Constructing the Generators of SU(8) Group in String Theory

  • Context: Graduate 
  • Thread starter Thread starter robousy
  • Start date Start date
  • Tags Tags
    Generators Group
Click For Summary

Discussion Overview

The discussion revolves around the construction of the generators of the SU(8) group within the context of string theory. Participants explore theoretical approaches and practical considerations related to this topic.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant inquires about resources or methods for constructing the generators of the SU(8) group.
  • Another participant suggests that the structure constants are related to the Levi-Civita tensor and mentions the possibility of constructing them in the adjoint representation, while questioning the necessity of explicitly constructing the generators.
  • A third participant indicates their motivation for this construction is related to a string-inspired model building project focused on finding a flat direction.
  • A different participant advises that knowledge of the algebra may suffice for calculations, suggesting that explicit matrix forms of the generators may not be necessary.

Areas of Agreement / Disagreement

Participants express differing views on the necessity of explicitly constructing the generators, with some suggesting it may not be essential while others are focused on the construction itself. The discussion remains unresolved regarding the best approach to take.

Contextual Notes

Participants note the importance of commutation relations in calculations, indicating that assumptions about the necessity of explicit matrix forms may vary.

robousy
Messages
332
Reaction score
1
Hey folks,

Anyone have any idea where I might find the generators of the SU(8) group, or how I might construct them??

Thanks!

:smile:
 
Physics news on Phys.org


You could try this page as a starting point... if IIRC the structure constants are just the Levi-Civita tensor (up to a factor plus or minus i :smile:) so you could easily construct them in - for example - the adjoint representation.

But may I ask why on Earth you would want to explicitly construct them?
 


Thanks compuChip. I'm working on a string inspired model building project and I'm trying to find something called a flat direction. My supervisor has me looking at SU(8).
 


Hmm, sorry, cannot give you any sensible advise on that.
Let me just point out that, in what I've seen so far of string theory (in particular, and theoretical physics in general) one usually needs to know the algebra and there is no need to explicitly have the elements themselves expressed in some matrix form. So all I can recommend to you is: think carefully if there isn't a way to do the calculation knowing just the commutation relations.

But maybe someone more knowledgeable can give you more sensible ideas :smile:
 

Similar threads

  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 3 ·
Replies
3
Views
4K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 10 ·
Replies
10
Views
4K
  • · Replies 1 ·
Replies
1
Views
3K
  • · Replies 26 ·
Replies
26
Views
2K
  • · Replies 7 ·
Replies
7
Views
5K
  • · Replies 1 ·
Replies
1
Views
2K