Seminars
General information
The group's seminar session is a friendly space where we encourage members, students, and professors, to show the progress they have been able to make during their research. All with the aim of sharing promoting an atmosphere of collaboration between the members of the group. The time spacetime-time coordinates of the seminars as well as the schedule for the present semester are below.
Location: Michael Valero's room, Department of Physics, Universidad del Valle.
Time: Mondays, 11 a.m.
NOTE: Talks can also be attended online. For doing so, follow the link at the corresponding time ( link_to_the_talk )
November 22th, 2022
Tittle: Construction of initial data sets for spacetimes with spatial topology S1XS2
Speaker: Leon Escobar-Diaz
Abstract
In this talk, we present a numerical approach for constructing initial data sets of inhomogeneous cosmological spacetimes with a spatial topology of S1XS2. The method is composed of two main parts. Firmeet.google.com/nfh-bbqk-apbstly, we use a 2+1 decomposition of the so-called constraint equations, which are a set of tensorial equations that determine the initial data in general relativity, to turn them into a certain hyperbolic system. Secondly, due to the spatial topology, the numerical part is carried out by the implementation of a pseudo-spectral method based on the so-called spin-weighted spherical harmonics. We discuss the suitability and accuracy of our numerical infrastructure against some exact initial data sets.