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Oct
17
awarded  Popular Question
Jul
22
awarded  Nice Question
Nov
28
asked Can any rank tensor be decomposed into symmetric and anti-symmetric parts?
Sep
27
awarded  Editor
Sep
27
revised What is the variation of Gauss-Bonnet term a total derivative of?
added 13 characters in body; edited title
Sep
25
comment Conformal transformation/ Weyl scaling are they two different things? Confused!
Thanks I am clear about this point and I understand "undoing" by multiplying by the inverse of the function still gives a different space time. Where as conformal transformation does not change space-time just different coordinate label. I would try and attach a link to that paper then you might be able to tell where I am going wrong but not on this point. Thanks
Sep
25
awarded  Supporter
Sep
25
asked What is the variation of Gauss-Bonnet term a total derivative of?
Sep
24
comment Conformal transformation/ Weyl scaling are they two different things? Confused!
Thanks a lot! it is clear when they are different. My confusion has to do with a paper I read. " Rev. Mod. Phys. 34, 442–457 (1962) Conformal Invariance in Physics" by L.Witten et al.. They talk about active point transformation and define a corresponding coordinate transformation to define a conformal transformation, which amounts to I think, rescaling the metric thus weyl transformation in our lingo. they call this $C_{g}$ however they say that special conformal transformation is a subgroup of these transformations with the usual lie-algebra in our lingo "conformal is a subgroup of weyl" ??
Sep
24
awarded  Student
Sep
24
asked Conformal transformation/ Weyl scaling are they two different things? Confused!