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Novel Polaron State for Single Impurity in a Bosonic Mott Insulator

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arxiv 1110.6466 v1 pith:5QUZHLGL submitted 2011-10-28 cond-mat.quant-gas cond-mat.supr-con

Novel Polaron State for Single Impurity in a Bosonic Mott Insulator

classification cond-mat.quant-gas cond-mat.supr-con
keywords polaronatombosoniccoldimpurityinsulatormottnovel
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We show that a single impurity embedded in a cold atom bosonic Mott insulator leads to a novel polaron that exhibits correlated motion with an effective mass and a linear size that nearly diverge at critical value of the on-site impurity-boson interaction strength. Cold atom technology can tune the polaron's properties and break up the composite particle into a deconfined impurity-hole and boson particle state at finite, controllable polaron momentum.

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