805 citations · 4.8k across the 65 of their papers we have counts for
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gr-qc2013★ 84 cited
Quantum Vacuum Instability of 'Eternal' de Sitter Space
Paul R. Anderson, Emil Mottola
The Euclidean or Bunch-Davies O(4,1) invariant 'vacuum' state of quantum fields in global de Sitter space is shown to be unstable to small perturbations, even for a massive free fi…
gr-qc2013★ 121 cited
On the Instability of Global de Sitter Space to Particle Creation
Paul R. Anderson, Emil Mottola
We show that global de Sitter space is unstable to particle creation, even for a massive free field theory with no self-interactions. The O(4,1) de Sitter invariant state is a defi…