I. Bialynickibirula et Z. Bialynickabirula, NONSPREADING WAVE-PACKETS FOR RYDBERG ELECTRONS IN ROTATING MOLECULESWITH ELECTRIC-DIPOLE MOMENTS, Physical review letters, 77(21), 1996, pp. 4298-4301
Nonspreading wave packets for Rydberg electrons are predicted in rotat
ing molecules with electric dipole moments. We have named them the Tro
jan wave packets since their stability is due to the same mechanism th
at governs the motion of the Trojan asteroids in the Sun-Jupiter syste
m. Unlike all previously predicted Trojan wave packets in atoms, molec
ular Trojan states do not require external fields for their existence.