Classical rotons in cold atomic traps

H. Terc¸as; J. T. Mendonc¸a; V. Guerra

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Classical rotons in cold atomic traps

机译：冷原子陷阱中的经典ro

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We predict the emergence of a rotonminimum in the dispersion relation of elementary excitations in cold atomicngases in the presence of diffusive light. In large magneto-optical traps, multiple scattering of light is responsiblenfor the collective behavior of the system, which is associated to an effective Coulomb-like interaction between thenatoms. In optically thick clouds, the rescattered light undergoes diffusive propagation, which is responsible forna stochastic short-range force acting on the atoms. We show that the dynamical competition between these twonforces is by the appearance of a roton minimum in the dispersion relation. Making use of the fluctuation-dissipationntheorem, we show that the roton minimum is related to classical long-range order in the system.

机译：我们预测在散射光的存在下冷原子酶中基本激发的色散关系中出现最小增量。在大型磁光阱中，光的多次散射是系统的集体行为的原因，这与原子之间的有效库仑式相互作用有关。在光学上较厚的云中，散射的光进行扩散传播，这是作用在原子上的随机短程力的原因。我们表明，这两个力之间的动力竞争是通过色散关系中最小的rton出现。利用波动耗散定理，我们证明了鲁顿极小值与系统中的经典远程阶数有关。

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《PHYSICAL REVIEW A》 |2012年第5期|1-5|共5页
作者
H. Terc¸as; J. T. Mendonc¸a; V. Guerra;
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CFIF Instituto Superior T´ecnico Av. Rovisco Pais 1 1049-001 Lisboa PortugalInstitut Pascal PHOTON-N2 Clermont Universit´e Blaise Pascal University CNRS 24 Avenue des Landais 63177 Aubi`ere Cedex France;

CFIF Instituto Superior T´ecnico Av. Rovisco Pais 1 1049-001 Lisboa PortugalIPFN Instituto Superior T´ecnico Av. Rovisco Pais 1 1049-001 Lisboa Portugal;

IPFN Instituto Superior T´ecnico Av. Rovisco Pais 1 1049-001 Lisboa Portugal;

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1. Velocity diffusion and radiation trapping force in a one-dimensional expansion of cold atomic clouds in a magneto-optical trap [J] . Pradhan S, Mayya YS, Jagatap BN Physical Review, A. Atomic, molecular, and optical physics . 2007,第3aPta2期

机译：磁光阱中冷原子云的一维膨胀中的速度扩散和辐射俘获力
2. Comment on the paper "Microcanonical analysis of Boltzmann and Gibbs entropies in trapped cold atomic gases, KJ Higginbotham, DE Sheehy, Physica A 536(2019) 122547'' [J] . Hou Ji-Xuan Physica, A. Statistical mechanics and its applications . 2020,第1期

机译：评论“博尔兹曼和吉布斯熵在被困的冷原子气体，KJ Higginbotham，De Sheehy，Physica A 536（2019）122547''
3. Microcanonical analysis of Boltzmann and Gibbs entropies in trapped cold atomic gases [J] . Higginbotham Kenneth J., Sheehy Daniel E. Physica, A. Statistical mechanics and its applications . 2019,第期

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4. Electromagnetically induced transparency and extremely slow light in ultra-cold atomic gases in traps [C] . A.S.Troshin, N.A.Vasilev, SPIE-The International Society for Optical Engineering, International Workshop on Quantum Optics . 2004

机译：在陷阱中的超冷原子气体中电磁诱导的透明度和极慢的光
5. Development of a compact cold-atom atomic clock based on coherent population trapping. [D] . Blanshan, Eric M. 2014

机译：基于相干人口陷阱的紧凑型冷原子原子钟的开发。
6. Near-Resonant Imaging of Trapped Cold Atomic Samples [O] . L. You, Maciej Lewenstein 1996

机译：被困冷原子样品的近共振成像
7. Classical Rotons in Cold Atomic Traps [O] . Terças, H., Mendonça, J. T., Guerra, V. 2011

机译：冷原子陷阱中的古典罗盘
8. Velocity-Tunable Magneto-Optical -Trap-Based Cold Cs Atomic Beam [R] . Wang, H. , Buell, W. F. 2003

机译：基于速度可调的磁光 - 基于Ts的冷Cs原子束

Classical rotons in cold atomic traps

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