D. O'Dell et al., Bose-Einstein condensates with 1/r interatomic attraction: Electromagnetically induced "gravity", PHYS REV L, 84(25), 2000, pp. 5687-5690
We show that particular configurations of intense off-resonant laser beams
can give rise to an attractive 1/r interatomic potential between atoms loca
ted well within the laser wavelength. Such a "gravitational-like" interacti
on is shown to give stable Bose-Einstein condensates that are self-bound (w
ithout an additional trap) with unique scaling properties and measurably di
stinct signatures.