The structure functions F1 and F2 of the real photon at low virtualities are calculated in the framework of chiral pertubation theory(ChPT) in the zero and first order of ChPT. It is assumed that the virtuality of hard projectile photon Q2 is much less than the characteristic ChPT scale. In this approximation the structure functions are determined by the production of two pions in γγ collisions...

Compton scattering by pion: there is no room for the off–shell effects. Abstract We show that the off–shell contributions in Compton scattering by pion may exist only in the single exchange diagrams. These contributions are canceled completely in the total gauge–invariant amplitude as it confirmed by one–loop calculations. It explains, in particular, some results of the chiral pertubation theor...

GOAL: The NTW package allows the computation of the interaction network of n genes (A, nxn) based on m independent experiments collecting gene expression profiles (X, nxm) with or without the associated transcriptional pertubation matrix (P, nxm, contains the direct targets of each of the m perturbation done on the system). The approach is based on ordinary differential equations (ODE) and 3 op...

BACKGROUND Dysphonia related to head and neck cancer is unique, and demands treatment tailored to its unique pathology. Activate exercises, breathing, counseling, laryngeal manipulation, oral resonance, vocal exercises, and elimination of habits (ABCLOVE) is an 8-week multimodality voice therapy program addressing vocal rehabilitation specifically for patients with head and neck cancer. METHO...

The unparticle has been suggested as a candidate of dark matter. We investigated the growth rate of the density perturbation for the unparticle dark matter in the flat Universe. First, we consider the model in which unparticle is the sole dark matter and find that the growth factor can be approximated well by f = (1+3ωu)Ω γ u , where ωu is the equation of state of unparticle. Our results show t...

We consider the Hartree equation for infinitely many electrons with a constant external magnetic field. For system, we show local well-posedness result when initial data is pertubation of Fermi sea, which non-trace class stationary solution to system. In this case, one particle Hamiltonian Pauli operator, possesses distinct properties from Laplace example, it has discrete spectrum and infinite-...