11
votes
2answers
368 views
Is this a vertex algebroid?… What is vertex algebroid?
A couple of day ago, I was lamenting to a friend about the fact that I have no idea what vertex algebroids are.
During our discussion, I came up with a guess of what a vertex algeb …
13
votes
1answer
297 views
Character of parity-twisted supersymmetric VOA module — question inspired by the Stolz-Teichner program.
I'll begin with some background that is unnecessary for the actual question, but that might be interesting to the reader:
Topological modular forms ($TMF$) is a generalized cohomo …
11
votes
2answers
695 views
I’m looking for a Virasoro-module whose character is 1+ 240q+ 2160q^2+ 6720q^3…
Let $E_4(q)=1+ 240q+ 2160q^2+ 6720q^3+\ldots $ be the Eisenstein series of weight 4,
also known as the theta-series of the $E_8$-lattice.
I'm looking for a $\mathbb N$-graded vect …
30
votes
1answer
1k views
H^4 of the Monster
The Monster group $M$ acts on the moonshine vertex algebra $V^\natural$.
Because $V^\natural$ is a holomorphic vertex algebra (i.e., it has a unique irreducible module), there is …
11
votes
1answer
483 views
different N=2 SUSY structures on the chiral de Rham complex of a Calabi-Yau manifold?
The context
In a beautiful paper, Malikov-Schechtman-Vaintrob defined a canonical sheaf of vertex algebras equipped with a differential on any manifold $X$ (either in the $C^\inft …
10
votes
0answers
329 views
Is there a canonical map between the cohomology of orbifold Chiral de Rham on an orbifold and the cohomology of Chiral de Rham on a crepant resolution?
The two-variable elliptic genus is a topological invariant of almost-complex manifolds that takes values in power series. These power series turn out to describe weak Jacobi forms …

