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Volumn 78, Issue 8, 2008, Pages

Von Neumann-Wigner theorem in quantum dot molecules

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EID: 50049099631     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.78.085310     Document Type: Article
Times cited : (8)

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    • The relative error in the two-electron energies is estimated to be smaller than 5% based on calculations with eight and nine harmonic states in each Cartesian direction. At VL =25.46 meV, the computed spacing between the two lowest triplet energy levels is less than ∼1 μeV. By the inspection of the energy level slopes and wave function symmetry, we conclude that a crossing occurs at this point.
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    • The localization of the singlet and triplet states is determined at the point where the two lowest two-particle energy levels cross or anticross as detuning increases.
    • The localization of the singlet and triplet states is determined at the point where the two lowest two-particle energy levels cross or anticross as detuning increases.


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