How composite bosons really interact |
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Authors: | Email author" target="_blank">M?CombescotEmail author O?Betbeder-Matibet |
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Institution: | (1) Institut des Nanosciences de Paris, Université Pierre et Marie Curie and Université Denis Diderot, CNRS, Campus Boucicaut, 140 rue de Lourmel, 75015 Paris, France |
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Abstract: | The aim of this paper is to clarify the conceptual difference which
exists between the interactions of composite bosons and the interactions
of elementary bosons. A special focus is made on the physical processes
which are missed when composite bosons are replaced by elementary bosons.
Although what is here said directly applies to excitons, it is also valid
for composite bosons in other fields than semiconductor physics. We, in
particular, explain how the two elementary scatterings – Coulomb and
Pauli – of our many-body theory for composite excitons, can be extended
to a pair of fermions which is not an Hamiltonian eigenstate – as for
example a pair of trapped electrons, of current interest in quantum
information. |
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Keywords: | |
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