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Please use this identifier to cite or link to this item: http://hdl.handle.net/2307/6077

Title: Challenges for first-principles methods in theoretical and computational physics : multiple excitations in many-electrons systems and the Aharonov-Bohm effect in carbon nanotubes
Authors: Sangalli, Davide
Tutor: Onida, Giovanni
Marini, Andrea
Issue Date: 23-Feb-2011
Publisher: Università degli studi Roma Tre
Abstract: The present thesis is divied in two parts. In the first part of the thesis we develop a theoretical method able to describe double excitations in absorption experiments. In particular a coherent approach to the description of double excitations in correlated materials is presented: we derive stringent mathematical conditions on the algebraical structure of the Bethe-Salpeter and TDDFT kernels that avoid the occurrence of spurious and non-physical excitations. We discuss how these conditions need
URI: http://hdl.handle.net/2307/6077
Access Rights: info:eu-repo/semantics/openAccess
Appears in Collections:X_Dipartimento di Fisica 'Edoardo Amaldi'
T - Tesi di dottorato

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