LHC Physics (Higgs and SUSY) LHC Physics (Higgs and SUSY)
Post Reply Subscribe
...
Page 3 of 3
First
Page 3 of 3
Go to page:
Go
1 2 3
Last
Go to page:
Go
Page 3 of 3
First
Page 3 of 3
Go to page:
Go
1 2 3
Last
Go to page:
Go
08-12-2008 , 12:56 PM
#51
thylacine
View Profile Send Message Find Posts By thylacine Find Threads By thylacine
Pooh-Bah
Join Date: Jul 2003 Posts: 4,029
FWIW spin comes from representations of the Lie group SU(2), right?

I've heard that particles can't have spin more than 2. Why is this?
LHC Physics (Higgs and SUSY) Quote
08-12-2008 , 01:27 PM
#52
Max Raker's Avatar
Max Raker
View Profile Send Message Find Posts By Max Raker Find Threads By Max Raker
Carpal \'Tunnel
Join Date: Apr 2005 Posts: 15,738
Quote:
Originally Posted by thylacine
FWIW spin comes from representations of the Lie group SU(2), right?

I've heard that particles can't have spin more than 2. Why is this?
Particles with spin +1/2 in three dimensions can be described by representations
of SU(2). Spin is pretty interesting in that it is something that has been "discovered" a few times, each time requiring deeper mathematics to understand.

There is no general proof that I know of, but consistent quantum field theories with massless particles of spin greater than 2 are thought not to exist. This is one of the reasons why string theory seems to require 11 dimensions, other numbers that initially seem reasonable require particles with greater than 2 spin.
LHC Physics (Higgs and SUSY) Quote
08-13-2008 , 04:13 PM
#53
teh_mewse's Avatar
teh_mewse
View Profile Send Message Find Posts By teh_mewse Find Threads By teh_mewse
adept
Join Date: Dec 2006 Posts: 1,026
Max, I'd like to say excellent post, I'm learning a lot, but I guess my understanding of physics is far too elementary.

I am, however, extremely interested in this subject. I was wondering what kind of classes one would take at university to understand all of this. I only took one physics class and it was basically : suzy goes down a ramp at this angle blah blah blah calculate blah blah blah. Eff that I wanna know how stuff interacts, not how to calculate it. What should I be taking?
LHC Physics (Higgs and SUSY) Quote
08-13-2008 , 07:49 PM
#54
Max Raker's Avatar
Max Raker
View Profile Send Message Find Posts By Max Raker Find Threads By Max Raker
Carpal \'Tunnel
Join Date: Apr 2005 Posts: 15,738
Quote:
Originally Posted by teh_mewse
Max, I'd like to say excellent post, I'm learning a lot, but I guess my understanding of physics is far too elementary.

I am, however, extremely interested in this subject. I was wondering what kind of classes one would take at university to understand all of this. I only took one physics class and it was basically : suzy goes down a ramp at this angle blah blah blah calculate blah blah blah. Eff that I wanna know how stuff interacts, not how to calculate it. What should I be taking?
In terms of college classes, I would look for something like modern physics for non-science majors. It won't be exactly modern, but hopefully will cover relativity and basic quantum mechanics, then it would make alot of the stuff you read about newer things more understandable.
LHC Physics (Higgs and SUSY) Quote
Page 3 of 3
First
Page 3 of 3
Go to page:
Go
1 2 3
Last
Go to page:
Go
Post Reply Subscribe
...
Page 3 of 3
First
Page 3 of 3
Go to page:
Go
1 2 3
Last
Go to page:
Go
      
Feedback is used for internal purposes. LEARN MORE
Contact Us Privacy Statement TOS
Top
Powered by:  Hand2Note
Copyright ©2008-2022, Hand2Note Interactive LTD
m