Дисертації з теми "Finite temperature QCD"
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Cossu, Guido. "Deconfinement transition in QCD at finite temperature." Doctoral thesis, Scuola Normale Superiore, 2009. http://hdl.handle.net/11384/85831.
Повний текст джерелаZhang, Yingwen. "Applications of QCD sum rules at finite temperature." Doctoral thesis, University of Cape Town, 2013. http://hdl.handle.net/11427/30179.
Повний текст джерелаHatta, Yoshitaka. "The QCD phase transition at finite temperature and density." 京都大学 (Kyoto University), 2004. http://hdl.handle.net/2433/147809.
Повний текст джерелаAouane, Rafik. "Gluon and ghost propagator studies in lattice QCD at finite temperature." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2013. http://dx.doi.org/10.18452/16735.
Повний текст джерелаGluon and ghost propagators in quantum chromodynamics (QCD) computed in the infrared momentum region play an important role to understand quark and gluon confinement. They are the subject of intensive research thanks to non-perturbative methods based on Dyson-Schwinger (DS) and functional renormalization group (FRG) equations. Moreover, their temperature behavior might also help to explore the chiral and deconfinement phase transition or crossover within QCD at non-zero temperature. Our prime tool is the lattice discretized QCD (LQCD) providing a unique ab-initio non-perturbative approach to deal with the computation of various observables of the hadronic world. We investigate the temperature dependence of Landau gauge gluon and ghost propagators in pure gluodynamics and in full QCD. Regarding the gluon propagator, we compute its longitudinal DL as well its transversal DT components. The aim is to provide a data set in terms of fitting formulae which can be used as input for DS (or FRG) equations. We deal with full (Nf=2) LQCD with the twisted mass fermion discretization. We employ gauge field configurations provided by the tmfT collaboration for temperatures in the crossover region and for three fixed pion mass values in the range [300,500] MeV. Finally, within SU(3) pure gauge theory (at T=0) we compute the Landau gauge gluon propagator according to different gauge fixing criteria. Our goal is to understand the influence of gauge copies with minimal (non-trivial) eigenvalues of the Faddeev-Popov operator.
Fetea, Mirela Simona. "Pions and vector mesons at finite temperature from QCD sum rules." Doctoral thesis, University of Cape Town, 1998. http://hdl.handle.net/11427/9694.
Повний текст джерелаThe temperature corrections to the current algebra Gell-Mann, Oakes and Renner(GMOR) relation in SU(2) X SU(2), the temperature behaviour of the pion mass and the q2 and T dependence of the ρππ vertex function in the space-like region are investigated.
Vuorinen, Aleksi. "The pressure of QCD at finite temperature and quark number density." Helsinki : University of Helsinki, 2003. http://ethesis.helsinki.fi/julkaisut/mat/fysik/vk/vuorinen/.
Повний текст джерелаBurger, Florian. "The finite temperature QCD phase transition and the thermodynamic equation of state." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2013. http://dx.doi.org/10.18452/16679.
Повний текст джерелаIn this thesis we report about an investigation of the finite temperature crossover/phase transition of quantum chromodynamics and the evaluation of the thermodynamic equation of state. To this end the lattice method and the Wilson twisted mass discretisation of the quark action are used. This formulation is known to have an automatic improvement of lattice artifacts and thus an improved continuum limit behaviour. This work presents first robust results using this action for the non-vanishing temperature case. We investigate the chiral limit of the two flavour phase transition with several small values of the pion mass in order to address the open question of the order of the transition in the limit of vanishing quark mass. For the currently simulated pion masses in the range of 300 to 700 MeV we present evidence that the finite temperature transition is a crossover transition rather than a genuine phase transition. The chiral limit is investigated by comparing the scaling of the observed crossover temperature with the mass including several possible scenarios. Complementary to this approach the chiral condensate as the order parameter for the spontaneous breaking of chiral symmetry is analysed in comparison with the O(4) universal scaling function which characterises a second order transition. With respect to thermodynamics the equation of state is obtained from the trace anomaly employing the temperature integral method which provides the pressure and energy density in the crossover region. The continuum limit of the trace anomaly is studied by considering several values of Nt and the tree-level correction technique.
