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• CommentRowNumber1.
• CommentAuthorUrs
• CommentTimeMay 15th 2019

to be !include-ed as a floating table of contents into relevant entries

• CommentRowNumber2.
• CommentAuthorDavid_Corfield
• CommentTimeMay 16th 2019

Should there be an entry ’I-II’, as mentioned here?

• CommentRowNumber3.
• CommentAuthorUrs
• CommentTimeMay 16th 2019

Yes, it’s not a comprehensive list yet. More basic entries such as IIA - IIB are missing at the moment. On the other hand, it’s going to be a redundant list, too, since in the end there are several ways through the web of dualities between any given pair of limiting theories.

• CommentRowNumber4.
• CommentAuthorDavid_Corfield
• CommentTimeMay 16th 2019

Perhaps one day we can have a large diagram with many arrows.

• CommentRowNumber5.
• CommentAuthorUrs
• CommentTimeMay 16th 2019

Yes! One day.

• CommentRowNumber6.
• CommentAuthorUrs
• CommentTimeMay 22nd 2019
• CommentRowNumber7.
• CommentAuthorUrs
• CommentTimeSep 16th 2019

expanded slightly

• CommentRowNumber8.
• CommentAuthorUrs
• CommentTimeJan 7th 2020

Have added more items under “string/QFT duality”

• CommentRowNumber9.
• CommentAuthorUrs
• CommentTimeJan 8th 2020

• CommentRowNumber10.
• CommentAuthorLuigi
• CommentTimeApr 21st 2020

• CommentRowNumber11.
• CommentAuthorUrs
• CommentTimeApr 21st 2020

Thanks. But shouldn’t we group it under “QFT-QFT duality” instead of under “string-QFT duality”?

I’d put it next to the item “KLT-relations”.

• CommentRowNumber12.
• CommentAuthorLuigi
• CommentTimeApr 22nd 2020

Ok, Thank you very much

I was not sure about the classification, since the Double Copy program wants to reach a well-defined duality between the whole NS-NS sector $(g,B,\phi)$ and gauge fields

• CommentRowNumber13.
• CommentAuthorUrs
• CommentTimeApr 22nd 2020

I see. So what’s the picture here of the most optimistic case of the classical double copy construction? Do we think of it as being really a version of AdS/CFT?

In any case, it might be good to group the “double copy” item together with the “KLT-relations”-item. These are close cousins, no?

• CommentRowNumber14.
• CommentAuthorLuigi
• CommentTimeApr 22nd 2020

I know just that they would like to relate solutions of the field equations of $(g,B,\phi)$ to the ones of a gauge field (see arXiv 1912.02177 for an example) in analogy with what happens in scattering amplitudes (see arXiv 1807.09859 for example). The relation with AdS/CFT is completely obscure, as far as I asked!

Yes, I definitely agree about grouping them: they are cousin, even if the scattering amplitude version of double copy are more specifically the BCJ(Bern-Carrasco-Johansson)-relations (which may deserve a page or a section in the KLT-relations one).

• CommentRowNumber15.
• CommentAuthorUrs
• CommentTimeApr 22nd 2020

Okay, thanks. So I have regrouped now to read as follows:

Here the parenthetical “super” should serve to imply the presence of KR- fields and dilaton fields.

• CommentRowNumber16.
• CommentAuthorLuigi
• CommentTimeApr 22nd 2020
• (edited Apr 22nd 2020)

Thank you very much, it looks good!

Adding “super” is very appropriate also because this $\text{gravity} \sim (\text{gauge theory})^2$ duality should have its supergravity counterpart