7–12 Jul 2024
Aurum, the ‘Gabriele d’Annunzio’ University and ICRANet
Europe/Rome timezone

Bubble universe from flat spaces

8 Jul 2024, 17:40
20m
M5 (Palazzo Micara of the ‘Gabriele d’Annunzio’ University)

M5

Palazzo Micara of the ‘Gabriele d’Annunzio’ University

Viale Pindaro, 42, Pescara
Talk in a parallel session Inflation: perturbations, initial singularities and emergent universes Inflation: perturbations, initial singularities and emergent universes

Speaker

Eduardo Guendelman (Ben Gurion University)

Description

We show by matching two flat spaces one in Minkowski coordinates ( empty space) and the other in Minkowski coordinates after a special conformal transformation (also empty space) through a bubble with positive and constant surface tension, that the motion of the bubble is hyperbolic. If the surface tension is very big the initial size of the bubble is as small as we wish, so that we can indeed obtain an infinite universe out of empty spaces. The induced space in the bubble is de Sitter type.

Primary author

Eduardo Guendelman (Ben Gurion University)

Presentation materials

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Proceedings

Paper