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Ising tricriticality in the extended Hubbard model with bond dimerization

Abstract:

We explore the quantum phase transition between Peierls and charge-density-wave insulating states in the one-dimensional, half-filled, extended Hubbard model with explicit bond dimerization. We show that the critical line of the continuous Ising transition terminates at a tricritical point, belonging to the universality class of the tricritical Ising model with central charge c=7/10. Above this point, the quantum phase transition becomes first order. Employing a numerical matrix-product-state...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Accepted manuscript

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Publisher copy:
10.1103/PhysRevB.93.235118

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Department:
Oxford, MPLS, Physics, Theoretical Physics
Publisher:
American Physical Society Publisher's website
Journal:
Physical Review B Journal website
Volume:
93
Issue:
23
Publication date:
2016-06-10
Acceptance date:
2016
DOI:
EISSN:
2469-9950
ISSN:
2469-9969
Pubs id:
pubs:632264
URN:
uri:444f20eb-ebd4-4a7f-bbfd-f7a919ee5d02
UUID:
uuid:444f20eb-ebd4-4a7f-bbfd-f7a919ee5d02
Local pid:
pubs:632264
Keywords:

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