Potential energy surfaces of the A1 and B1 states for XH2 molecules ~X5C, Si, Ge, Sn, Pb! are investigated with ab initio full valence multiconfigurational self-consistent field wave functions, using effective core potentials. Spin–orbit coupling is also calculated to construct relativistic potential energy surfaces. The relativistic potential energy surfaces are compared with the adiabatic non...

We present a detailed theoretical study on the photoionization from the bound excited 1P state of He to continua dominated by multiple doubly excited resonance series embedded in multiple single-ionization channels between the N = 2 and N = 3 thresholds. In addition to identifying the individual resonance series, our investigation has also demonstrated unambiguously the level crossing between o...

We present a detailed theoretical study on the photoionization from the bound excited  state of  to continua dominated by multiple doubly excited resonance series embedded in multiple single-ionization channels between the  = 2 and  = 3 thresholds. In addition to identifying the individual resonance series, our investigation has also demonstrated unambiguously the level crossing between ov...

We study intrinsic spin Hall effect in p-type GaAs quantum well structure described by Luttinger Hamiltonian and a Rashba spin-orbit coupling arising from the structural inversion symmetry breaking. The Rashba term induces an energy level crossing in the lowest heavy hole subband, which gives rise to a resonant spin Hall conductance. The resonance may be used to identify the intrinsic spin Hall...

The results on cosmic rays detected by the gravitational antenna NAUTILUS have motivated an experiment (RAP) based on a suspended cylindrical bar, which is made of the same aluminum alloy as NAUTILUS and is exposed to a high energy electron beam. Mechanical vibrations originate from the local thermal expansion caused by warming up due to the energy lost by particles crossing the material. The a...

Kato [1] (see also Rellich [2]) introduced exceptional points for singularities appearing in the perturbation theory of linear operators. Afterwards exceptional points and energy level crossing have been studied for hermitian Hamilton operators [3, 4, 5, 6, 7, 8, 9, 10] and non-hermitian Hamilton operators [11, 12, 13, 14, 15, 16] by many authors. Here we consider the finite dimensional Hilbert...

In this paper, we present a content-based classification approach for audio indexing. The classification is based on low level audio features such as temporal sound, energy, fundamental frequency, zero crossing rate, auto correlation curve, and based on transformations such as Short Time Fourier Transform (STFT). The audio classification in classes such as music, noise, silence, and speech is a...

We review the results on neutrino propagation in neutral and charged media under strong magnetic fields M W ≫ B ≫ m 2 e. It is shown that the neutrino energy density gets a magnetic contribution in both charged and neutral media, which is linear in the magnetic field, of first order in GF , and independent of the charge density. This new term enters as a correction to the neutrino kinetic energ...