192 citations · 1.3k across the 33 of their papers we have counts for
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gr-qc2016★ 11 cited
Decoherence Can Relax Cosmic Acceleration: an Example
Tommi Markkanen
We investigate back reaction in de Sitter space in an approach where only states that are observationally accessible are included in the density matrix. Using the Bunch-Davies vacu…
hep-th2016★ 16 cited
Decoherence Can Relax Cosmic Acceleration
Tommi Markkanen
In this work we investigate the semi-classical backreaction for a quantised conformal scalar field and classical vacuum energy. In contrast to the usual approximation of a closed s…
gr-qc2016★ 34 cited
Massive scalar field evolution in de Sitter
Tommi Markkanen, Arttu Rajantie
The behaviour of a massive, non-interacting and non-minimally coupled quantised scalar field in an expanding de Sitter background is investigated by solving the field evolution for…