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Skip to Search Results- 2Phase transition
- 1Condensed matter physics
- 1Fluctuations
- 1Frustrated Heisenberg model
- 1Functional integral
- 1Monte Carlo
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Fall 2011
Models of interacting quantum spins have contributed significantly to our understanding of magnetism. The Heisenberg model on square lattice, which exhibits semiclassical N´eel order, is one of the canonical models. However, with frustration introduced by competing interactions, the system...
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Fall 2019
In this thesis we investigate how corrections originating from particle-hole interactions may be introduced into the Bardeen-Cooper-Schrieffer (BCS) theory of superconductivity using functional integral methods. The attractive Fermionic contact interaction is simultaneously decoupled in the...