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hep-th2021
De Sitter entropy as holographic entanglement entropy
Nikolaos Tetradis
We review the results of refs. [1,2], in which the entanglement entropy in spaces with horizons, such as Rindler or de Sitter space, is computed using holography. This is achieved…
gr-qc2021
Backreaction from inhomogeneous matter fields during large-scale structure formation
Stefan Floerchinger, Nikolaos Tetradis, Urs Achim Wiedemann
We study how inhomogeneities of the cosmological fluid fields backreact on the homogeneous part of energy density and how they modify the Friedmann equations. In general, backreact…
hep-th2021★ 16 cited
Entanglement entropy in FRW backgrounds
D. Giataganas, N. Tetradis
We use holography in order to study the entanglement entropy for a spherical entangling surface in a FRW background with an arbitrary time dependence of the scale factor. The calcu…