In this publication the construction of an automatic algorithm to subtract infrared divergences in real QCD corrections through the Catani-Seymour dipole subtraction method [1] is reported. The resulting computer code has been implemented in the matrix element generator AMEGIC++ [2]. This will allow for the automatic generation of dipole subtraction terms and their integrals over the oneparton ...

In this paper a chaotic frequency hopping sequences generator based on dynamic quantification is proposed to address the problem of phase space reconstruction attack. This method is based on twice divisions of dynamic system interval and rotated gear dynamic quantification. Analyzed by computer simulation and statistical methods, the paper compared the performance of the proposed scheme with th...

We present a new formalism for parton shower simulation of QCD jets, which incorporates the following features: invariance under boosts along jet axes, improved treatment of heavy quark fragmentation, angular-ordered evolution with soft gluon coherence, more accurate soft gluon angular distributions, and better coverage of phase space. It is implemented in the new HERWIG++ event generator.

Features of synchronization picture in the system with the limit cycle embedded in a three-dimensional phase space are considered. By the example of Ressler system and Dmitriev-Kislov generator under the action of a periodic sequence of δ-function it is shown, that synchronization picture significantly depends on the direction of pulse action. Features of synchronization tons appeared in these ...

Features of synchronization picture in the system with the limit cycle embedded in a three-dimensional phase space are considered. By the example of Rössler system and Dmitriev-Kislov generator under the action of a periodic sequence of δ-function it is shown, that synchronization picture significantly depends on the direction of pulse action. Features of synchronization tons appeared in these ...

In this paper we consider a phase space path integral for general time-dependent quantum operations, not necessarily unitary. We obtain the path integral for a completely positive quantum operation satisfied Lindblad equation (quantum Markovian master equation). We consider the path integral for quantum operation with a simple infinitesimal generator. PACS numbers: 03.67.Lx, 03.67.−a, 03.65.−w

Data from orbits of a symplectic integrator can be interpolated so as to construct an approximation to the generating function of a Poincar e map. The time required to compute an orbit of the symplectic map induced by the generator can be much less than the time to follow the same orbit by symplectic integration. The construction has been carried out previously for full-turn maps of large parti...

In this paper, the performance of extended super orthogonal space time trellis coded orthogonal frequency division multiplexing system is investigated in frequency selective wideband wireless channels. New 16, 32 and 64 states full rate extended super orthogonal space time trellis codes for quadrature phase shift keying is proposed using the generator matrix notation and their frame error rate ...