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We consider scattering amplitudes in string models in the Regge limit of high energies and fixed momentum transfers with the use of the unitarity in direct channels. Intermediate states are taken in the multi-Regge kinematics corresponding to the production of resonances with fixed invariant masses and large relative rapidities. In QCD such kinemat-ics(More)
The unitarity equations for the boson interaction amplitudes in the superstring theory are used to calculate the interaction amplitudes including the Ramond states, which are 10-fermion and Ramond bosons. The n-loop, 4-point amplitude with two massless Neveu-Schwarz bosons and two massless Ramond states is obtained explicitly. It is shown that, in addition,(More)
Data collected in electronic patient records (EPR) databases may be used for different goals besides their direct purpose - information support for medical staff in their everyday activities. One of the most promising spheres is a monitoring of various processes induced in medical facility. In our studies EPR serves as a basis for healthcare associated(More)
The charge screening, confinement of fermion quantum numbers and the chiral con-densate formation in two-dimensional QED is studied in details. It is shown that charge screening and confinement of fermion number in two-dimensional QED is due to an appearance of gauge fields which nullify the Dirac determinant D(A). An appearance of the fields of another(More)
Unimodular transformations of the supermanifolds and the calculation of the multi-loop amplitudes in the superstring theory Abstract The modular transformations of the (1|1) complex supermanifolds in the like-Schottky modular parameterization are discussed. It is shown that these " supermodu-lar " transformations depend on the spinor structure of the (1|1)(More)
Superstring amplitudes of an arbitrary genus are calculated through super-Schottky parameters by a summation over the fermion strings. For a calculation of divergent multi-loop fermion string amplitudes a supermodular invariant regularization procedure is used. A cancellation of divergences in the superstring amplitudes is established. Grassmann variables(More)
On cruel mistakes in the calculation of multi-loop superstring amplitudes, the ambiguity of the modular integral and the integration over the module space Abstract Widely spread cruel misconceptions and mistakes in the calculation of multi-loop superstring amplitudes are exposed. Correct calculations are given. It is shown that the cardinal mistake in the(More)