From effective Hamiltonians to fluctuation and dissipation

被引：2
作者：
Durand, Philippe [1 ]
Paidarova, Ivana
机构：
[1] Univ Toulouse 3, CNRS, UMR 5626, IRSAMC,LabPhys Quant, F-31062 Toulouse 4, France
[2] Acad Sci Czech Republic, J Heyrovsky Inst Phys Chem, CR-18223 Prague 8, Czech Republic
来源：
THEORETICAL CHEMISTRY ACCOUNTS | 2006年 / 116卷 / 4-5期
关键词：
effective Hamiltonian; projection techniques; Green function; fluctuation; dissipation; Fano profiles;
D O I：
10.1007/s00214-006-0101-9
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Irreversible quantum dynamics is reviewed by means of projected resolvents and effective Hamiltonians. It is shown that for a particular partition the dynamical equations are formally identical to the generalized Langevin equation of non-equilibrium statistical mechanics. Three model applications underline the fundamental role played by fluctuations to study line profiles in spectroscopy and to discuss the relationship between fluctuation and dissipation. A new expression of the parameter q characterizing Fano profiles is presented.
引用
收藏
页码：559 / 565
页数：7
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