A toy model for the dipolar-induced resonance in quasi-one-dimensional systems
Authors: Bartolo N., Papoular DJ., Recati A., Menotti C.
Autors Affiliation: Univ Trento, INO CNR BEC Ctr, Povo, Italy; Univ Trento, Dip Fis, Povo, Italy; Univ Montpellier 2, CNRS, L2C, UMR 5221, Montpellier, France
Abstract: We discuss the properties of the effective dipolar interaction for two particles tightly confined along a one-dimensional tube, stressing the emergence of a single dipolar-induced resonance in a regime for which two classical dipoles would just repel each other. We present a toy-model potential reproducing the main features of the effective interaction: a non-zero-range repulsive potential competing with an attractive contact term. The existence of a single resonance is confirmed analytically. The toy model is than generalized to investigate the interplay between dipolar and contact interaction, giving an intuitive interpretation of the resonance mechanism.
Journal/Review: EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
Volume: 224 (3) Pages from: 477 to: 482