Boundary conditions and infrared divergences

Autor: Lissa de Souza Campos, Claudio Dappiaggi, Luca Sinibaldi

Publikováno v: Physics Letters B, Vol 848, Iss , Pp 138348- (2024)

We review the procedure to construct quasi-free ground states, for real scalar fields whose dynamics is dictated by the Klein-Gordon equation, on standard static Lorentzian manifolds with a time-like boundary. We observe that, depending on the assign

Externí odkaz: https://doaj.org/article/c736bc657de8465394458bd08049455c

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Non-Oscillatory Power Spectrum From States of Low Energy in Kinetically Dominated Early Universes

Autor: Mercedes Martín-Benito, Rita B. Neves, Javier Olmedo

Publikováno v: Frontiers in Astronomy and Space Sciences, Vol 8 (2021)

Recently, States of Low Energy (SLEs) have been proposed as viable vacuum states of primordial perturbations within Loop Quantum Cosmology (LQC). In this work we investigate the effect of the high curvature region of LQC on the definition of SLEs. Sh

Externí odkaz: https://doaj.org/article/03d0badec15e4d338f66c6093c63463b

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On the Necessity of Horizons – Disputing the Existence of Hawking Radiation from Horizon-Less Objects

Autor: Andersen, Eline Prytz

Publikováno v: Andersen, Eline Prytz. On the Necessity of Horizons – Disputing the Existence of Hawking Radiation from Horizon-Less Objects. Master thesis, University of Oslo, 2021

Externí odkaz: http://hdl.handle.net/10852/88794
https://www.duo.uio.no/bitstream/handle/10852/88794/1/Thesis.pdf