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10- Equations of motion for Green’s functions - Course on Quantum Many-Body Physics
Автор: Luis Gregorio Dias
Загружено: 2020-09-15
Просмотров: 8623
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Welcome to the course on Quantum Theory of Many-Body systems in Condensed Matter at the Institute of Physics - University of Sao Paulo (IF-USP).
In this class, we will cover:
Equations of motion for retarded Green’s functions.
Zubarev notation.
Example: resonant level model.
0:00 Introduction
1:48 Equations of motion for retarded Green's function
9:30 Equations of motion in frequency space
12:48 Free Hamiltonian model
15:43 Zubarev notation
19:52 Resonanl level model
24:26 Step 1: Commutators
39:24 Step 2: Equations of Motion
53:12 Spectral function
58:00 Fluctuation-dissipation theorem
1:01:26 Numerical example
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