Quantum graphs with two-particle contact interactions
arXiv:1207.5648 · doi:10.1088/1751-8113/46/4/045207
Abstract
We construct models of many-particle quantum graphs with singular two-particle contact interactions, which can be either hardcore- or delta-interactions. Self-adjoint realisations of the two-particle Laplacian including such interactions are obtained via their associated quadratic forms. We prove discreteness of spectra as well as Weyl laws for the asymptotic eigenvalue counts. These constructions are first performed for two distinguishable particles and then for two identicle bosons. Furthermore, we extend the models to N bosons with two-particle interactions, thus implementing the Lieb-Liniger model on a graph.
References in corpus (5)
Cited by in corpus (14)
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- Non-abelian Quantum Statistics on Graphs
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- On the number of isolated eigenvalues of a pair of particles in a quantum wire