title: Four-qubit entanglement classification from string theory.
abstract: We invoke the black-hole-qubit correspondence to derive the classification of four-qubit entanglement. The U-duality orbits resulting from timelike reduction of string theory from D=4 to D=3 yield 31 entanglement families, which reduce to nine up to permutation of the four qubits.
authors.affiliation: Theoretical Physics, Blackett Laboratory, Imperial College London, London SW7 2AZ, United Kingdom. leron.borsten@imperial.ac.uk
authors.forename: L
authors.initials: L
authors.lastname: Borsten
authors.forename: D
authors.initials: D
authors.lastname: Dahanayake
authors.forename: M J
authors.initials: MJ
authors.lastname: Duff
authors.forename: A
authors.initials: A
authors.lastname: Marrani
authors.forename: W
authors.initials: W
authors.lastname: Rubens