18–19 Dec 2019
Centre for Particle Theory, Durham
Europe/London timezone

Scalar Fields in 2D de Sitter Space

19 Dec 2019, 10:00
30m
CM107 (Department of Mathematical Sciences)

CM107

Department of Mathematical Sciences

Speaker

Mr Lasse Schmieding (University of York)

Description

Unlike higher dimensional de Sitter spaces, two dimensional de Sitter space is not simply connected. The behaviour of the fields on making a full rotation of the spatial direction must therefore be specified. Previously, Epstein and Moschella have shown that anti-periodic real scalar fields have no analogue of a Bunch-Davies vacuum state. For complex scalar fields, more general behaviour is possible. I will discuss complex scalar field theories in two dimensional de Sitter space and then comment on the existence of de Sitter invariant and Hadamard states for these theories.

Primary author

Mr Lasse Schmieding (University of York)

Presentation materials

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