Phy5670/RPA: Difference between revisions
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====Polarization Propagator==== | ====Polarization Propagator==== | ||
To study excited states in meny-fermion systems, the limit of the two-particle (tp) propagator is used | |||
<math> G_{ph} (\alpha, \beta^{-1}; \gamma, \delta^{-1}; t-t') = \lim_{t_{\beta} \rightarrow t^{+}} | |||
\lim_{t_{\gamma} \rightarrow t'^{+}} G_{II} (\alpha t, \delta t', \beta t_{\beta}, \gamma t_{\gamma}) | |||
= -\frac{i}{\hbar} </math> | |||
====Random Phase Approximation==== | ====Random Phase Approximation==== | ||
====RPA in Finite Systems and the Schematic Model==== | ====RPA in Finite Systems and the Schematic Model==== | ||
Revision as of 15:25, 4 December 2010
Polarization Propagator
To study excited states in meny-fermion systems, the limit of the two-particle (tp) propagator is used
