Which Books Simplify Weights and Roots in Lie Algebra?

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Discussion Overview

The discussion revolves around finding books that simplify the concepts of Weights and Roots in Lie Algebra, particularly in the context of their application in physics. Participants express their experiences with various texts and seek recommendations that might clarify these topics.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant mentions confusion with the notes on Weights and Roots in "Lie Algebra in Particle Physics" by Howard Georgi and seeks alternative recommendations.
  • Another participant suggests "Introduction to Lie Algebras and Representation Theory" by Humphreys as a potential resource.
  • A third participant recommends "Lectures on Lie Groups" by Hsiang, noting its mathematical focus.
  • One participant expresses a desire for a physics-oriented book, indicating that they will try the suggested texts regardless.
  • A different participant mentions that Brian Hall's book is nice but not physics-oriented, sharing their experience that the definitions of roots and weights were understandable up to a certain point.
  • Another reiterates that Hsiang's book is purely mathematical and lacks applications to physics.

Areas of Agreement / Disagreement

Participants do not reach a consensus on a single recommended book, as there are multiple suggestions with varying focuses (mathematical vs. physics-oriented) and some express differing levels of satisfaction with the clarity of the materials.

Contextual Notes

Some participants note the lack of physics applications in certain recommended texts, which may limit their usefulness for those specifically seeking physics-oriented explanations of Weights and Roots.

Who May Find This Useful

Readers interested in Lie Algebra, particularly in the context of physics, and those seeking resources that clarify the concepts of Weights and Roots may find this discussion beneficial.

praharmitra
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Hi,

I am currently studying Lie Algebra in Particle Physics' by Howard Georgi. I am finding the notes on Weights and Roots quite confusing. Can anyone suggest another book which explains this bit in a better fashion?
 
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praharmitra said:
Hi,

I am currently studying Lie Algebra in Particle Physics' by Howard Georgi. I am finding the notes on Weights and Roots quite confusing. Can anyone suggest another book which explains this bit in a better fashion?

Humphreys,
Introduction to Lie algebras and representation theory

See also
http://en.wikipedia.org/wiki/Weight_(representation_theory )
 
Last edited by a moderator:
If you are mathematically inclined, this is a good one:

Hsiang - Lectures on Lie groups
 
Thanks for the replies. I will try out the books you have mentioned. However, ii was looking for a book that is more physics orientated. I will try both nonetheless.
 
The one by Brian Hall is nice, but not at all physics oriented. I haven't had time to read the whole book though. The definitions of roots and weights is roughly where I stopped reading, so I can't really comment on the material after that (but the definitions were easy enough to understand).
 
Last edited:
torquil said:
If you are mathematically inclined, this is a good one:

Hsiang - Lectures on Lie groups

Perhaps I should also mention that this one has absolutely nothing to do with physics, i.e. no applications to physics. Just math.
 

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