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Título

Real-time propagations for correlated systems in Fock space

Autor Flick, Johannes; Appel, H.; Rubio, Angel
Fecha de publicación 2013
Citación CECAM Workshop (2013)
ResumenIn this poster presentation we summarize work on two different recent projects: (I) The role of non-linear second-order coupling Hamiltonians in photoemission spectroscopy. In our work we employ an exact Fock space representation to study Holstein-Su-Schrieffer-Hamiltonian systems. In particular, we include non-linear electron-phonon couplings, which originate from an expansion to second order in the nuclear displacement. We perform exact diagonalizations and real-time propagations for the model in Fock space and investigate the effect of the nonlinear couplings on ground-state photoemission and time-resolved photoemission spectroscopy. (II) Spontaneous emission in cavity QED In this work we study the behaviour of correlated photon-electron wavefunctions. Our model system consists of an atom placed in an optical cavity. Atom and quantized electromagnetic modes are coupled in the dipole coupling regime. Our model includes one-photon states and two-photon states, which enables us to follow the spontanous emission process, atomic revivals and strong coupling phenomena.
Descripción Trabajo presentado al CECAM Workshop on "Density Functional Theory: learning from the past, looking to the future" celebrado en Berlín (Alemania) del 2 al 5 de Julio de 2013.
Versión del editorhttp://www.cecam.org/workshop-882.html
URI http://hdl.handle.net/10261/103321
Aparece en las colecciones: (CFM) Comunicaciones congresos
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