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- G. S. Danilov, L. N. Lipatov
- 2008

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)

- G. S. Danilov
- 2008

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)

- G. S. Danilov
- 1995

The method of the perturbative calculation of the multi-loop amplitudes in the su-perstring theories is proposed. In this method the multi-loop superstring amplitudes are calculated from the equations that are none other than Ward identities. The above equations are derived from the requirement that the discussed amplitudes are independent from a choice of… (More)

- G S Danilov
- 2008

Multiloop superstring amplitudes are calculated in the explicit form by the solution of Ward identities. A naive generalization of Belavin-Knizhnik theorem to the superstring is found to be incorrect since the period matrix turns out to be depended on the spinor structure over the terms proportional to odd moduli. These terms appear because fermions mix… (More)

- Michael A. Shifrin, Natalia Kurdumova, +5 authors Togrul Tabasaranskiy
- MIE
- 2015

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)

- G. S. Danilov
- 1995

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)

- G S Danilov
- 2008

The multi-loop amplitudes for the closed, oriented superstring are represented by finite dimensional integrals of explicit functions calculated through the super-Schottky group parameters and interaction vertex coordinates on the supermanifold. The integration region is proposed to be consistent with the group of the local symmetries of the amplitude and… (More)

- G. S. Danilov
- 2008

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)

- G. S. Danilov
- 2008

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)