I am starting something on U-duality at *supergravity*.

But all still very skeletal at the moment.

]]>I have further expanded the Idea-section and the list of commented references at *perturbative quantum field theory*.

(Not proof-read yet, need to run to catch a train.)

]]>I have expanded the Idea section at *state on a star-algebra* and added a bunch of references.

The entry used to be called “state on an operator algebra”, but I renamed it (keeping the redirect) because part of the whole point of the definition is that it makes sense without necessarily having represented the “abstract” star-algebra as a C*-algebra of linear operators.

]]>gave *2d TQFT* a slightly more informative Idea-section, highlighting the difference between the classical strict case classified by Frobenius algebras and the local/extended non-compact case classified by Calabi-Yau objects.

Added a reference by Abrams as a candidate for a first rigourous proof of the classification result via Frobenius algebras, and added citations for the local case (copied over from TCFT).

]]>quick note for *5-dimensional Chern-Simons theory*, for the moment just to record some references

added pointer to André Henriques’ recent MO comment here to *quantization of 3d Chern-Simons theory*. Should try to find time to work that into the entry.

gave *11d Chern-Simons theory* its own (brief, for the moment) entry (splitting off some material from *self-dual higher gauge theory*)

created *worldline formalism* to go with this Physics.SE answer

I gave *Seiberg-Witten theory* an Idea-paragraph, added the orinal reference and cross-linked with *N=2 D=4 super Yang-Mills theory* and with *electric-magnetic duality*.

added to *Donaldson theory* a pointer back to *Lagrangian correspondences and category-valued TFT*

I am adding to the $n$Lab further pointers here and there on Witten’s story $6d SCFT \stackrel{KK}{\to} 4d SYM \stackrel{KK}{\to} Langlands$. Added now to *self-dual string* a pointer to (Witten 95), which I suppose is the first observation of the self-dual string and its ADE classification.

a beginning at geometric Langlands correspondence

]]>added a brief historical comment to *Higgs field* and added the historical references

I am beginning to give the entry *FQFT* a comprehensive *Exposition and Introduction* section.

So far I have filled some genuine content into the first subsection *Quantum mechanics in Schrödinger picture*.

But I have to quit now. This isn’t even proof-read yet. So don’t look at it unless you feel more in editing-mood than in pure-reading-mood.

]]>I discovered that there was an ancient stub entry *canonical commutation relation*. Have given it a bit more content now.

stub for *confinement*, but nothing much there yet. Just wanted to record the last references there somewhere.

am in the process of adding some notes on how the D=5 super Yang-Mills theory on the worldvolume of the D4-brane is the double dimensional reduction of the 6d (2,0)-superconformal QFT in the M5-brane.

started a stubby *double dimensional reduction* in this context and added some first further pointers and references to *M5-brane*, to *D=5 super Yang-Mills theory* and maybe elsewhere.

But this still needs more details to be satisfactory, clearly.

]]>started something stubby at *Liouville theory*, for the moment just so as to record some references and provide for a minimum of cross-links (e.g. with Chern-Simons gravity).

(also created a stub for quantum Teichmüller theory in the course of this, but nothing there yet except a pointer to reviews)

]]>started *topologically twisted D=4 super Yang-Mills theory*, in order to finally write a reply to that MO question we were talking about. But am being interrupted now…

added a bunch of pointers to the literature (with brief comments) at *string scattering amplitude*.

Also added a corresponding paragraph at *effective field theory*.

(this is still in reaction to that MO discussion, specifically to the question here)

]]>added to *S-matrix* a useful historical comment by Ron Maimon (see there for citation)

created a brief entry *IKKT matrix model* to record some references. Cross-linked with *string field theory*, and with *BFSS matrix model*

added a bit more text to the Idea-section at *Wick rotation* and in particular added cross-links with *Osterwalder-Schrader theorem*.

created a stub for *holographic entanglement entropy* in reaction to this MO question.

created stub for 6d (2,0)-supersymmetric QFT, mainly to record the references for the moment

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