CENTRO DI RICERCA MATEMATICA ENNIO DE GIORGI

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            AVVISO DI SEMINARIO

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Nell'ambito delle "Lectures in Quantum Information", organizzate presso il Centro De Giorgi, il Prof. Enriques Rico Ortega (Universität Innsbruck) terrà un seminario su: **

"Scale perturbation in valence bond ground states"

ABSTRACT: A simple and efficient method for calculating the ground state for a class of antiferromagnet systems is presented. It combines the valence bond structure of the ground state for this class of systems and real space renormalization group. As an example, the entire Haldane phase for a spin-1 chain is described, form the AKLT model, through the Heisenberg model, ending at the critical WZNW SU(2) level 2 model. The picture that emerges form this new method leads us to consider the relationship between the hidden topological order that characterizes the Haldane phase and potential applications in quantum communication technology.

CALENDARIO:

Mercoled'13 Dicembre, ore 15.00

Sala Conferenze del Collegio Puteano (Piazza dei Cavalieri, 3).

Tutti gli interessati sono invitati a partecipare.

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