Spontaneous Parity Violation in a Quantum Spin Chain
Strongly Correlated Electrons
2013-01-14 v1
Abstract
We report on a spontaneous breakdown of parity in the ground state of a spin Hamiltonian involving nearest-neighbor interactions. This occurs for a one-dimensional model where spins transform under the gauge field representation of QCD, the eight-dimensional adjoint representation of SU(3). The ground state spontaneously violates parity and is two-fold degenerate. In addition, the model possesses a non-vanishing topological string order parameter which we explicate analytically.
Cite
@article{arxiv.0905.4895,
title = {Spontaneous Parity Violation in a Quantum Spin Chain},
author = {Stephan Rachel and Dirk Schuricht and Burkhard Scharfenberger and Ronny Thomale and Martin Greiter},
journal= {arXiv preprint arXiv:0905.4895},
year = {2013}
}
Comments
4 pages, 2 figures; Conference contribution to ICM 2009