181 citations · 587 across the 29 of their papers we have counts for
32 papers
The Weight of Little Strings: T-duality and Hasse Diagrams
Hamza Ahmed, Florent Baume, Paul-Konstantin Oehlmann
We study the worldvolume theories of stacks of heterotic NS5-branes probing a transverse singularity . We revisit and extend the original clas…
A Twist on Heterotic Little String Duality
Hamza Ahmed, Paul-Konstantin Oehlmann, Fabian Ruehle
In this work, we significantly expand the web of T-dualities among heterotic NS5-brane theories with eight supercharges. This is achieved by introducing twists involving outer auto…
A Heterotic Kähler Gravity and the Distance Conjecture
Javier José Murgas Ibarra, Paul-Konstantin Oehlmann, Fabian Ruehle +1
Deformations of the heterotic superpotential give rise to a topological holomorphic theory with similarities to both Kodaira-Spencer gravity and holomorphic Chern-Simons theory. Al…
Bounds and Dualities of Type II Little String Theories
Florent Baume, Paul-Konstantin Oehlmann, Fabian Ruehle
We explore the symmetry structure of Type II Little String Theories and their T-dualities. We construct these theories both from the bottom-up perspective starting with seed Superc…
The Frozen Phase of Heterotic F-theory Duality
Paul-Konstantin Oehlmann, Fabian Ruehle, Benjamin Sung
We study the duality between the Spin heterotic string without vector structure and F-theory with frozen singularities. We give a complete description in theorie…
T-Duality and Flavor Symmetries in Little String Theories
Hamza Ahmed, Paul-Konstantin Oehlmann, Fabian Ruehle
We explore the T-duality web of 6D Heterotic Little String Theories, focusing on flavor algebra reducing deformations. A careful analysis of the full flavor algebra, including Abel…
Calabi-Yau Genus-One Fibrations and Twisted Dimensional Reductions of F-theory
Lara B. Anderson, James Gray, Paul-Konstantin Oehlmann
In this brief note we explore the space of genus one and elliptic fibrations within CY manifolds, their organizing principles, and how they relate to the set of all CY manifolds. W…
Twisted Fibrations in M/F-theory
Lara B. Anderson, James Gray, Paul-Konstantin Oehlmann
In this work we investigate 5-dimensional theories obtained from M-theory on genus one fibered threefolds which exhibit twisted algebras in their fibers. We provide a base-independ…
6D Heterotic Little String Theories and F-theory Geometry: An Introduction
Michele Del Zotto, Muyang Liu, Paul-Konstantin Oehlmann
We review here some aspects of our recent works about the geometric engineering of heterotic little string theories using F-theory. Building on the seminal work by Aspinwall and Mo…
Geometric Bounds on the 1-Form Gauge Sector
Seung-Joo Lee, Paul-Konstantin Oehlmann
We classify the allowed structures of the discrete 1-form gauge sector in six-dimensional supergravity theories realized as F-theory compactifications. This provides upper bounds o…
The discrete Green-Schwarz mechanism in 6D F-Theory and Elliptic Genera of Non-Critical Strings
Markus Dierigl, Paul-Konstantin Oehlmann, Thorsten Schimannek
We study global anomalies of discrete gauge symmetries in six-dimensional supergravities and their realizations in F-theory. We explicitly construct a discrete Green-Schwarz mechan…
Back to Heterotic Strings on ALE Spaces: Part II -- Geometry of T-dual Little Strings
Michele Del Zotto, Muyang Liu, Paul-Konstantin Oehlmann
This work is the second of a series of papers devoted to revisiting the properties of Heterotic string compactifications on ALE spaces. In this project we study the geometric count…
Back to Heterotic Strings on ALE Spaces: Part I -- Instantons, 2-groups and T-duality
Michele Del Zotto, Muyang Liu, Paul-Konstantin Oehlmann
In this paper we begin revisiting the little string theories (LSTs) which govern the dynamics of the instantonic heterotic five-branes probing ALE singularities, b…
F-theory on 6D Symmetric Toroidal Orbifolds
Finn Bjarne Kohl, Magdalena Larfors, Paul-Konstantin Oehlmann
In this work we study F-theory on symmetric toroidal orbifolds that exhibit roto-translations, which are point group rotations accompanied by fractional lattice shifts. These geome…
-fibrations in F-theory and String Dualities
Lara B. Anderson, James Gray, Mohsen Karkheiran +2
In this work we study F-theory compactifications on elliptically fibered Calabi-Yau n-folds which have -fibered base manifolds. Such geometries, which we study in bot…
Gauged 2-form Symmetries in 6D SCFTs Coupled to Gravity
Andreas P. Braun, Magdalena Larfors, Paul-Konstantin Oehlmann
We study six dimensional supergravity theories with superconformal sectors (SCFTs). Instances of such theories can be engineered using type IIB strings, or more generally F-Theory,…
Non-flat elliptic four-folds, three-form cohomology and strongly coupled theories in four dimensions
Paul-Konstantin Oehlmann
In this note we consider smooth elliptic Calabi-Yau four-folds whose fiber ceases to be flat over compact Riemann surfaces of genus in the base. These non-flat fibers contribut…
Non-Simply-Connected Symmetries in 6D SCFTs
Markus Dierigl, Paul-Konstantin Oehlmann, Fabian Ruehle
Six-dimensional N=(1,0) superconformal field theories can be engineered geometrically via F-theory on elliptically-fibered Calabi-Yau 3-folds. We include torsional sections in the…
GV-Spectroscopy for F-theory on genus-one fibrations
Paul-Konstantin Oehlmann, Thorsten Schimannek
We present a novel technique to obtain base independent expressions for the matter loci of fibrations of complete intersection Calabi-Yau onefolds in toric ambient spaces. These ca…
Modular Curves and Mordell-Weil Torsion in F-theory
Nadir Hajouji, Paul-Konstantin Oehlmann
In this work we prove a bound for the torsion in Mordell-Weil groups of smooth elliptically fibered Calabi-Yau 3- and 4-folds. In particular, we show that the set which can occur o…
F-Theory on Quotients of Elliptic Calabi-Yau Threefolds
Lara B. Anderson, James Gray, Paul-Konstantin Oehlmann
In this work we consider quotients of elliptically fibered Calabi-Yau threefolds by freely acting discrete groups and the associated physics of F-theory compactifications on such b…
An F-theory Realization of the Chiral MSSM with -Parity
Mirjam Cvetič, Ling Lin, Muyang Liu +1
Using F-theory we construct 4D SUGRA theories with the Standard Model gauge group, three chiral generations, and matter parity in order to forbid all dimension four ba…
Global tensor-matter transitions in F-theory
Markus Dierigl, Paul-Konstantin Oehlmann, Fabian Ruehle
We use F-theory to study gauge algebra preserving transitions of 6d supergravity theories that are connected by superconformal points. While the vector multiplets remain unchanged,…
F-theory on Quotient Threefolds with (2,0) Discrete Superconformal Matter
Lara B. Anderson, Antonella Grassi, James Gray +1
We explore 6-dimensional compactifications of F-theory exhibiting (2,0) superconformal theories coupled to gravity that include discretely charged superconformal matter. Beginning…