192 citations · 1k across the 35 of their papers we have counts for
5 papers · 1 filter
Why am I me? and why is my world so classical?
Anthony Sudbery
This is an attempt to apply Nagel's distinction between internal and external statements to the interpretation of quantum mechanics. I propose that this distinction resolves the co…
How entangled can two couples get?
A. Higuchi, A. Sudbery
We describe a pure state of four qubits whose single-qubit density matrices are all maximally mixed and whose average entanglement as a system of two pairs of qubits appears to be…
The space of local equivalence classes of mixed two-qubit states
Anthony Sudbery
This paper is withdrawn by the author. It is superseded by Makhlin's paper quant-ph/0002045.
On local invariants of pure three-qubit states
Anthony Sudbery
We study invariants of three-qubit states under local unitary transformations, i.e. functions on the space of entanglement types, which is known to have dimension 6. We show that t…
Magic Squares of Lie Algebras
C. H. Barton, A. Sudbery
An improved (streamlined and extended) version of this paper is available as math.RA/0203010, which however omits some details. We recommend the later version unless details are es…