Johanna Knapp

Sphere Partition Function of Calabi-Yau GLSMs

David Erkinger, Johanna Knapp

Journal article  |  2022  |  COMMUNICATIONS IN MATHEMATICAL PHYSICS

The sphere partition function of Calabi-Yau gauged linear sigma models (GLSMs) has been shown to compute the exact Kähler potentia..

D-Brane Central Charge and Landau-Ginzburg Orbifolds

Johanna Knapp, Mauricio Romo, Emanuel Scheidegger

Journal article  |  2021  |  COMMUNICATIONS IN MATHEMATICAL PHYSICS

We propose a formula for the exact central charge of a B-type D-brane that is expected to hold in all regions of the Kähler moduli..

GLSMs, joins, and nonperturbatively-realized geometries

Johanna Knapp, Eric Sharpe

Journal article  |  2019  |  JOURNAL OF HIGH ENERGY PHYSICS

In this work we give a gauged linear sigma model (GLSM) realization of pairs of homologically projective dual Calabi-Yaus that hav..

Refined swampland distance conjecture and exotic hybrid Calabi-Yaus

David Erkinger, Johanna Knapp

Journal article  |  2019  |  JOURNAL OF HIGH ENERGY PHYSICS

We test the refined swampland distance conjecture in the Kähler moduli space of exotic one-parameter Calabi-Yaus. We focus on exam..

GLSM realizations of maps and intersections of Grassmannians and Pfaffians

Andrei Caldararu, Johanna Knapp, Eric Sharpe

Journal article  |  2018  |  JOURNAL OF HIGH ENERGY PHYSICS

In this paper we give gauged linear sigma model (GLSM) realizations of a number of geometries not previously presented in GLSMs. W..

Beijing Lectures on the Grade Restriction Rule

Richard Eager, Kentaro Hori, Johanna Knapp, Mauricio Romo

Journal article  |  2017  |  CHINESE ANNALS OF MATHEMATICS SERIES B

The authors describe the relationships between categories of B-branes in different phases of the non-Abelian gauged linear sigma m..

Hemisphere partition function and monodromy

David Erkinger, Johanna Knapp

Journal article  |  2017  |  JOURNAL OF HIGH ENERGY PHYSICS

We discuss D-brane monodromies from the point of view of the gauged linear sigma model. We give a prescription on how to extract m..

Hemisphere partition function and analytic continuation to the conifold point

Johanna Knapp, Mauricio Romo, Emanuel Scheidegger

Journal article  |  2017  |  COMMUNICATIONS IN NUMBER THEORY AND PHYSICS

We show that the hemisphere partition function for certain U(1) gauged linear sigma models (GLSMs) with D-branes is related to a p..

Linear sigma models with strongly coupled phases - one parameter models

Kentaro Hori, Johanna Knapp

Journal article  |  2013  |  JOURNAL OF HIGH ENERGY PHYSICS

We systematically construct a class of two-dimensional (2, 2) supersymmetric gauged linear sigma models with phases in which a con..

PALP - a user manual

Andreas P Braun, Johanna Knapp, Emanuel Scheidegger, Harald Skarke, Nils-Ole Walliser

Book Chapter  |  2013

This article provides a complete user’s guide to version 2.1 of the toric geometry package PALP by Maximilian Kreuzer and others. ..