Irreducible tensor form of three-particle operator for open-shell atoms

Rotation operator formalism for open-shell omplexes

Explicit Form of the Evolution Operator of Tavis–Cummings Model : Three and Four Atoms Cases

In this letter the explicit form of evolution operator of the Tavis–Cummings model with three and four atoms is given. This is an important progress in quantum optics or mathematical physics. The purpose of this paper is to give an explicit form to the evolution operator of Tavis–Cummings model ([1]) with some atoms. This model is a very important one in Quantum Optics and has been studied wide...

Explicit Form of Evolution Operator of Three Atoms Tavis–Cummings Model

In this letter the explicit form of evolution operator of three atoms Tavis– Cummings model is given, which is a generalization of the paper quant-ph/0403008. The purpose of this letter is to give an explicit form to the evolution operator of Tavis– Cummings model ([1]) with some atoms. This model is a very important one in Quantum Optics and has been studied widely, see [2] as general textbook...

Energy-shell contributions of the three-particle-three-hole excitations.

The response functions for the extended second and third random phase approximation are compared. A second order perturbation calculation shows that the first-order amplitude for the direct 3p3h excitation from the ground state cancels with those that are engendered by the 1p1h-3p3h coupling. As a consequence nonvanishing 3p3h effects to the 1p1h response involve off energy shell renormalizatio...

Complete nuclear motion Hamiltonian in the irreducible normal mode tensor operator formalism for the methane molecule.

A rovibrational model based on the normal-mode complete nuclear Hamiltonian is applied to methane using our recent potential energy surface [A. V. Nikitin, M. Rey, and Vl. G. Tyuterev, Chem. Phys. Lett. 501, 179 (2011)]. The kinetic energy operator and the potential energy function are expanded in power series to which a new truncation-reduction technique is applied. The vibration-rotation Hami...