7 citations · 10 across the 4 of their papers we have counts for
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gr-qc2022★ 7 cited
Automorphic scalar fields in two-dimensional de Sitter space
Atsushi Higuchi, Lasse Schmieding, David Serrano Blanco
We study non-interacting automorphic quantum scalar fields with positive mass in two-dimensional de Sitter space. We find that there are no Hadamard states which are de Sitter inva…
gr-qc2019
Supergravity on a 3-torus: quantum linearization instabilities with a supergroup
Atsushi Higuchi, Lasse Schmieding
It is well known that linearized gravity in spacetimes with compact Cauchy surfaces and continuous symmetries suffers from linearization instabilities: solutions to classical linea…