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- aggregation classification "A1".
- aggregation creator B606821.
- aggregation creator person.
- aggregation creator person.
- aggregation date "2012".
- aggregation format "application/pdf".
- aggregation hasFormat 2119412.bibtex.
- aggregation hasFormat 2119412.csv.
- aggregation hasFormat 2119412.dc.
- aggregation hasFormat 2119412.didl.
- aggregation hasFormat 2119412.doc.
- aggregation hasFormat 2119412.json.
- aggregation hasFormat 2119412.mets.
- aggregation hasFormat 2119412.mods.
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- aggregation hasFormat 2119412.txt.
- aggregation hasFormat 2119412.xls.
- aggregation hasFormat 2119412.yaml.
- aggregation isPartOf urn:issn:1098-0121.
- aggregation language "eng".
- aggregation rights "I have transferred the copyright for this publication to the publisher".
- aggregation subject "Physics and Astronomy".
- aggregation title "Matrix product state based algorithm for determining dispersion relations of quantum spin chains with periodic boundary conditions".
- aggregation abstract "We study a matrix product state algorithm to approximate excited states of translationally invariant quantum spin systems with periodic boundary conditions. By means of a momentum eigenstate ansatz generalizing the one of Ostlund and Rommer [see S. Ostlund and S. Rommer, Phys. Rev. Lett. 75, 3537 ( 1995); S. Rommer and S. Ostlund, Phys. Rev. B 55, 2164 (1997)], we separate the Hilbert space of the system into subspaces with different momentum. This gives rise to a direct sum of effective Hamiltonians, each one corresponding to a different momentum, and we determine their spectrum by solving a generalized eigenvalue equation. Surprisingly, many branches of the dispersion relation are approximated to a very good precision. We benchmark the accuracy of the algorithm by comparison with the exact solutions and previous numerical results for the quantum Ising, the antiferromagnetic Heisenberg spin-1/2, and the bilinear-biquadratic spin-1 models.".
- aggregation authorList BK964058.
- aggregation issue "3".
- aggregation volume "85".
- aggregation aggregates 2137690.
- aggregation isDescribedBy 2119412.
- aggregation similarTo PhysRevB.85.035130.
- aggregation similarTo LU-2119412.