7 papers
Boundary Conditions and Entanglement in Anti-de Sitter Space
Konstantinos Boutivas, Dimitrios Katsinis, Georgios Pastras +2
We study the entanglement entropy of a conformally coupled scalar field at its ground state in -dimensional AdS space in global coordinates. We consider spherical entangling…
A simple mechanism for the enhancement of the inflationary power spectrum
I. Dalianis, A. Katsis, N. Tetradis
The background evolution in two-field inflation can feature two distinct stages, corresponding to the evolution along two successive field directions. When the second stage occurs…
Computing - and -functions from entanglement
Konstantinos Boutivas, Dimitrios Katsinis, Georgios Pastras +1
We confirm the direct connection between entanglement entropy and the notion of irreversibility in the renormalization-group flow in the context of a simple theory for which a calc…
A Numerical Calculation of Entanglement Entropy in de Sitter Space
Konstantinos Boutivas, Dimitrios Katsinis, Georgios Pastras +1
The entanglement entropy of a massless scalar field in de Sitter space depends on multiple scales, such as the radius of the entangling surface, the Hubble constant and the UV cuto…
Entanglement on a Sphere
Konstantinos Boutivas, Dimitrios Katsinis, Georgios Pastras +2
We study the entanglement entropy of a massive scalar field in the background of the Einstein universe. We determine numerically the structure of the UV-divergent terms. We study a…
Entanglement Entropy of a Scalar Field in Anti-de Sitter Space
Konstantinos Boutivas, Dimitrios Katsinis, Ioannis Papadimitriou +2
We study the entanglement entropy of a free massive scalar field at its ground state in (3+1)-dimensional AdS space in global coordinates. We consider spherical entangling surfaces…