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Eric Ling: Spacetime Extensions of the Big Bang

Time: Tue 2019-10-15 11.00 - 12.00

Location: Seminar Hall Kuskvillan, Institut Mittag-Leffler

Lecturer: Eric Ling, KTH Royal Institute of Technology


n this talk we show that a large class of \(k = -1\) inflationary FLRW spacetimes dubbed 'Milne-like' admit continuous spacetime extensions through the big bang. For these spacetimes the big bang is a coordinate singularity analogous to how the \(r = 2m\) event horizon in Schwarzschild is a coordinate singularity. The geometry of the big bang for Milne-like spacetimes is that of a lightcone in a spacetime conformal to Minkowski space where Lorentz invariance holds at the origin. We discuss how the mathematics of these spacetimes may help provide connections to certain problems in cosmology.

Belongs to: Department of Mathematics
Last changed: Oct 10, 2019