Two polaron flavors of the Bose-Einstein condensate impurity

被引：41

作者：

Blinova, A. A. ^{[1
,2
]}

Boshier, M. G. ^{[1
]}

Timmermans, Eddy ^{[3
]}

机构：

[1] Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA

[2] Rice Univ, Dept Phys & Astron, Houston, TX 77251 USA

[3] Los Alamos Natl Lab, Div Theory, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW A | 2013年 / 88卷 / 05期

基金：

美国国家科学基金会;

关键词：

FESHBACH RESONANCES; RECOMBINATION; ANNIHILATION; POSITRONS; ATOMS;

D O I：

10.1103/PhysRevA.88.053610

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We show that repulsive neutral-atom impurities in a dilute gas Bose-Einstein condensate (BEC) can self-localize in bubble polaron states formally analogous to electron bubbles in helium. The BEC is then the first impurity host medium known to exhibit both Landau-Pekar polaron states akin to that of self-localized electrons in a dielectric lattice and self-localized bubble polaron states. We find that the neutral BEC-impurity system is fully characterized by only two dimensionless coupling constants and that a single BEC impurity can be steered adiabatically from the Landau-Pekar to the bubble region. The adiabatic change is that of a crossover, not a transition.

引用

页数：5

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