Lattice gauge theories with cold atoms

          @misc{ pirsa_PIRSA:15080036,
            doi = {10.48660/15080036},
            url = {https://pirsa.org/15080036},
            author = {Reznik, Benni},
            keywords = {Quantum Gravity},
            language = {en},
            title = {Lattice gauge theories with cold atoms},
            publisher = {Perimeter Institute},
            year = {2015},
            month = {aug},
            note = {PIRSA:15080036 see, \url{https://pirsa.org}}
          }
          

Abstract

Can high energy physics can be simulated by low-energy, nonrelativistic, many-body systems, such as ultracold atoms? Ultracold atomic systems lack the type of symmetries and dynamical properties of high energy physics models: in particular, they do not manifest local gauge invariance nor Lorentz invariance, which are crucial properties of the quantum field theories which are the building blocks of the standard model of elementary particles. However, it will be shown that there are ways to configure atomic system to manifest both local gauge invariance and Lorentz invariance. In particular, local gauge invariance can arise either as an effective, low energy, symmetry, or as an "exact" symmetry, following from the conservation laws in atomic interactions. Such quantum simulators may lead to new type of (table-top) experiments, to test various QCD phenomena, as the confinement of dynamical quarks, phase transitions, and other effects.