7 papers
Quantum Mutual Information in Time
James Fullwood, Zhen Wu, Arthur J. Parzygnat +1
While the quantum mutual information is a fundamental measure of quantum information, it is only defined for spacelike-separated quantum systems. Such a limitation is not present i…
Orientifold limits of singular -theory vacua
James Fullwood, Dongxu Wang
We construct global orientifold limits of singular -theory vacua whose associated gauge groups are SO(3), SO(5), SO(6), , SU(4), and Spin(7). For each limit we show a unive…
Stringy Hirzebruch classes of Weierstrass fibrations
James Fullwood, Mark van Hoeij
A Weierstrass fibration is an elliptic fibration whose total space may be given by a global Weierstrass equation in a -bundle over . In this note, we…
On integral structure types
James Fullwood
We introduce integral structure types as a categorical analogue of virtual combinatorial species. Integral structure types then categorify power series with possibly negative coeff…
On the Sen limit squared
James Fullwood, Dongxu Wang
We introduce a class of F-theory vacua which may be viewed as a specialization of the so-called fibration, and construct a weak coupling limit associated with such vacua whic…
Towards a simple characterization of the Chern-Schwartz-MacPherson class
James Fullwood, Dongxu Wang
For a large class of possibly singular complete intersections we prove a formula for their Chern-Schwartz-MacPherson classes in terms of a single blowup along a scheme supported on…