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Periodized Thermal Greens Functions and Applications


Please use this identifier to cite or link to this item: http://hdl.handle.net/2077/32919

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Title: Periodized Thermal Greens Functions and Applications
Authors: Sabashvili, Andro
E-mail: andro.sabashvili@physics.gu.se
Issue Date: 30-Aug-2013
University: Göteborgs universitet. Naturvetenskapliga fakulteten
Institution: Department of Physics ; Institutionen för fysik
Parts of work: 1. Hugo U. R. Strand, Andro Sabashvili, Mats Granath, Bo Hellsing, and Stellan Östlund, Dynamical mean field theory phase-space extension and critical properties of the finite temperature Mott transition, Phys. Rev. B 83, 205136 (2011)
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2. Mats Granath, Andro Sabashvili, Hugo U. R. Strand, and Stellan Östlund, Discretized thermal Green’s functions, Ann. Phys. 524, No. 3–4, 147–152 (2012)
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3. Andro Sabashvili, Stellan Östlund, and Mats Granath, Bilayer graphene spectral function in the random phase approximation and self-consistent GW approximation, To be published in Phys. Rev. B.
Date of Defence: 2013-09-23
Disputation: Tid: 10:00AM, Plats: KB, Chalmers Campus Johanneberg, Kemig ̊arden 4.
Degree: Doctor of Philosophy
Publication type: Doctoral thesis
Keywords: condensed matter physics
Greens function
graphene
DMFT
RPA
GW
Abstract: This work describes a new formalism for Fermionic thermal Greens functions that are discretized in imaginary time. The discretization makes the thermal Greens function periodic in imaginary (Matsubara) frequency space and requires a generalisation of the Dyson equation and Luttinger-Ward-Baym-Kadanoff functional. A Pade method is used to perform an analytic continuation of the periodized Matsubara Greens function to real frequencies which conserves the spectral weight and thus the discontinuity ... more
ISBN: 978-91-628-8766-7
URI: http://hdl.handle.net/2077/32919
Appears in Collections:Doctoral Theses from University of Gothenburg / Doktorsavhandlingar från Göteborgs universitet
Doctoral Theses / Doktorsavhandlingar Institutionen för fysik

 

 

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