10.1k citations · 13.3k across the 91 of their papers we have counts for
Showing 2005Show all
3 papers · 1 filter
gr-qc2005★ 79 cited
Anti-de Sitter space, squashed and stretched
Ingemar Bengtsson, Patrik Sandin
We study the Lorentzian analogues of the squashed 3-sphere, namely 2+1 dimensional anti-de Sitter space, squashed or stretched along fibres that are either spacelike or timelike. T…
quant-ph2005
Geometrical Statistics--Classical and Quantum
Ingemar Bengtsson
This is a review of the ideas behind the Fisher--Rao metric on classical probability distributions, and how they generalize to metrics on density matrices. As is well known, the un…
quant-ph2005★ 29 cited
On the structure of the body of states with positive partial transpose
Stanislaw Szarek, Ingemar Bengtsson, Karol Zyczkowski
We show that the convex set of separable mixed states of the 2 x 2 system is a body of constant height. This fact is used to prove that the probability to find a random state to be…