FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1955873676> ?p ?o ?g. }

• W1955873676 abstract "The chiral quark-meson model, being an effective low-energy realization for spontaneous chiral symmetry breaking of QCD at intermediate momentum scales, is often used to study various properties of strongly interacting matter. In this thesis we employ this model to investigate the critical behavior of hot and dense matter with two degenerate light flavors. Using the method of the functional renormalization group, we derive the flow equation for the scale dependent thermodynamic potential at finite temperature and chemical potential in the presence of an explicit symmetry breaking term. We explore the scaling behavior of various observables and confront our results with the Widom-Griffiths form of the equation of state. The focus of our study are especially the scaling properties of the order parameter and its transverse and longitudinal susceptibilities for small, but finite values of the external field when approaching the critical point from the symmetric as well as from the broken phase. We also explore the thermodynamics and the phase structure of strongly interacting hot and dense matter. Apart from the renormalization group formalism, here we also employ the mean field approximation in order to investigate thermodynamic observables sensitive to the phase transition. As an effective model, we use the Polyakov loop extended two flavor chiral quark-meson model in order to connect the chiral and confining properties of QCD. The gluon dynamics is included by coupling quarks with the Polyakov loop and by introducing an effective Polyakov loop potential. We discuss the properties of the net quark number fluctuations in the vicinity of the QCD chiral phase transition. Our main focus of exploration is the ratio of the fourth- to second- order cumulants (kurtosis) and the compressibility. The sensitivity of both observables to the values of the pion mass near the chiral phase transition is also discussed. Within the renormalization group approach, the thermodynamics and the phase structure of the Polyakov loop extended quark-meson model is the main focus of our study. We propose an extended truncation of the effective average action with quarks coupled to background gluonic fields and derive the corresponding flow equation for the scale dependent thermodynamic potential. A full RG treatment of all fields is very complex and thus while solving the flow equation for the quark and meson fields we use the mean field results obtained previously for the Polyakov loop and its conjugate. Thus, within this scheme we determine the phase structure of the model and employ the Taylor expansion coefficients of the thermodynamic pressure in order to locate the position of the critical end point in the phase diagram. Due to the inclusion of fluctuations, we observe a change of the phase diagram compared to that obtained in the mean field approximation. In the end we also briefly discuss the cutoff effect present in the renormalization group method." @default.
• W1955873676 created "2016-06-24" @default.
• W1955873676 creator A5043744706 @default.
• W1955873676 date "2009-01-19" @default.
• W1955873676 modified "2023-09-27" @default.
• W1955873676 title "Renormalization group approach to hot and dense matter" @default.
• W1955873676 hasPublicationYear "2009" @default.
• W1955873676 type Work @default.
• W1955873676 sameAs 1955873676 @default.
• W1955873676 citedByCount "1" @default.
• W1955873676 countsByYear W19558736762013 @default.
• W1955873676 crossrefType "dissertation" @default.
• W1955873676 hasAuthorship W1955873676A5043744706 @default.
• W1955873676 hasConcept C109214941 @default.
• W1955873676 hasConcept C117137515 @default.
• W1955873676 hasConcept C121332964 @default.
• W1955873676 hasConcept C149288129 @default.
• W1955873676 hasConcept C163387558 @default.
• W1955873676 hasConcept C166124518 @default.
• W1955873676 hasConcept C194807282 @default.
• W1955873676 hasConcept C204795200 @default.
• W1955873676 hasConcept C207740291 @default.
• W1955873676 hasConcept C28594881 @default.
• W1955873676 hasConcept C32848918 @default.
• W1955873676 hasConcept C37914503 @default.
• W1955873676 hasConcept C52703039 @default.
• W1955873676 hasConcept C62520636 @default.
• W1955873676 hasConcept C68532491 @default.
• W1955873676 hasConcept C70813659 @default.
• W1955873676 hasConcept C7602139 @default.
• W1955873676 hasConceptScore W1955873676C109214941 @default.
• W1955873676 hasConceptScore W1955873676C117137515 @default.
• W1955873676 hasConceptScore W1955873676C121332964 @default.
• W1955873676 hasConceptScore W1955873676C149288129 @default.
• W1955873676 hasConceptScore W1955873676C163387558 @default.
• W1955873676 hasConceptScore W1955873676C166124518 @default.
• W1955873676 hasConceptScore W1955873676C194807282 @default.
• W1955873676 hasConceptScore W1955873676C204795200 @default.
• W1955873676 hasConceptScore W1955873676C207740291 @default.
• W1955873676 hasConceptScore W1955873676C28594881 @default.
• W1955873676 hasConceptScore W1955873676C32848918 @default.
• W1955873676 hasConceptScore W1955873676C37914503 @default.
• W1955873676 hasConceptScore W1955873676C52703039 @default.
• W1955873676 hasConceptScore W1955873676C62520636 @default.
• W1955873676 hasConceptScore W1955873676C68532491 @default.
• W1955873676 hasConceptScore W1955873676C70813659 @default.
• W1955873676 hasConceptScore W1955873676C7602139 @default.
• W1955873676 hasLocation W19558736761 @default.
• W1955873676 hasOpenAccess W1955873676 @default.
• W1955873676 hasPrimaryLocation W19558736761 @default.
• W1955873676 hasRelatedWork W1573271952 @default.
• W1955873676 hasRelatedWork W1652762612 @default.
• W1955873676 hasRelatedWork W2011685017 @default.
• W1955873676 hasRelatedWork W2012533415 @default.
• W1955873676 hasRelatedWork W2014463229 @default.
• W1955873676 hasRelatedWork W2057539120 @default.
• W1955873676 hasRelatedWork W2090410798 @default.
• W1955873676 hasRelatedWork W2138306970 @default.
• W1955873676 hasRelatedWork W2156329881 @default.
• W1955873676 hasRelatedWork W2157791942 @default.
• W1955873676 hasRelatedWork W2259856916 @default.
• W1955873676 hasRelatedWork W2278090427 @default.
• W1955873676 hasRelatedWork W2530214908 @default.
• W1955873676 hasRelatedWork W2610300215 @default.
• W1955873676 hasRelatedWork W2951980683 @default.
• W1955873676 hasRelatedWork W3100692253 @default.
• W1955873676 hasRelatedWork W3100993872 @default.
• W1955873676 hasRelatedWork W370099883 @default.
• W1955873676 hasRelatedWork W43453449 @default.
• W1955873676 hasRelatedWork W2606130691 @default.
• W1955873676 isParatext "false" @default.
• W1955873676 isRetracted "false" @default.
• W1955873676 magId "1955873676" @default.
• W1955873676 workType "dissertation" @default.