Dynamics of excitations in a one-dimensional Bose liquid
classification
❄️ cond-mat.stat-mech
cond-mat.mes-hall
keywords
boseexcitationsliquidone-dimensionalcollectivecorrespondingdefiningdynamic
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We show that the dynamic structure factor of a one-dimensional Bose liquid has a power-law singularity defining the main mode of collective excitations. Using the Lieb-Liniger model, we evaluate the corresponding exponent as a function of the wave vector and the interaction strength.
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