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Enrico Celeghini

Publications and source records attributed to Enrico Celeghini.

20 records · Page 2Linked to original sources

Italian workshop on quantum groups

The first ``Convegno Informale su Quantum Groups'' was held in Florence from February 3 to 6, 1993. This Convegno was conceived as an informal meeting to bring together all the italian people working in the field of quantum groups and related topics. We are very happy indeed that about 30 theoretical physicists decided to take part presenting many aspects of this interesting and live subject of research. We thank all the participants for the stimulating and nice atmosphere that has characterized the meeting. This paper has the intent to give a quick review in english of the contributions and related references. We think useful to include the complete addresses and coordinate data of the participants. It is our intention to diffuse these proceedings by e-mail trough electronic data banks.

hep-th↗

Quantum algebras and Lie groups

Lie groups and quantum algebras are connected through their common universal enveloping algebra. The adjoint action of Lie group on its algebra is naturally extended to related q-algebra and q-coalgebra. In such a way, quantum structure can be dealt more or less as the Lie one and we do not need to introduce the not easy to handle topological groups. Composed system also is described by the suitably symmetrized q-coalgebra. A physical application to the phonon, irreducible unitary representation of E_q(1,1), shows both the transformation under the group action of one phonon state and the fusion of two phonons, by means of the coproduct, in only one phonon lying on a branch of the appropriate dispersion relation.

hep-th↗