24 citations · 54 across the 4 of their papers we have counts for
5 papers
A tool for new Hybrid models: a swift algorithm to calculate the left inverse of a square root of a horizontally localized climatological ensemble covariance matrix
Francesco Sardelli, Craig Huntly Bishop
Computing matrix inverses (or, e.g., left inverses) using known algorithms is in general computationally prohibitive in high dimension, such as in an operational weather forecastin…
A Lorentz-Covariant Connection for Canonical Gravity
Marc Geiller, Marc Lachieze-Rey, Karim Noui +1
We construct a Lorentz-covariant connection in the context of first order canonical gravity with non-vanishing Barbero-Immirzi parameter. To do so, we start with the phase space fo…
Equivalence of the self-dual and Nambu-Goto strings
Winston J. Fairbairn, Karim Noui, Francesco Sardelli
We establish explicitely the relation between the algebraic and Nambu-Goto strings when the target space is a four dimensional flat space. We find that the two theories are exactly…
Canonical Analysis of Algebraic String Actions
Winston J. Fairbairn, Karim Noui, Francesco Sardelli
We investigate the canonical aspects of the algebraic first order formulation of strings introduced two decades ago by Balachandran and collaborators. We slightly enlarge the Lagra…
Spin-Foam Models and the Physical Scalar Product
Emanuele Alesci, Karim Noui, Francesco Sardelli
This paper aims at clarifying the link between Loop Quantum Gravity and Spin-Foam models in four dimensions. Starting from the canonical framework, we construct an operator P actin…