Matches in SemOpenAlex for { <https://semopenalex.org/work/W2736704994> ?p ?o ?g. }
Showing items 1 to 52 of
52
with 100 items per page.
- W2736704994 abstract "In this thesis, gluon spectral functions in SU(3) gauge theory are calculatedat finite temperature. The temperature range covers the confining regime below Tc tothe high temperature regime, where perturbation theory is applicable. The numericaltool is the Maximum Entropy Method (MEM) employing euclidean, non-perturbative,Landau gauge gluon propagators, obtained with the Functional Renormalisation Groupand Lattice QCD, as input. The spectral function is related to the propagators by anintegral equation. MEM is a complex multidimensional optimisation algorithm to invertsuch integral equations, corresponding to an analytic continuation of the numericaldata. A continuation of a discreet set of data cannot be unambiguous. The occuringambiguities are resolved by introducing a priori knowledge of the asymptotic shape ofthe spectral function, in the form of a model function. Thereby, MEM simultaneouslyoptimizes the spectral function to the input propagators and the model, leading to aunique model-dependent solution. Standard-MEM assumes positive definite spectralfunctions, whereas gluons show a violation of positivity in the spectral function, dueto confinement. Therefore, an extended-MEM algorithm is proposed. The main applicationof this thesis is the calculation of the shear viscosity in units of the entropydensity. A Kubo relation connects shear viscosity to the low frequency limit of a certainenergy-momentum tensor correlation function. For this correlation function a loop representationof finite order in terms of gluon spectral functions is derived. That allows tocalculate eta/s from first principles in SU(3) for the first time for arbitrary temperatures.Further, a mapping of the SU(3) results for eta/s to QCD is proposed." @default.
- W2736704994 created "2017-07-31" @default.
- W2736704994 creator A5063004647 @default.
- W2736704994 date "2014-01-01" @default.
- W2736704994 modified "2023-10-17" @default.
- W2736704994 title "Spectral functions in finite temperature SU(3) gauge theory and applications to transport phenomena" @default.
- W2736704994 doi "https://doi.org/10.11588/heidok.00017875" @default.
- W2736704994 hasPublicationYear "2014" @default.
- W2736704994 type Work @default.
- W2736704994 sameAs 2736704994 @default.
- W2736704994 citedByCount "0" @default.
- W2736704994 crossrefType "dissertation" @default.
- W2736704994 hasAuthorship W2736704994A5063004647 @default.
- W2736704994 hasConcept C104416048 @default.
- W2736704994 hasConcept C121332964 @default.
- W2736704994 hasConcept C134306372 @default.
- W2736704994 hasConcept C3079626 @default.
- W2736704994 hasConcept C33923547 @default.
- W2736704994 hasConcept C37914503 @default.
- W2736704994 hasConceptScore W2736704994C104416048 @default.
- W2736704994 hasConceptScore W2736704994C121332964 @default.
- W2736704994 hasConceptScore W2736704994C134306372 @default.
- W2736704994 hasConceptScore W2736704994C3079626 @default.
- W2736704994 hasConceptScore W2736704994C33923547 @default.
- W2736704994 hasConceptScore W2736704994C37914503 @default.
- W2736704994 hasLocation W27367049941 @default.
- W2736704994 hasOpenAccess W2736704994 @default.
- W2736704994 hasPrimaryLocation W27367049941 @default.
- W2736704994 hasRelatedWork W1506335735 @default.
- W2736704994 hasRelatedWork W1645482801 @default.
- W2736704994 hasRelatedWork W1983010704 @default.
- W2736704994 hasRelatedWork W2000244218 @default.
- W2736704994 hasRelatedWork W2013455744 @default.
- W2736704994 hasRelatedWork W2038802909 @default.
- W2736704994 hasRelatedWork W2039835625 @default.
- W2736704994 hasRelatedWork W2047476371 @default.
- W2736704994 hasRelatedWork W2064898493 @default.
- W2736704994 hasRelatedWork W209130282 @default.
- W2736704994 hasRelatedWork W2783705899 @default.
- W2736704994 hasRelatedWork W2886069338 @default.
- W2736704994 hasRelatedWork W2964239197 @default.
- W2736704994 hasRelatedWork W3098384001 @default.
- W2736704994 hasRelatedWork W3101411722 @default.
- W2736704994 hasRelatedWork W3103302138 @default.
- W2736704994 hasRelatedWork W3158590736 @default.
- W2736704994 hasRelatedWork W3167234302 @default.
- W2736704994 hasRelatedWork W330070702 @default.
- W2736704994 hasRelatedWork W9886881 @default.
- W2736704994 isParatext "false" @default.
- W2736704994 isRetracted "false" @default.
- W2736704994 magId "2736704994" @default.
- W2736704994 workType "dissertation" @default.