Coupling by the resonant dipole-dipole energy transfer between cold cesium Rydberg atoms is investigated using time-resolved narrow-band deexcitation spectroscopy. This technique combines the advantage of efficient Rydberg excitation with high-resolution spectroscopy at variable interaction times. Dipole-dipole interaction is observed spectroscopically as avoided level crossing. The coherent ch...

Collective decays of multiply-excited atoms become subradiant and bound in space when they are strongly coupled to the guided modes an atom-waveguide interface. In this interface, we analyze their average density-density modified third-order correlations via Kubo cumulant expansions, which can arise sustain for long time. The shape-preserving dimers trimers atomic excitations emerge most coupli...

– We theoretically investigate the mechanical effect of the light-induced dipole-dipole interaction potential on the atoms in a Bose-Einstein condensate. We present numerical calculations on the magnitude and shape of the induced potentials for different experimentally accessible geometries. It is shown that the mechanical effect can be distinguished from the effect of incoherent scattering for...

016101-1 Many chemically active, hazardous, and toxic substances have a high dipole moment, and they interact strongly with the charged particles and molecular ion clusters. A new nucleation model considering the contribution of the dipole-charge interaction to the ion-induced nucleation rates is developed, with the dipole moment of the condensing monomers as a new parameter. It is shown that i...

Using an ab initio approach involving a non-empirical pseudopotentials for Na and Rb atoms, the adiabatic potential energy curves of 26 electronic states of NaRb ionic molecule dissociating up to Na(4p) + Rb and Na + Rb(7s) have been investigated. Their molecular spectroscopic constants have been derived and compared with the available theoretical works. Furthermore, the transition dipole momen...

2 I. INTRODUCTION II. PHOTOSYSTEM 0: THE MECHANISM 1. Fluctuating Light 2. Formation of Metastable Dipoles (a) Light-induced RC Dipoles and their Metastability (b) Distance Traversed within the RC by the Excited or Separated Electron (c) Number of Separated Electrons per RC (d) Contrast 3. The Photosynthetic Dipole Potential (a) The Dipole Potential (b) Surface Area per RC (c) Relative Dielectr...

magnesium oxide nanoclusters have attracted much attention due to their potential applications to catalysis and novel optoelectronic materials. in the present study, we have studied the electronic and magnetic properties of the stoichiometric magnesium oxide nanoclusters (mgo)n  for n = 2-20. although the binding energy increases with the size of the cluster, it  reaches the asymptotic limit of...

Recently, we have proposed a dislocation dipole accumulation model to explain the irradiation-induced amorphization of graphite. However, the structure of dislocation dipole in the hexagonal networks is still an open question at the atomic-level. In this paper, we propose a possible formation process of the dislocation dipole. © 2001 Elsevier Science. All rights reserved