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Showing 1 to 1 of 1 for “"Caos quântico"”.
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Transition from integrable to chaotic domain in spectra of spin chains
In this thesis we present an approach, similar to random matrix ensembles, in order to study the integrable-chaotic transition in the Heisenberg spin model. We consider three ways to break the integrability: presence on an external field on a single spin, coupling of an external random field with …