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Q: Fachverband Quantenoptik und Photonik

Q 21: Quantengase: Optische Gitter 1

Q 21.4: Vortrag

Dienstag, 13. März 2012, 11:15–11:30, V53.01

Optical lattice based quantum simulators for relativistic field theories — •Nikodem Szpak and Ralf Schützhold — Fakultät für Physik, Universität Duisburg- Essen

We show how (discretized) relativistic field theories emerge from the low energy regime of optical lattice systems loaded with ultra-cold atoms. In particular, we demonstrate a general mechanism of mass generation on the lattice and the apearance of pseudo-relativistic energy-momentum relation for quasi-particles, known for several particular systems. Our goal is to present the underlying mechanisms from a unified perspective, applicable for general Hubbard-like Hamiltonian systems, including also crystalline materials like graphene. We complete by giving examples in different geometric settings.

[1] N. Szpak and R. Schützhold, Phys. Rev. A 84, 050101(R) (2011)