Superluminality and predictability
- 👤 Speaker: Harvey Reall, DAMTP
- 📅 Date & Time: Wednesday 31 January 2018, 14:15 - 15:15
- 📍 Venue: MR2, Centre for Mathematical Sciences
Abstract
It is sometimes claimed that Lorentz covariant classical theories which allow superluminal propagation of signals are unviable because one can “violate causality” in such a theory by “building a time machine”. I will explain why such claims are unconvincing. I will then discuss a certain theory that can be formulated in either a superluminal or a subluminal form. It turns out that there is a sense in which the superluminal version is more predictive than the subluminal version. I will present theorems explaining why this is true more generally.
Series This talk is part of the Theoretical Physics Colloquium series.
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Harvey Reall, DAMTP
Wednesday 31 January 2018, 14:15-15:15