Seminar za algebru, ZCI QuantiXLie
U četvrtak, 7. srpnja u okviru Seminara za algebru, Ching Hung Lam, Academia Sinica, Taipei, održat će predavanje
Automorphism groups of cyclic orbifolds of lattice VOA
Sažetak:
Let $V$ be a vertex operator algebra(VOA) and $g\in Aut(V)$
a finite automorphism of $V$. The fixed point subset $V^{\langle
g\rangle}= \{x\in V| gx=x\} $ is a vertex subalgebra of $V$
and is often called a cyclic orbifold of $V$.
In this talk, we will discuss some general methods for computing
the full automorphism groups of cyclic orbifolds of lattice VOA.
It is clear that $N_{Aut (V)}( <g>) $ acts on the fixed point space $V^{<g>}$.
Therefore, the main question is to determine if there are automorphisms
which are not induced from $N_{Aut (V)}( <g>) $.
We will discuss a method to construct such kinds of "extra"
automorphisms and discuss some conjectures about this problem.
As examples, we will determine the full automorphism groups of some
orbifold VOAs associated with certain coinvariant lattices of the
Leech lattice.
Seminar počinje u 17:00 sati u predavaonici A101. Pozivaju se članovi Seminara i svi zainteresirani da prisustvuju ovom zanimljivom predavanju.
Veronika Pedić Tomić