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Calendar of Physics Talks Vienna
| Nothing is certain in string compactifications |
| Speaker: | Miguel Montero (Harvard U.) |
| Abstract: | A bubble of nothing is a spacetime instability where a compact dimension collapses. After nucleation, it expands at the speed of light, leaving "nothing" behind. There are a couple of robust mechanisms that can prevent the existence of a bubble: Either it is not energetically favourable to produce them, or there is a topological obstruction to their existence. The latter is often the case with SUSY-preserving boundary conditions. I will explain how to understand the topological obstruction in detail using bordism, which will show that it is very generically absent even for a SUSY-compatible spin structure. [...] |
| Date: | Thu, 18.06.2020 |
| Time: | 16:00 |
| Duration: | 60 min |
| Location: | online |
| Contact: | Niccolo Cribiori |
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