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Periodized Thermal Greens Functions and Applications

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Title: Periodized Thermal Greens Functions and Applications
Authors: Sabashvili, Andro
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)

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)

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
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
Appears in Collections:Doctoral Theses from University of Gothenburg / Doktorsavhandlingar från Göteborgs universitet
Doctoral Theses / Doktorsavhandlingar Institutionen för fysik



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