10 citations · 20 across the 4 of their papers we have counts for
8 papers
A Localization Principle for Orbifold Theories
Tommaso de Fernex, Ernesto Lupercio, Thomas Nevins +1
In this article, written primarily for physicists and geometers, we survey several manifestations of a general localization principle for orbifold theories such as -theory, inde…
Stringy Chern classes of singular varieties
Tommaso de Fernex, Ernesto Lupercio, Thomas Nevins +1
Motivic integration and MacPherson's transformation are combined in this paper to construct a theory of "stringy" Chern classes for singular varieties. These classes enjoy strong b…
Differential Characters on Orbifolds and String Connections I
Ernesto Lupercio, Bernardo Uribe
In this paper we introduce the Cheeger-Simons cohomology of a global quotient orbifold. We prove that the Cheeger-Simons cohomology of the orbifold is isomorphic to its Beilinson-D…
Inertia Orbifolds, Configuration Spaces and the Ghost Loop Space
Ernesto Lupercio, Bernardo Uribe
In this paper we define and study the "ghost loop orbifold" of an orbifold consisting of those loops that remain constant in the coarse moduli space of . We construct a conf…
Deligne Cohomology for Orbifolds, discrete torsion and B-fields
Ernesto Lupercio, Bernardo Uribe
In this paper we introduce the concept of Deligne cohomology of an orbifold. We prove that the third Deligne cohomology group of a smooth étale groupoid classify gerbes with connec…
Loop Groupoids, Gerbes, and Twisted Sectors on Orbifolds
Ernesto Lupercio, Bernardo Uribe
The purpose of this paper is to introduce the notion of loop groupoid associated to a groupoid. After studying the general properties of the loop groupoid, we show how this notion…