A generalized Nambu - Jona-Lasinio model.
Item
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Title
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A generalized Nambu - Jona-Lasinio model.
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Identifier
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AAI3187427
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identifier
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3187427
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Creator
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Li, Hu.
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Contributor
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Adviser: Carl M. Shakin
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Date
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2005
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Language
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English
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Publisher
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City University of New York.
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Subject
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Physics, Nuclear
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Abstract
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We make use of the Nambu-Jona-Lasinio (NJL) formalism and real-time finite-temperature field theory to calculate spectral functions, as well as Euclidean-time hadronic current correlation functions in the deconfined phase of quantum chromodynamics (QCD), and have made a comparison to the lattice results for the correlators. Some resonant features are seen in our calculations. The spectral functions obtained when using the maximum-entropy-method (MEM) and the lattice data differ from the spectral functions that we calculate in our chiral model. However, our results for the Euclidean-time correlators are in general agreement with the lattice results, with better agreement when our temperature-dependent coupling parameters are used than when temperature-independent parameters are used for the NJL model.;We extend our calculations to study the excitations of dense quark matter at zero temperature and explore some consequences of the use of density-dependent coupling parameters for the Nambu-Jona-Lasinio model.;We also use our model to study the optical potential of a quark in the quark-gluon plasma and calculate the quark mean-free-path. Our results represent a specific example of the dynamics of the plasma as described by the Stony Brook group.
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Type
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dissertation
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Source
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PQT Legacy CUNY.xlsx
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degree
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Ph.D.
