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2d
comment Two and Three point function of primary fields of arbitrary fields.
Conformal Four Point Functions and the Operator Product Expansion - arxiv.org/abs/hep-th/0011040
2d
asked Two and Three point function of primary fields of arbitrary fields.
Mar
23
comment Tension problem
Physics stackexchange should strongly discourage such posts.
Mar
20
accepted Idea behind Compactified Boson
Mar
20
comment Idea behind Compactified Boson
Splendid answer, thanks a lot!
Mar
18
comment Idea behind Compactified Boson
Hi, I think your explanation has some flaws/typos, cause if you carefully see the range it is from $(-2\pi R, 4\pi - 2\pi R)$, also you can't consider such kind of fields because they are not continuous/first order differentiable. If something like that occurs, the lagrangian picks up product of $\delta$'s and they are strict no-no in field theories.
Mar
18
comment Idea behind Compactified Boson
Oh, I believed "variation of $\phi(x)$" means the range of $\phi$ on the circle can be restricted. I was wondering how can one constrict the range by just adding a constant.
Mar
18
comment Flux through plane surface in hemisphere
How can you do that ?? Each point in the plane is not at the same distance from the charge, so you can't simply use the equation of solid angle. Do it by integration.
Mar
18
asked Idea behind Compactified Boson
Feb
18
accepted What is the idea behind counting the number of excited states and the representation of a group ?
Feb
16
accepted How to show OPE coefficients are symmetric in three indices ?
Feb
15
answered Basic QED - How are conserved charges expressions throught ladder operators derived?
Feb
15
comment How to show OPE coefficients are symmetric in three indices ?
Correct me if am wrong, consider $$ \langle \phi_1(z_1) \phi_2(z_2) \phi_3 (z_3) \rangle = \dfrac{c_{123}}{z_{12}^{h_2 + h_1 - h_3} z_{23}^{h_2 + h_3 - h_1} z_{13}^{h_1 + h_3 -h_2}} $$ which is same has $$ \langle \phi_1(z_1) \phi_3(z_3) \phi_2 (z_2) \rangle = \dfrac{c_{132}}{z_{13}^{h_1 + h_3 - h_2} z_{32}^{h_3 + h_2 - h_1} z_{12}^{h_1 + h_2 -h_3}} $$ owning to radial ordering, hence $ c_{123} = c_{132}$.
Feb
14
comment Torque and rotational motion
given a force and a reference point you can define torque, which is $\vec{r} \times \vec{F}$.
Feb
14
comment Torque and rotational motion
What do you mean by "torque is perpendicular to the axis of the rotation" ? Do you mean force ?
Feb
14
asked How to show OPE coefficients are symmetric in three indices ?
Jan
28
awarded  Nice Question
Sep
24
awarded  Autobiographer
Aug
5
comment What is the idea behind counting the number of excited states and the representation of a group ?
No, how to extend it for higher excited states. And how to identify such a mapping uniquely.
Aug
4
comment What is the idea behind counting the number of excited states and the representation of a group ?
Hi, I understood it for the second/third excited states, I wanted to know how it generalizes.