Entropy, fidelity, and double orthogonality for resonance states in two-electron quantum dots

Details Entropy, fidelity, and double orthogonality for resonance states in two-electron quantum dots Entropy, fidelity, and double orthogonality for resonance states in two-electron quantum dots

2010-03-01

arxiv.org/abs/1003.0468v1

Phys. Rev. A 81, 042518 (2010)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevA.81.042518

Resonance states of a two-electron quantum dot are studied using a variational expansion with both real basis-set functions and complex scaling methods. The two-electron entanglement (linear entropy) is calculated as a function of the electron repulsion at both sides of the critical value, where the ground (bound) state becomes a resonance (unbound) state. The linear entropy and fidelity and double orthogonality functions are compared as methods for the determination of the real part of the energy of a resonance. The complex linear entropy of a resonance state is introduced using complex scaling formalism.

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