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Volumn 68, Issue 3, 2003, Pages

Entanglement between a qubit and the environment in the spin-boson model

Author keywords

[No Author keywords available]

Indexed keywords

ENTROPY; GROUND STATE; HAMILTONIANS; MATHEMATICAL MODELS; NUMERICAL METHODS; OSCILLATIONS; PHASE TRANSITIONS;

EID: 0242442489     PISSN: 10502947     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article
Times cited : (98)

References (33)
  • 25
    • 0242422841 scopus 로고    scopus 로고
    • note
    • For lattice models, such as the Heisenberg spin chain, the density-matrix renormalization group (DMRG) technique gives reliable results and the NRG does not. It was recently suggested [T.J. Osborne and M.A. Nielsen, Quantum Info. Processing 1, 45 (2002)] that this is because the DMRG manifestly takes into account the entanglement, whereas the NRG does not. However, it is not necessary to use the DMRG here because the NRG is known to give reliable results for quantum impurity problems.
  • 32
    • 0242506133 scopus 로고    scopus 로고
    • note
    • The TBA equations are quite complicated for arbitrary anisotropies. For special anisotropies corresponding to dissipation strengths α = 1/v and α = 1 - 1/v, v=3, ⋯, the TBA equations are manageable and have been solved previously [14]. Going beyond this is very complicated, but technically possible [14].


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.