22 citations · 111 across the 9 of their papers we have counts for
9 papers
Orders of Vanishing and U(1) Charges in F-theory
Nikhil Raghuram, Andrew P. Turner
Many interesting questions about F-theory models, including several concerning the F-theory swampland, involve massless matter charged under U(1) gauge symmetries. It is therefore…
-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…
Automatic Enhancement in 6D Supergravity and F-theory Models
Nikhil Raghuram, Washington Taylor, Andrew P. Turner
We observe that in many F-theory models, tuning a specific gauge group and matter content under certain circumstances leads to an automatic enhancement to a larger gauge gr…
Moduli-dependent Calabi-Yau and SU(3)-structure metrics from Machine Learning
Lara B. Anderson, Mathis Gerdes, James Gray +3
We use machine learning to approximate Calabi-Yau and SU(3)-structure metrics, including for the first time complex structure moduli dependence. Our new methods furthermore improve…
General F-theory models with tuned symmetry
Nikhil Raghuram, Washington Taylor, Andrew P. Turner
We construct a general form for an F-theory Weierstrass model over a general base giving a 6D or 4D supergravity theory with gauge group $(\operatorname{SU}(3) \times \operatorname…
Large U(1) charges in F-theory
Nikhil Raghuram, Washington Taylor
We show that massless fields with large abelian charges (up to at least q = 21) can be constructed in 6D F-theory models with a U(1) gauge group. To show this, we explicitly constr…
Abelian F-theory Models with Charge-3 and Charge-4 Matter
Nikhil Raghuram
This paper analyzes U(1) F-theory models admitting matter with charges and . First, we systematically derive a construction that generalizes the previous examp…
Exotic matter on singular divisors in F-theory
Denis Klevers, David R. Morrison, Nikhil Raghuram +1
We analyze exotic matter representations that arise on singular seven-brane configurations in F-theory. We develop a general framework for analyzing such representations, and work…
Matter in transition
Lara B. Anderson, James Gray, Nikhil Raghuram +1
We explore a novel type of transition in certain 6D and 4D quantum field theories, in which the matter content of the theory changes while the gauge group and other parts of the sp…