Bremen 2017 – wissenschaftliches Programm

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GR: Fachverband Gravitation und Relativitätstheorie

GR 13: Grundlegende Probleme und allgemeiner Formalismus

GR 13.3: Vortrag

Donnerstag, 16. März 2017, 14:55–15:10, SFG 0140

(A)dS at low and high velocity — •Lukas Brunkhorst — ZARM, Universität Bremen

From the standpoint of the Relativity postulate, Minkowski spacetime has two limiting cases: the Galilean and the Carrollian one. These arise if one is concerned with phenomena whose dynamics are either slow when compared with the speed of light or closely approaching it, respectively, and are geometrically represented by a degenerating of the metric and its inverse. It is of conceptual as well as practical interest to introduce gravity into these mathematically peculiar, though physically meaningful situations, which has been done for the Galilean case in terms of Newton-Cartan theory. We discuss the constant curvature spaces, with emphasis on the Carrollian case, by viewing them as the limits of de Sitter and Anti de Sitter spacetime.