Date of Award
Doctor of Philosophy (PhD)
We study moduli spaces of boundary conditions in 2D topological field theories. To a compactly generated linear infinity-category X, we associate a moduli functor M_X parametrizing compact objects in X. The Barr-Beck-Lurie monadicity theorem allows us to establish the descent properties of M_X, and show that M_X is a derived stack. The Artin-Lurie representability criterion makes manifest the relation between finiteness conditions on X, and the geometricity of M_X. If X is fully dualizable (smooth and proper), then M_X is geometric, recovering a result of Toën-Vaquie from a new perspective. Properness of X does not imply geometricity in general: perfect complexes with support is a counterexample. However, if X is proper and perfect (symmetric monoidal, with ``compact = dualizable''), then M_X is geometric.
The final chapter studies the moduli of Noncommutative Calabi-Yau Spaces (oriented 2D-topological field theories). The Cobordism Hypothesis and Deligne's Conjecture are used to outline an approach to proving the unobstructedness of this space, and constructing a Frobenius structure on it.
Pandit, Pranav, "Moduli Problems in Derived Noncommutative Geometry" (2011). Publicly Accessible Penn Dissertations. 310.