[en] Exchange operator formalism describes many-body integrable systems using phase-space variables involving an exchange operator that acts on any pair of particles. We establish an equivalence between models described by exchange operator formalism and the complete infinite family of parent Hamiltonians describing quantum many-body models with ground states of Jastrow form. This makes it possible to identify the invariants of motion for any model in the family and establish its integrability, even in the presence of an external potential. Using this construction we establish the integrability of the long-range Lieb-Liniger model, describing bosons in a harmonic trap and subject to contact and Coulomb interactions in one dimension.We further identify a variety of models exemplifying the integrability of Hamiltonians in this family.
Disciplines :
Physique
Auteur, co-auteur :
YANG, Jing ; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)
DEL CAMPO ECHEVARRIA, Adolfo ; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)
Co-auteurs externes :
yes
Langue du document :
Anglais
Titre :
One-Dimensional Quantum Systems with Ground State of Jastrow Form Are Integrable
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See Supplemental Material at http://link.aps.org/supplemental/10.1103/PhysRevLett.129.150601 for details about the properties of the exchange operators, the projection operator to the bosonic and fermionic subspaces, derivations of Eq. (3), proof of integrability, and a user guide to construct one-dimensional integrable models as well as various examples, which includes Ref. [50] that does not appear in the reference section of the main text.
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