Microscopic scattering theory for interacting bosons in weak random potentials
Microscopic scattering theory for interacting bosons in weak random potentials
复制标题
弱随机势相互作用玻色子的微观散射理论
DOI:
10.1088/1367-2630/15/11/115015
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发表时间:
2013
影响因子:
3.3
通讯作者:
T. Wellens
中科院分区:
文献类型:
--
作者:
T. Geiger;A. Buchleitner;T. Wellens
We develop a diagrammatic scattering theory for interacting bosons in a three-dimensional, weakly disordered potential. Based on a microscopic N-body scattering theory, we identify the relevant diagrams including elastic and inelastic collision processes that are sufficient to describe diffusive quantum transport. By taking advantage of the statistical properties of the weak disorder potential, we demonstrate how the N-body dynamics can be reduced to a nonlinear integral equation of Boltzmann type for the single-particle diffusive flux. Our theory reduces to the Gross–Pitaevskii mean field description in the limit where only elastic collisions are taken into account. However, even at weak interaction strength, inelastic collisions lead to energy redistribution between the bosons—initially prepared all at the same single-particle energy—and thereby induce thermalization of the single-particle current. In addition, we include also weak localization effects and determine the coherent corrections to the incoherent transport in terms of the coherent backscattering signal. We find that inelastic collisions lead to an enhancement of the backscattered cone in a narrow spectral window for increasing interaction strength.
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DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
G. Schwiete;A. Finkelstein
通讯作者:
A. Finkelstein
影响因子:
8.6
作者:
M. Hartung;T. Wellens;C. Müller;K. Richter;P. Schlagheck
通讯作者:
P. Schlagheck
DOI:
10.1103/physrevb.49.12938
发表时间:
1994-02
期刊:
Physical review. B, Condensed matter
影响因子:
--
作者:
Giorgini;Pitaevskii;Stringari
通讯作者:
Giorgini;Pitaevskii;Stringari
影响因子:
8.6
作者:
Karpiuk, T.;Cherroret, N.;Miniatura, C.
通讯作者:
Miniatura, C.
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
T. Ernst;T. Paul;P. Schlagheck
通讯作者:
P. Schlagheck