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Nonperturbative solutions to the Hubbard Model

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@ Atlanta University Center Robert W. Woodruff Library

Thomas, Lori Ann

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ThesisM.S.PhysicsNonperturbative solutions to the Hubbard model are found by using the functional derivative method. A system of closed equations is obtained for the Green's functions of the Hubbard model. Exact expressions for the self-energy are derived which involve only first order functional derivatives. A scheme is proposed for systematically calculating self-energy corrections. We apply the solution to finite rings of two and four lattice sites and compare to the results of numerical calculations on these systems.Electronic theses & dissertations collection for Atlanta University & Clark Atlanta University
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Text
Created Date:
1987 07 01
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Atlanta University Center Robert W. Woodruff Library

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Digital Library of Georgia