Ryan E. Grady

collaborators

5 papers

gr-qc2026

Sharp Tangential NEC Minimization and Israel Surface Layers in Schwarzschild Mass Interpolations

Changsun Choi, Ryan E. Grady

We study static, spherically symmetric metrics in Schwarzschild gauge whose mass function increases smoothly from $M_{1}$ to $M_{2} > M_{1}$ across an annulus $[R_{1}, R_{2}]$ outside the large…

math.OA2026

Functoriality of the KSGNS Construction for Intertwiners of Strict Positive $C^{*}$ -Correspondences

Lucus Brady, Ryan Grady

We prove that the KSGNS construction can be viewed as an endofunctor on a category whose objects are positive $C^{*}$ -correspondences from a fixed $C^{*}$ -algebra and morphisms are giv…

math.QA2026

Causally Disjoint Discs: Another $E_{n}$ -operad

Ryan Grady

Motivated by (perturbative) quantum observables in Lorentzian signature we define a new operad: the operad of causally disjoint disks. In order to describe this operad we use the o…

math-ph2025

Adjoint L-Infinity Actions and Conserved Charges in GR

Changsun Choi, Ryan E. Grady

In this work we compute the conserved currents and charges associated to the action of an infinitesimal isometry (Killing field) in Einstein--Cartan--Palatini gravity. We offer a n…

math-ph2025

DGLA Actions: An Application in GR