3 citations · 8 across the 4 of their papers we have counts for
4 papers
The thermal backreaction of a scalar field in de Sitter spacetime. II. Spectrum enhancement and holography
Antonis Kalogirou
We study a spacetime obtained from the semi-classical backreaction computed via the Thermofield dynamics approach in the Poincare patch of de Sitter spacetime. The resulting bulk e…
The thermal backreaction of a scalar field in de Sitter spacetime
Nikos Irges, Antonis Kalogirou, Fotis Koutroulis
We argue that a scalar field in de Sitter spacetime should feel explicit thermal effects associated with its curvature. Starting from the Bunch-Davies vacuum and a scalar field wit…
Ising Cosmology
Nikos Irges, Antonis Kalogirou, Fotis Koutroulis
Using arguments from holography we propose that the deviation of the cosmological spectral index of scalar fluctuations from unity may be controlled almost entirely by the cr…
Thermal effects in Ising Cosmology
Nikos Irges, Antonis Kalogirou, Fotis Koutroulis
We consider a real scalar field in de Sitter background and compute its thermal propagators. We propose that in a dS/CFT context, non-trivial thermal effects as seen by an 'out' ob…