Talk:Representations of the Lorentz group

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I didn't write this, I just moved material here which was written by Linas, whom I have called upon to write his own article the way he sees fit. I will not contribute any further to this article on representations of the Lorentz group.---CH (talk) 03:12, 17 July 2005 (UTC)

[edit] a bunch of stuff

the mood struck me, so I added a bunch of stuff to this article. This treatment comes from my memory of a QFT by Ryder, and well, I think it looks pretty sloppy. I guess somewhere we should find the represenation theory of the rotation group, upon which this is predicated. A longer exposition on how to form field equations for a given representation would be nice too. And uh, I guess... since the Lorentz group is noncompact, can I expect more than a discrete set of representations? I dunno. Help me out. -lethe ^{talk +} 12:36, 5 March 2006 (UTC)

[edit] Z/2?

In the article it mentions "for each j in Z/2, one has the (2j+1)-dimensional spin-j representation spanned by the spherical harmonics with j as the highest weight." in the section of finding representations. By Z/2 the author means ... -1/2, 0, 1/2, 1, 3/2, 2, .... But isn't Z/2 the group of integers modulo 2? In which case, the author is saying that the possible representations are labelled by the group {0,1}?

128.120.51.98 21:14, 4 January 2007 (UTC)kiwidamien

[edit] Z\2Z

You're thinking of the quotient group Z\2Z. --30apr2008