Single-particle density matrix for a time-dependent strongly interacting one-dimensional Bose gas (CROSBI ID 156686)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Pezer, Robert ; Gasenzer, Thomas ; Buljan, Hrvoje
engleski
Single-particle density matrix for a time-dependent strongly interacting one-dimensional Bose gas
We derive a 1/c expansion for the single-particle density matrix of a strongly interacting time-dependent one-dimensional Bose gas, described by the Lieb-Liniger model (c denotes the strength of the interaction). The formalism is derived by expanding Gaudin’s Fermi-Bose mapping operator up to 1/c terms. We derive an efficient numerical algorithm for calculating the density matrix for time-dependent states in the strong coupling limit, which evolve from a family of initial conditions in the absence of an external potential. We have applied the formalism to study contraction dynamics of a localized wave packet upon which a parabolic phase is imprinted initially.
nonequilibrium dynamics; bosons; interactions
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Podaci o izdanju
80 (5)
2009.
053616-1-053616-7
objavljeno
1050-2947