Results 241 to 250 of about 1,072,800 (324)

The interplay of antiaromaticity and diradical character in diarenoindacenes and diindenoarenes. [PDF]

Chem Sci
Vidal E, Warren GI, Barker JE, Haley MM.
europepmc   +1 more source

Superconductivity in Hourglass Dirac Chain Metals (Ti, Hf)IrGe. [PDF]

Adv Sci (Weinh)
Meena PK, Samanta D, Jangid S, Kushwaha RK, Stewart R, Hillier AD, Ghosh SK, Singh RP.   +7 more
europepmc   +1 more source

Relativistic Limits on the Discretization and Temporal Resolution of a Quantum Clock. [PDF]

Entropy (Basel)
Favalli T.
europepmc   +1 more source

Development of a highly degenerate primer-based molecular tool for detecting and classifying the four major classes of polyhydroxyalkanoate synthase (phaC) genes in bacteria. [PDF]

Microb Cell Fact
Ibrahim Osman A, Noble B, Percy L, Basnett P.   +3 more
europepmc   +1 more source

Resonant degenerate four-wave mixing spectroscopy of transitions with degenerate energy levels: Saturation and polarization effects

The Journal of Chemical Physics, 1999
The physics of the degenerate four-wave mixing process for resonant transitions between two degenerate energy levels is investigated by direct numerical integration of the time-dependent density matrix equations. The Zeeman structure of the upper and lower energy levels is included in a multistate formulation of the density matrix equations.
Thomas A. Reichardt, Robert P. Lucht
semanticscholar   +3 more sources

Adiabatic Theorem Violation for Degenerate Energy Levels

Physica Scripta, 1999
For the exactly solvable model of a two-mode oscillator with slowly varying frequency of one of the modes it is demonstrated that such a quantum number as the angular momentum of the oscillator is not conserved in the adiabatic limit.
V. I. Man’ko, T. H. Seligman
semanticscholar   +4 more sources

Mean occupation number for noninteracting paraparticles in degenerate energy levels

American Journal of Physics, 1996
The combinatorial solution of finding the number of ways of distributing n particles into g distinguishable groups such that no group contains fewer than q objects or more than q+a objects is used to obtain the mean occupation number of noninteracting paraparticles in degenerate energy levels.
R. Kishore
semanticscholar   +3 more sources

Diagrammatic analysis of adiabatic and time-independent perturbation theory for degenerate energy levels

Chemical Physics Letters, 1978
Time-ordered folded diagrams are used to represent the effective hamiltonian in the adiabatic formalism. Resummation of the diagrams is shown to give a term-by-term correspondence with time-independent perturbation ...
M. A. J. Michels, L.G. Suttorp
semanticscholar   +5 more sources

Kinetic theory of light-induced drift of particles with degenerate energy levels

Journal of Physics A: Mathematical and General, 1986
The theory of light-induced drift of particles with degenerate levels is proposed. Kinetic equations which are semiclassical with respect to rotational degrees of freedom and with a phase memory accounting are obtained. The drift velocity dependence on radiation polarisation is predicted. Numerical calculation, which has been made in a strong collision
Faris Gel’mukhanov, L. V. Il’ichov, A. M. Shälagin   +2 more
semanticscholar   +3 more sources