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Rollercoaster Cosmology

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If you have a question about this talk, please contact Michalis Agathos.

Does inflation have to happen all in one go? The answer is a resounding no! All cosmological problems can be solved by a sequence of short bursts of cosmic acceleration, interrupted by short epochs of decelerated expansion. I will explain this simple and yet largely unexplored possibility, show you the proof, outline some simple realizations and discuss the consequences and implications, especially in light of the recent BICEP /Keck results and expected future searches.

This talk is part of the Wednesday HEP-GR Colloquium series.

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