Schmidt KP (2002)
Publication Status: Published
Publication Type: Journal article
Publication year: 2002
Publisher: ELSEVIER SCIENCE BV
Book Volume: 312
Pages Range: 527-528
The excitation spectrum of the 2-leg S = 1/2 Heisenberg ladder is examined perturbatively. Using an optimally chosen continuous unitary transformation, we expand the Hamiltonian and the Raman operator about the limit of isolated rungs leading to high order series expansions allowing to calculate spectral densities quantitatively. The 2-particle sector is examined for total momentum k = 0. We show that triplet-triplet interaction gives rise to a band splitting. (C) 2002 Elsevier Science B.V. All rights reserved.
APA:
Schmidt, K.P. (2002). Multi-particle excitations and spectral densities in quantum spin-systems. Physica B-Condensed Matter, 312, 527-528.
MLA:
Schmidt, Kai Phillip. "Multi-particle excitations and spectral densities in quantum spin-systems." Physica B-Condensed Matter 312 (2002): 527-528.
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