Spontaneous Peierls dimerization and emergent bond order in one-dimensional dipolar gases

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M. Di Dio, L. Barbiero, A. Recati, M. Dalmonte


arXiv:1304.5200v1 [cond-mat.quant-gas]

We investigate the effect of dipolar interactions in one-dimensional systems in connection with the possibility of observing exotic many-body effects with trapped atomic and molecular dipolar gases. By combining analytical and numerical methods, we show how the competition between short- and long-range interactions gives rise to frustrating effects which lead to the stabilization of spontaneously dimerized phases characterized by a bond-ordering. This genuine quantum order is sharply distinguished from Mott and spin-density wave phases, and can be unambiguously probed by measuring non local order parameters in-situ imaging techniques.