Non‐Markovian theory of collisional dephasing in near resonance light scattering
Non‐Markovian theory of collisional dephasing in near resonance light scattering
复制标题
近共振光散射中碰撞相移的非马尔可夫理论
DOI：
10.1063/1.438689
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发表时间：
1979
影响因子：
4.4
通讯作者：
S. Mukamel
中科院分区：
文献类型：
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作者：
S. Mukamel
提出了受碰撞扰动的原子和分子的近共振光散射(RLS)的一般微观理论。该理论基于Fano和Ben-Ruven的四射散射理论。我们进行了系统的密度展开，证明了计算RLS截面所需的四次、多体、偶极关联函数可以严格地表示为三个单粒子、两次关联函数，其中两个关联吸收和发射线展宽，第三个关联函数是互关联函数。我们最普遍的表达式适用于浴槽关联时间的任意值(相对于加宽)，并且从非均匀加宽的静态极限到相反的马尔可夫(均匀)极限一直平滑地内插。作为本公式的特例，还得到了Takagahara、Hanamura和Kubo的随机高斯模型。
We present a general microscopic theory for near resonance light scattering (RLS) from collisionally perturbed atoms and molecules. The theory is based on the tetradic scattering formalism of Fano and Ben‐Reuven. We perform a systematic density expansion and show that the four‐time, many‐body, dipole correlation functions necessary for the evaluation of the RLS cross section may be rigorously expressed (to lowest order in pressure) in terms of three single‐particle, two‐time, correlation functions, two of which are associated with the absorption and emission line broadening and the third is a cross correlation function. Our most general expressions are valid for an arbitrary value of the bath correlation time (relative to the broadening), and interpolate smoothly all the way from the static limit of inhomogenous broadening up to the reverse, the Markovian (homogenous) limit. The stochastic Gaussian model of Takagahara, Hanamura, and Kubo is obtained also as a special case of the present formulation.
DOI：
--
发表时间：
2016
期刊：
影响因子：
--
作者：
Yusuke Naito;Daisuke Nakayama;Kiminori Maeda
通讯作者：
Kiminori Maeda