Nonperturbative real-space renormalization group scheme for the spin-1/2 XXX Heisenberg model
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Date
2001-11-01ICR Author
Author
Degenhard, A
Type
Journal Article
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In this paper we apply an analytical real-space renormalization group formulation which is based on numerical concepts of the density-matrix renormalization group, Within a rigorous mathematical framework we construct nonperturbative renormalization group transformations for the spin-1/2 XXX Heisenberg model in the finite-temperature regime. The developed renormalization group scheme allows for calculating the renormalization group flow behavior in the temperature-dependent coupling constant. The constructed renormalization group transformations are applied within the ferromagnetic and the antiferromagnetic regime of the Heisenberg chain. The ferromagnetic fixed point is computed and compared to results derived by other techniques.
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Research team
Magnetic Resonance
Language
eng
License start date
2001-11-01
Citation
PHYSICAL REVIEW B, 2001, 64
Publisher
AMER PHYSICAL SOC