79 citations · 230 across the 7 of their papers we have counts for
14 papers
Polarizability and dynamic structure factor of the one-dimensional Bose gas near the Tonks-Girardeau limit at finite temperatures
Alexander Yu. Cherny, Joachim Brand
Correlation functions related to the dynamic density response of the one-dimensional Bose gas in the model of Lieb and Liniger are calculated. An exact Bose-Fermi mapping is used t…
Friction and diffusion of matter-wave bright solitons
Subhasis Sinha, Alexander Yu. Cherny, Dmitry Kovrizhin +1
We consider the motion of a matter-wave bright soliton under the influence of a cloud of thermal particles. In the ideal one-dimensional system, the scattering process of the quasi…
The Dynamic Structure Factor of the 1D Bose Gas near the Tonks-Girardeau Limit
Joachim Brand, Alexander Yu. Cherny
While the 1D Bose gas appears to exhibit superfluid response under certain conditions, it fails the Landau criterion according to the elementary excitation spectrum calculated by L…
Self-consistent calculation of the coupling constant in the Gross-Pitaevskii equation
A. Yu. Cherny, J. Brand
A method is proposed for a self-consistent evaluation of the coupling constant in the Gross-Pitaevskii equation without involving a pseudopotential replacement. A renormalization o…
Condensate fluctuations in the dilute Bose gas
Alexander Yu. Cherny
The fluctuations of a number of particles in the Bose-Einstein condensate are studied in the grand canonical ensemble with an effective single-mode Hamiltonian, which is derived fr…
Sum rule for the pair correlation function
A. Yu. Cherny
A sum rule has been derived for the static pair correlation function. This rule is the extension of the well-known equation that relates density fluctuation to compressibility. The…