Speaker
ARTHUR,ELIAS LIPSTEIN
(Durham University)
Description
Cosmological observations suggest that the early universe was approximately described by a de Sitter geometry. In this background, the natural observables are in-in correlators, which can be computed by squaring the wavefunction of the Universe. Surprisingly, it turns out that in-in correlators are often much simpler than wavefunction coefficients and are closely related to scattering amplitudes in flat space. In this talk, I will make these statements more precise and describe new approaches which make the simplicity of in-in correlators manifest.
Link to publication (if applicable)
https://arxiv.org/pdf/2312.13803.pdf
Author
ARTHUR,ELIAS LIPSTEIN
(Durham University)
