Exact decay and tunnelling dynamics of interacting few-boson systems

被引：39

作者：

Lode, Axel U. J. ^{[1
]}

Streltsov, Alexej I. ^{[1
]}

Alon, Ofir E. ^{[1
]}

Meyer, Hans-Dieter ^{[1
]}

Cederbaum, Lorenz S. ^{[1
]}

机构：

[1] Heidelberg Univ, Inst Phys Chem, D-69120 Heidelberg, Germany

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 2009年 / 42卷 / 04期

关键词：

COMPLEX ABSORBING POTENTIALS; EINSTEIN CONDENSATION; IMPENETRABLE BOSONS; PROPAGATING WAVEPACKETS; MOLECULAR-DYNAMICS; NOBEL LECTURE; WAVE-PACKET; GAS; RESONANCES; MODEL;

D O I：

10.1088/0953-4075/42/4/044018

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The decay and tunnelling dynamics of repulsive few-boson systems through a one-dimensional potential barrier is studied from first principles. To this end, we solve the numerically exact time-dependent few-boson Schrodinger equation by utilizing the successful multiconfiguration time-dependent Hartree method. Benchmark results for a wide range of interactions are reported. Deviations from the time-dependent Gross-Pitaevskii approach are identified. Counterintuitively, the mean-field approach can overestimate the tunnelling times even for relatively weakly-interacting few-boson systems. Implications are discussed.

引用

页数：10

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