Robaina, Fernandez Daniel [Verfasser]. "Static and dynamic properties of QCD at finite temperature / Daniel Robaina Fernandez." Mainz : Universitätsbibliothek Mainz, 2016. http://d-nb.info/1106573382/34.
Повний текст джерелаOevers, Manfred [Verfasser]. "The finite temperature phase diagram of 2-flavour QCD with improved Wilson fermions / Manfred Oevers." Bielefeld : Universitätsbibliothek Bielefeld, 1999. http://d-nb.info/1034401254/34.
Повний текст джерелаHeide, Johannes van der. "The pion form factor from lattice QCD a non-perturbative study at zero and finite temperature /." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2004. http://dare.uva.nl/document/76697.
Повний текст джерелаPinke, Christopher [Verfasser], Owe Akademischer Betreuer] Philipsen, Hartmut [Akademischer Betreuer] [Wittig, and Luciano [Akademischer Betreuer] Rezzolla. "Lattice QCD at finite temperature with Wilson fermions / Christopher Pinke. Gutachter: Owe Philipsen ; Hartmut Wittig ; Luciano Rezzolla. Betreuer: Owe Philipsen." Frankfurt am Main : Univ.-Bibliothek Frankfurt am Main, 2014. http://d-nb.info/1058626027/34.
Повний текст джерелаGhiglieri, Jacopo [Verfasser], Nora [Akademischer Betreuer] Brambilla, and Wolfram [Akademischer Betreuer] Weise. "Effective Field Theories of QCD for Heavy Quarkonia at Finite Temperature / Jacopo Ghiglieri. Gutachter: Nora Brambilla ; Wolfram Weise. Betreuer: Nora Brambilla." München : Universitätsbibliothek der TU München, 2011. http://d-nb.info/101486139X/34.
Повний текст джерелаAouane, Rafik [Verfasser], Michael [Akademischer Betreuer] Müller-Preußker, Christian [Akademischer Betreuer] Fischer, and Ernst-Michael [Akademischer Betreuer] Ilgenfritz. "Gluon and ghost propagator studies in lattice QCD at finite temperature / Rafik Aouane. Gutachter: Michael Müller-Preußker ; Christian Fischer ; Ernst-Michael Ilgenfritz." Berlin : Humboldt Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2013. http://d-nb.info/1034865595/34.
Повний текст джерелаNiblaeus, Carl. "In-medium width of the η' meson". Thesis, Uppsala universitet, Kärnfysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-210687.
Повний текст джерелаGlesaaen, Jonas Rylund [Verfasser], Owe [Akademischer Betreuer] [Gutachter] Philipsen, and Dirk-Hermann [Gutachter] Rischke. "Heavy quark QCD at finite temperature and density using an effective theory / Jonas Rylund Glesaaen ; Gutachter: Owe Philipsen, Dirk-Hermann Rischke ; Betreuer: Owe Philipsen." Frankfurt am Main : Universitätsbibliothek Johann Christian Senckenberg, 2017. http://d-nb.info/1129254267/34.
Повний текст джерелаBurger, Florian [Verfasser], Michael [Akademischer Betreuer] Müller-Preußker, Maria-Paola [Akademischer Betreuer] Lombardo, and Edwin [Akademischer Betreuer] Laermann. "The finite temperature QCD phase transition and the thermodynamic equation of state : an investigation employing lattice QCD with N f = 2 twisted mass quarks / Florian Burger. Gutachter: Michael Müller-Preußker ; Maria-Paola Lombardo ; Edwin Laermann." Berlin : Humboldt Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2013. http://d-nb.info/1031956018/34.
