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4 votes
1 answer
151 views

Derivation of self-dual gravity formulae

I am trying to read and understand this paper by Monteiro, Stark-Muchao, and Wikeley about self-dual yang-mills and self-dual gravity. In the introduction to this paper, they review a way to ...
1 vote
0 answers
39 views

Reference for dual gauge field and magnetic field being canonically conjugate

The gauge field operator in quantum Yang-Mills is canonically conjugate to the electric field. I know that the dual gauge field is canonically conjugate to the magnetic field, but I can't seem to dig ...
7 votes
1 answer
470 views

Isn't AdS/CFT an end to String theory as a fundamental theory?

I start with the Large $N$ QCD paper by 't Hooft. When 't Hooft published his paper on Large $N$ QCD it was clear why the string theory of hadrons due to Gabriele Veneziano could make sense. But at ...
Bastam Tajik's user avatar
  • 1,268
5 votes
1 answer
388 views

Can Montonen-Olive duality be used for studying $\mathcal{N}=4$ SYM at strong coupling? If not, why not?

It's all in the title. To be more complete, the following is stated in the preamble of the Wikipedia article about S-duality: One of the earliest known examples of S-duality in quantum field theory ...
Pxx's user avatar
  • 1,723
4 votes
0 answers
171 views

One-loop exactness of self-dual Yang-Mills theory

The self-dual Yang-Mills theory (gauge group $G$) with the action: $$ \mathcal{S} = \int_{M} \text{Tr} (B^{+} \wedge F) $$ where $B^{+}$ is a self-dual field, transforming in the adjoint ...
spiridon_the_sun_rotator's user avatar
5 votes
1 answer
208 views

The planar limit, self-duality and their relation to two dimensions

In the lecture notes by Beisert on integrability, it is stated that integrability is a property mainly in two-dimensional field theories, with some higher-dimensional examples. As higher-dimensional ...
user avatar
1 vote
0 answers
22 views

Checking modularity-like transformation property

Assume $M$ is a 4 manifold. Let $Z_v$ be partition function of fixed magnetic flux $v$ with all instanton configuration summed over where $v\in H^2(M,Z/nZ)$. $\tau$ denotes complex parameter on upper ...
user45765's user avatar
  • 411
2 votes
2 answers
253 views

Physical implication of $\textbf{E}\rightarrow\textbf{B},~~\textbf{B}\rightarrow -\textbf{E}$ invariance of the Maxwell's equations

An interesting observation to consider about the Maxwell's equation is that in absence of the sources, the equations are symmetric under the interchange $$\textbf{E}\rightarrow\textbf{B},~~\textbf{B}\...
SRS's user avatar
  • 26.8k
7 votes
1 answer
554 views

Why is Seiberg duality called an electromagnetic duality?

An electromagnetic duality is a duality that maps electric to magnetic degrees of freedom of two distinct theories. Apart from source-less Maxwell electrodynamics, other theories require magnetic ...
Diracology's user avatar
  • 17.8k
5 votes
2 answers
542 views

What S means in S-duality?

As I know, there are many dualities related to S-duality. For example, Montonen-Olive duality, Seiberg duality. and so on. so, I wonder that what "S" means in the term "S-duality". If this is a stupid ...
user avatar
1 vote
0 answers
115 views

On self-duality of N=4 super Yang Mills theories

I am looking at S-duality a bit, and was wondering if anyone had the answer to the following question. It is known that the supersymmetric Yang-Mills theory in 4 space dimensions is self-dual with ...
user30564's user avatar
9 votes
1 answer
362 views

What evidence do we have for S-duality in N=4 Super-Yang-Mills?

Do we have anything resembling a proof*? Or is it just a collection of "coincidences"? Also, do we have evidence from lattice gauge theory computations? *Of course I'm not talking about a proof in ...
user avatar
8 votes
1 answer
3k views

${\cal N}=4$ supersymmetric yang-mills theory and S-duality

[Question suggested by @Lawrence B. Crowell's answer to the question on T-duality] There are three parts to my question: A. What is the action for ${\cal N}=4$ SUSY Yang-Mills and what is the physics ...
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