We compute the condensation energy in the spin-fermion model using Scalapino-White relation between the condensation energy and the change in the dynamical structure factor in the normal and the superconducting states. We show that for parameters relevant to cuprates, the extra low-frequency spectral weight associated with the resonance peak in the dynamical structure factor in a superconductor...

We have reexamined the valence-band (VB) and core-level electronic structure of NiO by means of hard and soft x-ray photoemission spectroscopies. The spectral weight of the lowest energy state was found to be enhanced in the bulk sensitive Ni 2p core-level spectrum. A configuration-interaction model including a bound state screening has shown agreement with the core-level spectrum and off- and ...

N-Methyl-D-aspartate (NMDA) receptors are the main calcium-permeable excitatory receptors in the mammalian central nervous system. The NMDA receptor gating is complex, exhibiting multiple closed, open, and desensitized states; however, central questions regarding the conformations and energetics of the transmembrane domains as they relate to the gating states are still unanswered. Here, using s...

The relationship between the Landau–Zener model (which describes transitions energy levels for a time-dependent Hamiltonian) and nonsecular master equations is discussed. This approach allows to describe widely discussed in literature on quantum photosynthesis resonance of vibron difference exciton energies states coupled vibron.

Time-dependent transition amplitudes between bound and continuum states coupled by an intense laser field are expressed in terms of their energy-dependent analogs maintaining the coherence effects through the intervention of complex molecular dressed states (field-induced resonances). A coupledequation method combined with an artificial-channel technique, properly describing the preparation ste...

Intermediate energy Coulomb excitation at 100 MeV/nucleon was used to probe the low-lying level structure of both O and O in the region between 1 and 8 MeV. Discrete 1 states with energies of 5.35~10! and 6.85~5! MeV were observed in O. The strong direct excitation and subsequent g-ray decay of these states, along with B(El) predictions for O levels in this energy region, established their dipo...

We study the energy spectrum of a system of localized states coupled to a 2D electron gas in strong magnetic field. If the energy levels of localized states are close to the electron energy in the plane, the system exhibits a kind of collective behavior analogous to the Dicke effect in optics. The latter manifests itself in “trapping” of electronic states by localized states. At the same time, ...

We study the equilibrium states for an energy functional with a parametric force field on a region of a surface. Consideration of free equilibrium states is based on Lyusternik - Schnirelman's and Skrypnik's variational methods. Consideration of equilibrium states under a constraint of geometrical character is based on an analog of Skrypnik's method, described in [P. Vyridis, {it Bifurcation in...