arXiv
Open Access
2016
Cosmological history in York time: inflation and perturbations
Philipp Roser
Antony Valentini
Abstrak
The constant mean extrinsic curvature on a spacelike slice may constitute a physically preferred time coordinate, `York time'. One line of enquiry to probe this idea is to understand processes in our cosmological history in terms of York time. Following a review of the theoretical motivations, we focus on slow-roll inflation and the freezing and Hubble re-entry of cosmological perturbations. We show how the mathematical account of these processes is distinct from the conventional account in terms of standard cosmological or conformal time. We also consider the cosmological York-timeline more broadly and contrast it with the conventional cosmological timeline.
Topik & Kata Kunci
Penulis (2)
P
Philipp Roser
A
Antony Valentini
Akses Cepat
Informasi Jurnal
- Tahun Terbit
- 2016
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- arXiv
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- Open Access ✓