Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Europhysics Letters (EPL)

Reply to the comment by A.A. Zvyagin and H. Johannesson on our paper “Quantum coherence in an exactly solvable one-dimensional model with defects”

Peter Schmitteckert, P. Schwab, Ulrich Eckern

Published Jul 10, 1996• 0 citations
Publisher

Abstract

The comment [CITE] by Zvyagin and Johannesson (ZJ) discusses some of the issues raised in our recent letter [CITE] in which we construct an exactly solvable one-dimensional quantum model, which corresponds to a Heisenberg- XXZ model or spinless fermions on a ring, with defects. In particular, we presented results for the finite-size corrections to the ground-state energy as well as for its flux sensitivity, as a function of a parameter ν which characterizes the strength of the defects.

DOI
10.1209/epl/i1996-00547-6

Related papers

Comment on “Quantum coherence in an exactly solvable one-dimensional model with defects”

Andrei A. Zvyagin, Henrik Johannesson

In a recent paper by Schmitteckert et al. , an exactly solvable XXZ chain with defects was studied. We here point out that, for this type of model, the critical exponents for the asymptotic correlation functions are insensitive to the presence of defects. Also, the defects do not enhance the persistent current of the equivalent fermionic model, contrary to a claim by Schmitteckert et al.

Europhysics Letters (EPL)•Jul 10, 1996•7 citations

Quantum Coherence in an Exactly Solvable One-dimensional Model with Defects

Peter Schmitteckert, P. Schwab, U. Eckern

Abstract. – Using the Quantum Inverse Scattering Method we construct an integrable Heisenberg-XXZ-model, or equivalently a model for spinless fermions with nearest-neighbour interaction, with defects. Each defect involves three sites with a fine tuning between nearest-neighbour and nextnearest-neighbour terms. We investigate the finite size corrections to the ground state energy and its dependence on an external flux as a function of a parameter ν, characterizing the strength of the defects. For intermediate values of ν, both quantities become very small, although the ground state wavefunction remains extended. ( ∗) Electronic mail:

•Jan 1, 1995•14 citations

Quantum Coherence in an Exactly Solvable One-Dimensional Model with Defects

Peter Schmitteckert, P. Schwab, Ulrich Eckern

Using the Quantum Inverse Scattering Method we construct an integrable Heisenberg-XXZ model, or equivalently a model for spinless fermions with nearest-neighbour interaction, with defects. Each defect involves three sites with a fine tuning between nearest-neighbour and next-nearest-neighbour terms. We investigate the finite-size corrections to the ground-state energy and its dependence on an external flux as a function of a parameter ν, characterizing the strength of the defects. For intermediate values of ν, both quantities become very small, although the ground-state wave function remains extended.

Europhysics Letters (EPL)•Jun 20, 1995•54 citations

Reply to the "Comment on 'Neel order in doped quasi one-dimensional antiferromagnets'"

Sebastian Eggert, Ian K. Affleck, Matthew D. P. Horton

In a recent comment by A.A. Zvyagin to our Letter [Phys. Rev. Lett. 89, 47202 (2002)] it was pointed out that the bosonization treatment of the antiferromagnetic Heisenberg chain is only valid in the low temperature and long length limit. We support this statement and quantify the limits of validity by explicitly showing the crossover to the high temperature and/or short length limit using a combination of bosonization formulas and numerical results.

arXiv:cond-mat/0210002•Sep 30, 2002•0 citations

Reply to comment on $lquot$Integrable Kondo impurity in one-dimensional q-deformed t$ndash$J models$rquot$

Xiangyu Ge, M. D. Gould, Jon Links +1 more

This is a reply to the comment by P Schlottmann and A A Zvyagin.

Journal of Physics A Mathematical and General•Jul 12, 2002•0 citations

Comment on “A New Class of Exactly Solvable Interacting Fermion Models in One Dimension”

Andrei A. Zvyagin

A Comment on the Letter by H. J. Schulz and B. Sriram Shastry, Phys. Rev. Lett. 80, 1924 (1998). The authors of the Letter offer a Reply.Received 10 March 1998DOI:https://doi.org/10.1103/PhysRevLett.82.2409©1999 American Physical Society

Physical Review Letters•Mar 15, 1999•6 citations
The comment [CITE] by Zvyagin and Johannesson (ZJ) discusses some of the issues raised in our recent letter [CITE] in which we construct an exactly solvable one-dimensional quantum model, which corresponds to a Heisenberg- XXZ model or spinless fermions on a ring, with defects. In particular, we presented results for the finite-size corrections to the ground-state energy as well as for its flux sensitivity, as a function of a parameter ν which characterizes the strength of the defects.
Abstract. – Using the Quantum Inverse Scattering Method we construct an integrable Heisenberg-XXZ-model, or equivalently a model for spinless fermions with nearest-neighbour interaction, with defects. Each defect involves three sites with a fine tuning between nearest-neighbour and nextnearest-neighbour terms. We investigate the finite size corrections to the ground state energy and its dependence on an external flux as a function of a parameter ν, characterizing the strength of the defects. For intermediate values of ν, both quantities become very small, although the ground state wavefunction remains extended. ( ∗) Electronic mail:
Using the Quantum Inverse Scattering Method we construct an integrable Heisenberg-XXZ model, or equivalently a model for spinless fermions with nearest-neighbour interaction, with defects. Each defect involves three sites with a fine tuning between nearest-neighbour and next-nearest-neighbour terms. We investigate the finite-size corrections to the ground-state energy and its dependence on an external flux as a function of a parameter ν, characterizing the strength of the defects. For intermediate values of ν, both quantities become very small, although the ground-state wave function remains extended.
Reply to comment on lquotlquotlquotIntegrable Kondo impurity in one-dimensional q-deformed tndashndashndashJ modelsrquotrquotrquot