Class Entanglement

Static renyi2

• renyi2(v: Vector, coordIndices: number[]): number

• Renyi-2 entanglement entropy for subsystem split A-B.

  see

  https://en.wikipedia.org/wiki/Entropy_of_entanglement

  note

  It can be optimized if we omit creating the full density matrix.

  Parameters

  • v: Vector

    Normalized vector representing a pure state.

  • coordIndices: number[]

    Indices related to a subsystem (either A or B).

  Returns number

  • log_2 Tr[rho_A^2]