Expressions for the "cold" and thermal parts of the Casimir-Polder force for an atom interacting with the surface of a plate possessing an arbitrary temperature T has been analyzed within the framework of a fluctuational-electromagnetic interaction theory that was previously developed for the "small...
The forces come out in terms of the dielectric constant of the solid and the electric polarizability of the atom at imaginary frequencies. The method of images breaks down at distances greater than about 500 脙楼, and an exact treatment of the electromagnetic field fluctuations near the surface ...
Nuclear forces, on the other hand, operate at the level of subatomic particles, binding protons and neutrons together in the nucleus of an atom. The study of forces has been instrumental in advancing our understanding of the universe. By unraveling the nature of these fundamental interactions, ...
Study of the transfer of momentum to atoms by radiation offers a new research approach to one of the oldest and most fundamental problems in physics — the interaction of radiation and matter. In the...doi:10.1007/978-1-4613-0847-8_170Pritchard, David E....
Because the electrons of an atom or molecule are in constant motion (or, alternatively, the electron’s location is subject to quantum-mechanical variability), at any moment in time, an atom or molecule can develop a temporary, instantaneous dipole if its electrons are distributed asymmetrically....
A nearby atom interacts with these charges, thereby producing a field that propagates back to the original atom. Finally in the 1930s this approach was fully analyzed by German-American physicist Fritz London. Additionally, London proposed that dispersion forces are additive, so that the total fo...
The forces of attraction which hold an individual molecule together (for example the covalent bonds) are known as intramolecular attractions. 2007-10-12 21:53:42 补充: The electrons in the atom is not evenly distributed. At a time the electrons of the atom will be gathered at one side of...
We calculate the limits of atomic resolution of an atomic force microscope (AFM) tip probing the elastic surface of graphite. Interaction energies between a "sharp" Pd tip with one apex atom and graphite are obtained from ab initio total... W Zhong,G Overney,D Tománek - 《Epl》 被引量...
An atom in ultrahigh vacuum with a local miniature source mass minimizes screening and is well-suited as a test mass for such theories8. Prime examples of such scalar fields are chameleons and symmetrons. A chameleon scalar field23,24 is characterized by an effective potential density Veff(ϕ...
Radiative properties of atoms near a conducting plane: An old problem in a new light We examine the level shifts and radiation rates of an atom near an infinite, perfectly conducting plane. Following the work of Dalibard, Dupont-Roc, and Co... D Meschede,W Jhe,EA Hinds - 《Physical Rev...