Charge density correlations in (formula presented) ladders investigated by the contractor-renormalization method

Physical Review B - Condensed Matter and Materials Physics

Volumn 66, Issue 18, 2002, Pages 1-4

  Capponi, Sylvain ^a   Poilblanc, Didier ^a  

^a CNRS   (France)

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Indexed keywords

EID: 85038321158     PISSN: 10980121     EISSN: 1550235X     Source Type: Journal    
DOI: 10.1103/PhysRevB.66.180503     Document Type: Article

References (28)

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18. Details and extensions will be reported elsewhere;
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20. A similar procedure uses a decomposition in terms of two-site rungs, see J. Riera, Phys. Rev. B 66, 134523 (2002).
21. Within the two-site rung decoupling scheme no hole-pair-magnon bound state is found (Ref. 13) in contradiction with numerical results (Ref. 18). However, this result might apply to anisotropic ladders [J. Riera (private communication)].
22. (formula presented) and (formula presented) are defined as second-order corrections of the GS energy (per site) to a phase twist of the PBC and a change of the particle density, respectively;
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