Повний текст джерелаBerwein, Matthias Wilhelm Georg [Verfasser], Nora [Akademischer Betreuer] [Gutachter] Brambilla, Eric [Gutachter] Braaten, and Norbert [Gutachter] Kaiser. "Heavy Quark-Antiquark Pairs at Zero and Finite Temperature with Effective Field Theories of QCD / Matthias Wilhelm Georg Berwein ; Gutachter: Nora Brambilla, Eric Braaten, Norbert Kaiser ; Betreuer: Nora Brambilla." München : Universitätsbibliothek der TU München, 2016. http://d-nb.info/1119319161/34.
Повний текст джерелаFrigori, Rafael Bertolini. "Estudo numérico da transição de fase na QCD a temperatura finita." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-12112007-090407/.
Повний текст джерелаIn our numerical simulations, we have done a careful analysis of Monte-Carlo algorithms usually applied in the thermalization of gauge theories and continuous-spin systems. Among them we present a new proposal that enables a reduction of roughly 25% in the computational time. We apply this new algorithm to a numerical study of the at finite temperature, using lattices with 502 x 4 sites. We also use Finite-Size-Scaling techniques, Short-Time Dynamics and Variational Methods to extract critical exponents and the spectrum of screening masses of the theory.
Pilon, Eric. "Qcd quantitative et photons reels quelques problemes infrarouges en theorie des champs a temperature finie." Paris 11, 1992. http://www.theses.fr/1992PA112162.
Повний текст джерелаAntunes, Sérgio M. [UNESP]. "Estudo de sistemas hadrônicos no limite de acoplamento forte da QCD: simetria quiral a densidades e temperaturas finitas." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/132749.
Повний текст джерелаAntunes, Sérgio M. "Estudo de sistemas hadrônicos no limite de acoplamento forte da QCD: simetria quiral a densidades e temperaturas finitas /." São Paulo, 2009. http://hdl.handle.net/11449/132749.
Повний текст джерелаBanca: Rudnei de Oliveira Ramos
Banca: Heron Carlos de Godói Caldas
Banca: Sérgio Szpigel
Banca: Sandra dos Santos Padula
Resumo: Desenvolvemos um formalismo para estudar a quebra dinâmica da simetria quiral na matéria hadrônica em que os quarks e gluons estão confinados no interior dos hádrons. O formalismo emprega as técnicas tradicionais da teoria quântica de muitos corpos em conjunção com a representação Fock-Tani, em que os estados ligados hadrônicos são descritos em termos de operadores de campos que satisfazem regras de comutação canônicas em um espaço de Fock estendido. Empregamos um modelo de quarks inspirado na Hamiltoniana da QCD no calibre de Coulomb que confina quarks e gluons e realiza a quebra dinâmica da simetria quiral. Resultados numéricos foram obtidos para a equação de gap para os quarks num meio hadrônico formado por nucleons a temperatura zero. Como aplicação do formalismo estimamos os efeitos da densidade bariônica sobre o potencial de interação entre mésons charmosos D com nucleons obtido com a representação Fock-Tani dentro do mesmo modelo de quarks
Abstract: We have developed a formalism to study dynamical chiral symmetry breaking in hadronic matter where quarks and gluons are confined within hadrons. The for- malism employs the traditional techniques of the quantum many body theory in conjunction with the Fock-Tani representation in which the hadronic bound States are described in terms of field operators that satisfy canonical commutation rela- tions in an extended Fock space. We have employed a quark model inspired in the QCD Hamiltonian in Coulomb gauge that confines quarks and gluons and realizes dynamical chiral symmetry breaking. Numerical results are obtained for the gap equation in a hadronic médium formed by nucleons at zero temperature. As an application of the formalism we have estimated the effects of the barionic density on the interaction potential of charmed D mesons with nucleons obtained with the Fock-Tani representation within the the same quark model
Doutor
Costa, Ricardo de Souza. "Estudo do espectro das massas de blingagem de cor em QDC na rede a temperatura finita." Universidade do Estado do Rio de Janeiro, 2008. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=1207.
