Alkali Rydberg States in Electromagnetic Fields
... time) was identified with the onset of classically chaotic motion. Both, quantum mechanical calculations [16, 17, 18] and experiments covering a broad range of microwave frequencies and principal quantum numbers of the atomic initial state [19] confirmed these predictions for driving frequencies bel ...
... time) was identified with the onset of classically chaotic motion. Both, quantum mechanical calculations [16, 17, 18] and experiments covering a broad range of microwave frequencies and principal quantum numbers of the atomic initial state [19] confirmed these predictions for driving frequencies bel ...
review on the quantum spin Hall effect by Macijeko, Hughes, and
... protected by the bulk topology. But more concretely, what is the mechanism for this “topological protection”? The answer is the following: The bulk topology is responsible for some kind of fractionalization on the edge. More precisely, the usual degrees of freedom of the electron are spatially separ ...
... protected by the bulk topology. But more concretely, what is the mechanism for this “topological protection”? The answer is the following: The bulk topology is responsible for some kind of fractionalization on the edge. More precisely, the usual degrees of freedom of the electron are spatially separ ...
The crucial role of triplets in photoinduced charge transfer and
... channel remains the main one even when geminate recombination is controlled by the spin conversion. We will prove this statement assuming that spin conversion is incoherent and proceeds with the rate ks from triplet to singlet and with the rate 3ks in the opposite direction.2 If ks td 1, the gemin ...
... channel remains the main one even when geminate recombination is controlled by the spin conversion. We will prove this statement assuming that spin conversion is incoherent and proceeds with the rate ks from triplet to singlet and with the rate 3ks in the opposite direction.2 If ks td 1, the gemin ...
Relativistic effects in atomic and molecular properties
... Until the seventies of the 20th century it was generally accepted that for a description of the electronic structure of atoms and molecules and, therefore, for the whole chemistry and for the substantial part of physics, relativistic theory is not needed. According to Sheldon L. Glashow [1], Nobel P ...
... Until the seventies of the 20th century it was generally accepted that for a description of the electronic structure of atoms and molecules and, therefore, for the whole chemistry and for the substantial part of physics, relativistic theory is not needed. According to Sheldon L. Glashow [1], Nobel P ...
Between classical and quantum
... Section 3, Bohr’s position eludes classification according to these terms; our three stances being of an ontological nature, he probably would have found each of them unattractive.11 Of course, one has to specify what the terminology involved means. By quantum theory we mean standard quantum mechani ...
... Section 3, Bohr’s position eludes classification according to these terms; our three stances being of an ontological nature, he probably would have found each of them unattractive.11 Of course, one has to specify what the terminology involved means. By quantum theory we mean standard quantum mechani ...
Optical Properties of Semiconductor Quantum Dots
... samples and discussing with you in Madrid. Your way of – not – showing your entagled-photons results at that conference was a masterpiece in presentation art. I shared the darkness of the optics lab with many people over the years and I wish to thank them all for their help and for making the atmosp ...
... samples and discussing with you in Madrid. Your way of – not – showing your entagled-photons results at that conference was a masterpiece in presentation art. I shared the darkness of the optics lab with many people over the years and I wish to thank them all for their help and for making the atmosp ...
Semiclassical Green`s functions and an instanton formulation of
... of the rate is found by performing a number of steepestdescent integrations. Other instanton approaches are well known from adiabatic rate23–29 and tunnelling splitting30,31 calculations, where in both cases the Born-Oppenheimer approximation is first applied to obtain a single-surface Hamiltonian. ...
... of the rate is found by performing a number of steepestdescent integrations. Other instanton approaches are well known from adiabatic rate23–29 and tunnelling splitting30,31 calculations, where in both cases the Born-Oppenheimer approximation is first applied to obtain a single-surface Hamiltonian. ...
The Physics of Low-energy Electron-Molecule Collisions
... wavefunction (/Jj('Cm).This wavefunction is an eigenfunction of.Yl' m' The scattered wave terms in (5) are more interesting. There is one such term for each energetically accessible final state of the molecule lPr('Cm). Each term is a product of a final-state molecular wavefunction, an outgoing sphe ...
... wavefunction (/Jj('Cm).This wavefunction is an eigenfunction of.Yl' m' The scattered wave terms in (5) are more interesting. There is one such term for each energetically accessible final state of the molecule lPr('Cm). Each term is a product of a final-state molecular wavefunction, an outgoing sphe ...
Trapping and cooling rubidium atoms for quantum information
... Wineland and coworkers [5] with Mg+ -ions confined in a trap, marked the beginning of a new era. An intuitive picture of laser cooling is the transfer of energy and entropy from the ensemble of atoms or ions being cooled to the radiation field. The simplistic explanatory picture of energy and moment ...
... Wineland and coworkers [5] with Mg+ -ions confined in a trap, marked the beginning of a new era. An intuitive picture of laser cooling is the transfer of energy and entropy from the ensemble of atoms or ions being cooled to the radiation field. The simplistic explanatory picture of energy and moment ...
Electronic and Optical Properties of Quantum Dots: A Tight - E-LIB
... the interpretation of present experiments and to guide and stimulate future developments. A key requirement is the calculation of the electron and hole energy levels and wave functions in an arbitrarily-shaped QD structure. This task is considerably more difficult and computationally more intensive th ...
... the interpretation of present experiments and to guide and stimulate future developments. A key requirement is the calculation of the electron and hole energy levels and wave functions in an arbitrarily-shaped QD structure. This task is considerably more difficult and computationally more intensive th ...
Localized - Current research interest: photon position
... and photon number amplitude is nonlocal in r-space. (2) There are no definite s, l=0 localized photon states (Newton and Wigner 1949) and no photon position operator with localized eigenvectors that transforms like a vector. (3) If a relativistic particle is localized for an instant, at all other ti ...
... and photon number amplitude is nonlocal in r-space. (2) There are no definite s, l=0 localized photon states (Newton and Wigner 1949) and no photon position operator with localized eigenvectors that transforms like a vector. (3) If a relativistic particle is localized for an instant, at all other ti ...
Bohr model
In atomic physics, the Rutherford–Bohr model or Bohr model, introduced by Niels Bohr in 1913, depicts the atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus—similar in structure to the solar system, but with attraction provided by electrostatic forces rather than gravity. After the cubic model (1902), the plum-pudding model (1904), the Saturnian model (1904), and the Rutherford model (1911) came the Rutherford–Bohr model or just Bohr model for short (1913). The improvement to the Rutherford model is mostly a quantum physical interpretation of it. The Bohr model has been superseded, but the quantum theory remains sound.The model's key success lay in explaining the Rydberg formula for the spectral emission lines of atomic hydrogen. While the Rydberg formula had been known experimentally, it did not gain a theoretical underpinning until the Bohr model was introduced. Not only did the Bohr model explain the reason for the structure of the Rydberg formula, it also provided a justification for its empirical results in terms of fundamental physical constants.The Bohr model is a relatively primitive model of the hydrogen atom, compared to the valence shell atom. As a theory, it can be derived as a first-order approximation of the hydrogen atom using the broader and much more accurate quantum mechanics and thus may be considered to be an obsolete scientific theory. However, because of its simplicity, and its correct results for selected systems (see below for application), the Bohr model is still commonly taught to introduce students to quantum mechanics or energy level diagrams before moving on to the more accurate, but more complex, valence shell atom. A related model was originally proposed by Arthur Erich Haas in 1910, but was rejected. The quantum theory of the period between Planck's discovery of the quantum (1900) and the advent of a full-blown quantum mechanics (1925) is often referred to as the old quantum theory.