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Volumn 74, Issue 24, 2006, Pages

Ground state, quasihole, a pair of quasihole wave functions, and instability in bilayer quantum Hall systems

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EID: 33845417209     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.74.245311     Document Type: Article
Times cited : (12)

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    • We put quotes here because Eq. 20 is decoupled only in its face form. As shown explicitly in Ref., in the balanced case, there is a spin-charge separation only in the ground state. However, in any excited states such as meron excitations, there are spin-charge connection which leads to the correct meron fractional charge and polarization listed in Table 1 in Ref.. It is this spin-charge connection which leads to the constraint of the vortices in the two layers J0 v+ (x)= J0 v- (x)=-δ(x) used in this section and J0 v± =δ (x - z0) ±δ (x - w0) used in the next section.
    • We put quotes here because Eq. 20 is decoupled only in its face form. As shown explicitly in Ref., in the balanced case, there is a spin-charge separation only in the ground state. However, in any excited states such as meron excitations, there are spin-charge connection which leads to the correct meron fractional charge and polarization listed in Table 1 in Ref.. It is this spin-charge connection which leads to the constraint of the vortices in the two layers J0 v+ (x)= J0 v- (x)=-δ(x) used in this section and J0 v± =δ (x - z0) ±δ (x - w0) used in the next section.
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    • As shown in detail in Ref., the functional form achieved from the composite boson theory is the same at that achieved from the microscopic LLL+HF approach. But the coefficients should be taken from the LLL+HF approach.
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    • The same transformation is needed to transform the modulus of the quasi-hole wave function in SLQH at Laughlin's series ν=1 m with m odd Ψqh = i N1 zi Ψm back to its final form Ψqh = i N1 zi Ψm. To the best of the authors' knowledge, this very subtle and important point was not explicitly spelled out in any previous work.
    • The same transformation is needed to transform the modulus of the quasi-hole wave function in SLQH at Laughlin's series ν=1 m with m odd Ψqh = i N1 zi Ψm back to its final form Ψqh = i N1 zi Ψm. To the best of the authors' knowledge, this very subtle and important point was not explicitly spelled out in any previous work.
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    • It was shown in Ref. that although the quasihole and the meron wave functions listed in Eq. 1 are completely different at any finite distance, they have finite comparable expectation energies at d=0, So we expect the quasihole's expectation energy in Eq. 24 is comparable to both at d=0. However, as explained in the main text, all these wave functions are not interesting anymore at d=0.
    • It was shown in Ref. that although the quasihole and the meron wave functions listed in Eq. 1 are completely different at any finite distance, they have finite comparable expectation energies at d=0, So we expect the quasihole's expectation energy in Eq. 24 is comparable to both at d=0. However, as explained in the main text, all these wave functions are not interesting anymore at d=0.
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