A Monte Carlo algorithm is introduced to evaluate the Lehmann representation of the finite-temperature single-particle Green's function in the Lieb-Liniger model.
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Drude weight measurements in a 1D interacting Bose gas confirm nearly ballistic transport matching hydrodynamic theory even at finite temperature and interactions.
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Finite temperature single-particle Green's function in the Lieb-Liniger model
A Monte Carlo algorithm is introduced to evaluate the Lehmann representation of the finite-temperature single-particle Green's function in the Lieb-Liniger model.
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Characterising transport in a quantum gas by measuring Drude weights
Drude weight measurements in a 1D interacting Bose gas confirm nearly ballistic transport matching hydrodynamic theory even at finite temperature and interactions.