8 papers · 1 filter
Axions on de Sitter space
Vasileios A. Letsios, Stathis Vitouladitis
We study a massless minimally coupled compact scalar, or axion, on global -dimensional de Sitter space (dS). We quantise the theory canonically, determine the quantum dS cha…
dS Metamorphosis
Dionysios Anninos, Chiara Baracco, Vasileios A. Letsios +1
We study the Euclidean path integral of higher spin gravity on . Based on a one-loop analysis, we are led to a gluing formula expressing the path integral in terms of an…
The complete action for de Sitter pure supergravity
Nicolas Boulanger, Vasileios A. Letsios, Sylvain Thomée
Supergravity theories in de Sitter spacetime are known to be very constrained, and rather unnatural within String/M Theory. We revisit the seminal paper by Pilch, van Nieuwenhuizen…
Unitary SUSY for the chiral graviton and chiral gravitino in de Sitter spacetime
Atsushi Higuchi, Vasileios A. Letsios
It is commonly believed that a unitary supersymmetric quantum field theory (QFT) involving graviton and gravitino fields on fixed 4-dimensional de Sitter spacetime () cannot…
Fermionic fields of higher spin in de Sitter space
Dionysios Anninos, Chiara Baracco, Vasileios A. Letsios +1
We consider fermionic fields of higher spin on a four-dimensional de Sitter background. A particular emphasis is placed on the Rarita-Schwinger spin- case. Both massi…
Unitary Rigid Supersymmetry for the Chiral Graviton and Chiral Gravitino in de Sitter Spacetime
Atsushi Higuchi, Vasileios A. Letsios
It is commonly believed that a unitary supersymmetric quantum field theory (QFT) involving graviton and gravitino fields on fixed 4-dimensional de Sitter spacetime () canno…