Electric-field induced helium-helium resonances

Abstract

The tunability of the helium-helium interaction through an external electric field is investigated. For a static external field, electric-field induced resonances and associated electric-field induced bound states are calculated for the ${}^4$He-${}^4$He, ${}^3$He-${}^4$He, and ${}^3$He-${}^3$He systems. Qualitative agreement is found with the literature for the ${}^3$He-${}^4$He and ${}^3$He-${}^3$He systems [E. Nielsen, D. V. Fedorov, and A. S. Jensen, Phys. Rev. Lett. {\bf{82}}, 2844 (1999)]. The implications of the predicted electric-field induced resonances for ${}^4$He-${}^4$He on the wave packet dynamics, initiated by intense laser pulses, are investigated. Our results are expected to guide next generation experiments.

10 pages and 6 figures

References in corpus (2)

• Pseudo-potential treatment of two aligned dipoles under external harmonic confinement
• Low-energy resonances and bound states of aligned bosonic and fermionic dipoles