Tuesday, November 13, 2012

1211.2704 (L. Tagliacozzo et al.)

Simulations of non-Abelian gauge theories with optical lattices    [PDF]

L. Tagliacozzo, A. Celi, P. Orland, M. Lewenstein
Many phenomena occurring in strongly correlated quantum systems still await conclusive explanations. The absence of isolated free quarks in nature is an example. It is attributed to quark confinement, whose origin is not yet understood. The phase diagram for nuclear matter at general temperatures and densities, studied in heavy-ion collisions, is largely conjectural. Finally, we have no definitive theory of high-temperature superconductivity. Though we have theories that could underlie such physics, we lack the tools to determine the experimental consequences of these theories. Quantum simulators may provide such tools. Here we show how to engineer quantum simulators of non-Abelian lattice gauge theories. The systems we consider have several applications: they can be used to mimic quark confinement or to study dimer and valence-bond states (which may be relevant for high-temperature superconductors).
View original: http://arxiv.org/abs/1211.2704

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