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Oct
17
comment Question on Tachyon Correlator (GSW)
Sorry if I'm so persistent about this :) I do see the issue with ordering of the states but that gives just rise to phase factors as explained also in the appendix (e.g. 7.A.30), right? So, as I said, somehow the zeromode contributions that cancel the 1/y stuff must come out of the basic two-point X correlator...I just don't see it :)
Oct
17
comment Question on Tachyon Correlator (GSW)
@Trimok: Thanks for your answers. My problem is that GSW say on page 432 that 7.A.22 is supposed to be the generalization of 7.A.11 including zero modes. Now those zero modes were (due to 7.A.16) responsible for cancelling the $\frac{1}{y_i...}$ factors so the must somehow come out of 7.A.22 here, mustn't they?
Oct
17
comment Question on Tachyon Correlator (GSW)
Wouldn't that change $(y_i-y_j)^{k_ik_j}$ to $(y_i-y_j)^{-k_ik_j}$? Btw, thanks for intervening at the physicsforums :D
Oct
16
comment Question on Tachyon Correlator (GSW)
@Trimok: I totally agree. I actually find it a bit weird, because they explicitely say that it is possible to get 7.A.17 from 7.A.12 and 7.A.22 on page 432 on the bottom. In fact this issue pops up in the later parts of chapter 7 for more complicated vertex operators as well..so I'm desperate to understand it :)
Oct
16
revised Question on Tachyon Correlator (GSW)
added 225 characters in body
Oct
15
asked Question on Tachyon Correlator (GSW)
Oct
4
accepted Mass dimension of coupling constants in various dimensions
Oct
2
asked Mass dimension of coupling constants in various dimensions
Oct
2
accepted Question on field strength tensor in YM
Oct
2
asked Question on field strength tensor in YM
Sep
5
answered How to verify gauge invariance of an amplitude
Apr
19
answered Ward Identity makes QED logarithmic divergent?
Apr
18
comment Why is Einstein gravity not renormalizable at two loops or more?
If you like my answer, you can accept it below :) Cheers.
Apr
18
comment Noether's identities
This sounds like it's related to Ward identities, doesn't it?
Apr
18
comment How to determine if an emergent gauge theory is deconfined or not?
Hope I'm not raising the dead here: but naively thinking, couldn't you try and compute the $\beta$-function and find out its sign? Like you do in QFTs normally?