116 citations · 321 across the 36 of their papers we have counts for
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Entanglement Entropy as a Probe Beyond the Horizon
Konstantinos Boutivas, Dimitrios Katsinis, Georgios Pastras +1
The entanglement entropy of a free field in de Sitter space is enhanced by the squeezing of its modes. We show analytically that the expansion induces a term in the entanglement en…
Encoding arbitrary Ising Hamiltonians on Spatial Photonic Ising Machines
Jason Sakellariou, Alexis Askitopoulos, Georgios Pastras +1
Photonic Ising Machines constitute an emergent new paradigm of computation, geared towards tackling combinatorial optimization problems that can be reduced to the problem of findin…
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 in -dimensional Free Scalar Field Theory: Tiptoeing between Continuum and Discrete Formulations
Dimitrios Katsinis, Georgios Pastras
We review some classic works on ground state entanglement entropy in -dimensional free scalar field theory. We point out identifications between the methods for the calculat…
Entanglement Entropy of a Scalar Field in a Squeezed State
Dimitrios Katsinis, Georgios Pastras, Nikolaos Tetradis
We study the entanglement entropy within a spherical region for a free scalar field in a squeezed state in 3+1 dimensions. We show that, even for small squeezing, a volume term app…