An analysis of a minimal vectorlike extension of the Standard Model

We analyze an extension of the Standard Model with an additional SU(2) hypercolor gauge group keeping the Higgs boson as a fundamental field. Vectorlike interactions of new hyperquarks with the intermediate vector bosons are explicitly constructed. We also consider pseudo-Nambu--Goldstone bosons caused by the symmetry breaking SU(4)-> Sp(4). A specific global symmetry of the model with zero hypercharge of the hyperquark doublets ensures the stability of a neutral pseudoscalar field. Some possible manifestations of the lightest states at colliders are also examined.Comment: 16 pages, 1 table, v.2: minor modification, reference is added, formula (62) is correcte

Two-loop corrections to false vacuum decay in scalar field theory

We consider radiative corrections to false vacuum decay in a four-dimensional scalar field theory with cubic and quartic potential. Using planar thin wall approximation we were able to get analytical expression for the decay rate up to two loop order. The results obtained employ dimensional regularization and $\overline{MS}$ renormalization scheme.Comment: 20 pages, 3 figures, clarifications adde

Non-planar elliptic vertex

We consider the problem of obtaining higher order in regularization parameter $\epsilon$ analytical results for master integrals with elliptics. The two commonly employed methods are provided by the use of differential equations and direct integration of parametric representations in terms of iterated integrals. Taking non-planar elliptic vertex as an example we show that in addition to two mentioned methods one can use analytical solution of differential equations in terms of power series. Moreover, in the last case it is possible to obtain the exact in $\epsilon$ resultsComment: 26 pages, 4 figure

Micro Energy Complex Based on Wet-SteamTurbine

AbstractThis work is dedicated to the development of the micro energy complex concept based on a wet-steam microturbine and mixed use of conventional and unconventional energy sources for standalone supply of distributed energy consumer, adapted to Russia's climate condition. The development is stipulated by absence of low powered micro energy complexes (MEC) for standalone individual low rise energy consumers at the power supply market. This article describes the working out of the energy complex cycle arrangement, the choice of optimal power for a standalone consumer and the development of wet-steam micro turbin