Повний текст джерелаNeste trabalho estudamos o espectro das massas de blindagem mais baixas em teorias do tipo Yang_Mills na rede.Utilizamos os grupos de calibre SU(2) e SU(3) em 2+1 e 3+1 dimensões. Os cálculos foram realizados perto da temperatura crítica da transição de fase confinamento-desconfinamento. Obtivemos valores para as razôes entre as massas consistentes com os valores previstos a partir de universidade.
In this work we study the spectrum of the lowest screening masses for Yang-Mills theories on the lattice. We used the gauge groups SU(2) and SU(3) in 2 + 1 and 3 + 1 dimensions. Calculations were done near the critical temperature of the confinement-desconfinement phase transition. We obtained values for the ratios of the screening masses consistent with predictions from universality arguments.
Costa, Lúcio Campos [UNESP]. "Estudo da violação das simetrias de Lorentz e CPT na eletrodinâmica quântica." Universidade Estadual Paulista (UNESP), 2004. http://hdl.handle.net/11449/102501.
Повний текст джерелаCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Na presente tese, investiga-se uma versão estendida da eletrodinâmica quântica, onde se introduz um termo de acoplamento axial renormalizável não invariante, dando ênfase à quebra dinâmica das simetrias de Lorentz e CPT no setor de gauge e à ambigüidade no coeficiente do termo do tipo Chern-Simons, induzido através de correções radiativas e outros métodos não perturbativos. Aspectos da teoria efetiva de Euler-Kockel-Heisenberg a tempertura finita também são investigados à luz do formalismo conhecido como Thermo Field Dynamics.
In the present thesis it is investigated an extended version of quantum electrodynamic where a renormalized non-invariant axial coupling term introduced, emphasizing the dynamic violation of the Lorentz and CPT symmetries in the gauge sector of the theory as well as the ambiguity of the coeficient of the Chern-Simon-like term, induced through radiative corrections and other non-perturbative methods. Some aspects of the Euler-Kockel-Heisenber effective theory at finite temperature have also been addressed in the context of the Thermo Field Dynamics formalism.
Müller, Jens Andreas. "A Dyson-Schwinger Approach to Finite Temperature QCD." Phd thesis, 2011. http://tuprints.ulb.tu-darmstadt.de/2395/1/diss_main.pdf.
Повний текст джерелаLiu, Kun-Min, and 劉崑民. "Monte Carlo Simulation of Quenched QCD at Finite Temperature." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/23216749742412852511.
Повний текст джерела國立臺灣大學
物理研究所
99
In this thesis, we study the finite temperature phase transition of the pure SU(3) gauge theory. We use the hybrid Monte Carlo method to simulate the quenched QCD at finite temperature, with Wilson gauge action on the 16^3 × 6 lattice. From the Polyakov loop and its susceptibility, we determine the value of the critical temperature Tc = 274 ± 1 MeV, in agreement with the widely accepted value of Tc ~ 270 MeV for pure SU(3) gauge theory.
Kwon, Youngshin [Verfasser]. "QCD sum rule studies at finite density and temperature / Youngshin Kwon." 2009. http://d-nb.info/1000455432/34.
Повний текст джерелаMüller, Jens Andreas [Verfasser]. "A Dyson-Schwinger approach to finite temperature QCD / von Jens Andreas Müller." 2011. http://d-nb.info/1010056522/34.
Повний текст джерелаThakkar, Rishabh. "Mesonic screening mass at zero and finite chemical potential." Thesis, 2022. https://etd.iisc.ac.in/handle/2005/5980.
Повний текст джерелаDing, Heng-Tong [Verfasser]. "Charmonium correlation and spectral functions in quenched lattice QCD at finite temperature / vorgelegt von Heng-Tong Ding." 2010. http://d-nb.info/1009957759/34.
Повний текст джерела