2D multipartite valence bond states in quantum anti-ferromagnets

Autor(en)

Enrique Rico, Hans-Jürgen Briegel

Abstrakt

A quantum anti-ferromagnetic spin-1 model is characterised on a 2D lattice with the following requirements: (i) The Hamiltonian is made out of nearest neighbour interactions. (ii) It is homogeneous, translational and rotational invariant. (iii) The ground state is a real singlet state of SU(2) (non-chiral). (iv) It has a local spin-1 representation. Along the way to characterise the system, connections with classical statistical mechanics and integrable models are explored. Finally, the relevance of the model in the physics of low dimensional anti-ferromagnetic Mott–Hubbard insulators is discussed.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Leopold-Franzens-Universität Innsbruck

Journal

Annals of Physics

Band

323

Seiten

2115-2131

Anzahl der Seiten

17

ISSN

0003-4916

DOI

https://doi.org/10.1016/j.aop.2008.03.006

Publikationsdatum

2008

Peer-reviewed

Ja

ÖFOS 2012

103026 Quantenoptik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/8343a57e-6432-4a0f-a5e5-1f6a9842962e