Use this URL to cite or link to this record in EThOS: | https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.532025 |
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Title: | A random matrix model for two-colour QCD at non-zero quark density | ||||||
Author: | Phillips, Michael James |
ISNI:
0000 0004 2701 6352
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Awarding Body: | Brunel University | ||||||
Current Institution: | Brunel University | ||||||
Date of Award: | 2011 | ||||||
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Abstract: | |||||||
We solve a random matrix ensemble called the chiral Ginibre orthogonal ensemble, or chGinOE. This non-Hermitian ensemble has applications to modelling particular low-energy limits of two-colour quantum chromo-dynamics (QCD). In particular, the matrices model the Dirac operator for quarks in the presence of a gluon gauge field of fixed topology, with an arbitrary number of flavours of virtual quarks and a non-zero quark chemical potential. We derive the joint probability density function (JPDF) of eigenvalues for this ensemble for finite matrix size N, which we then write in a factorised form. We then present two different methods for determining the correlation functions, resulting in compact expressions involving Pfaffians containing the associated kernel. We determine the microscopic large-N limits at strong and weak non-Hermiticity (required for physical applications) for both the real and complex eigenvalue densities. Various other properties of the ensemble are also investigated, including the skew-orthogonal polynomials and the fraction of eigenvalues that are real. A number of the techniques that we develop have more general applicability within random matrix theory, some of which we also explore in this thesis.
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Supervisor: | Akemann, G. ; Savin, D. V. | Sponsor: | Engineering and Physical Sciences Research Council (EPSRC) | ||||
Qualification Name: | Thesis (Ph.D.) | Qualification Level: | Doctoral | ||||
EThOS ID: | uk.bl.ethos.532025 | DOI: | Not available | ||||
Keywords: | Chiral Ginibre orthogonal ensemble (chGinOE) ; Non-Hermitian ensemble ; Dirac operator ; Gluon gauge field ; Joint probability density function (JPDF) | ||||||
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