Test of finite temperature random-phase approximation on a Lipkin model

2009 ◽  
Vol 80 (4) ◽  
Author(s):  
K. Hagino ◽  
F. Minato
Keyword(s):  
Finite Temperature ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Phase Approximation ◽  
Lipkin Model

Relativistic Random Phase Approximation At Finite Temperature

2009 ◽  
Author(s):  
Y. F. Niu ◽  
N. Paar ◽  
D. Vretenar ◽  
J. Meng ◽  
Matko Milin ◽  
...  
Keyword(s):  
Finite Temperature ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Phase Approximation

Excitation spectrum of TTF-TCNQ: a finite temperature calculation

Open Physics ◽  
2013 ◽  
Vol 11 (1) ◽  
Author(s):  
Željana Lošić
Keyword(s):  
Excitation Spectrum ◽  
Finite Temperature ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Phase Approximation ◽  
Organic Conductor ◽  
Zero Temperature ◽  
Good Qualitative Agreement ◽  
Temperature Dependent ◽  
Temperature Calculation

AbstractIn this paper we study the excitation spectrum of the organic conductor tetrathiafulvalene-tetracyanoquinodimethane (TTF-TCNQ) using finite temperature calculations. The effect of electronelectron interaction is considered within the random phase approximation (RPA). Our results show the temperature dependent plasmon and dipolar mode corresponding qualitatively to the modes obtained previously using zero temperature formalism assigned to the observed excitations at 10 meV and 0.75 eV. These modes have an essential influence on the energy-loss function. The obtained results are in good qualitative agreement with the optical and EELS data of TTF-TCNQ.

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