Concept
Mathématiques de la relativité générale
Publications associées (16)
Null energy constraints on two-dimensional RG flows
We study applications of spectral positivity and the averaged null energy condition (ANEC) to renormalization group (RG) flows in two-dimensional quantum field theory. We find a succinct new proof of the Zamolodchikov c-theorem, and derive further independ ...
New York2024What do gravitons say about (unimodular) gravity?
We revisit the problem of constraining the weak field limit of the gravitational lagrangian from S-matrix properties. From unitarity and Lorentz invariance of the S-matrix of massless gravitons, we derive on-shell gauge invariance to consist on the transve ...
SPRINGER2018Bayesian adaptation of chaos representations using variational inference and sampling on geodesics
A novel approach is presented for constructing polynomial chaos representations of scalar quantities of interest (QoI) that extends previously developed methods for adaptation in Homogeneous Chaos spaces. In this work, we develop a Bayesian formulation of ...
ROYAL SOC2018Effect of gravity framing on the overstrength and collapse capacity of steel frame buildings with perimeter special moment frames
Dimitrios Lignos, Ahmed Mohamed Ahmed Elkady
This paper investigates the effect of the gravity framing system on the overstrength and collapse risk of steel frame buildings with perimeter special moment frames (SMFs) designed in North America. A nonlinear analytical model that simulates the pinched h ...
Wiley-Blackwell2015