32 research outputs found
Stark effect in the nonuniform field and its influence on the fine structure of Rydberg blockade
Splitting the energy levels of a hydrogen-like atom by the electric field
nonuniform at the atomic scale is studied. This situation is important for the
multi-level treatment of the phenomenon of Rydberg blockade [Yu.V. Dumin, J.
Phys. B, v.47, p.175502 (2014)]. An explicit formula for the energy levels is
derived. A typical value of the energy shift by the electric field gradient
turns out to be proportional to the 4th power of the principal quantum number
(i.e., the square of atomic size), as would be expected from a qualitative
consideration. Finally, the fine spatial structure of the Rydberg blockade is
analyzed when the electric-field-gradient term plays the dominant role, and the
results are confronted with the experimental data.Comment: LaTeX2e, iopart class, 14 pages, 2 EPS figures, accepted for
publication in J. Phys. B; v2: text substantially extended, 1 figure added;
v3: text substantially extended and subdivided, 1 figure and 7 references
added; v4: misprints in Eq.(4) correcte
Testing the Dark-Energy-Dominated Cosmology by the Solar-System Experiments
According to the recent astronomical data, the most part of energy in the
Universe is in the 'dark' form, which is effectively described by Lambda-term
in Einstein equations. All arguments in favor of the dark energy were obtained
so far from the observational data related to very large (intergalactic)
scales. Is it possible to find a manifestation of the dark energy at much less
scales (e.g. inside the Solar system)?Comment: Report at the Eleventh Marcel Grossmann Meeting on General Relativity
(Freie Universitaet, Berlin, Germany; July 23-29, 2006). Single LaTeX file, 3
pages, auxiliary files required: ws-procs975x65.cls and cite.st