arXiv subjects

A. Petrov

Publications and source records attributed to A. Petrov.

21 records · Page 2Linked to original sources

arXiv2007

Lorentz-CPT violation, radiative corrections and finite temperature

In this work we investigate the radiatively induced Chern-Simons-like terms in four-dimensions at zero and finite temperature. We use the approach of rationalizing the fermion propagator up to the leading order in the CPT-violating coupling $b_μ$. In this approach, we have shown that although the coefficient of Chern-Simons term can be found unambiguously in different regularization schemes at zero or finite temperature, it remains undetermined. We observe a correspondence among results obtained at finite and zero temperature.

hep-th↗

arXiv2003

Flow-based analysis of Internet traffic

We propose flow-based analysis to estimate quality of an Internet connection. Using results from the queuing theory we compare two expressions for backbone traffic that have different scopes of applicability. A curve that shows dependence of utilization of a link on a number of active flows in it describes different states of the network. We propose a methodology for plotting such a curve using data received from a Cisco router by NetFlow protocol, determining the working area and the overloading point of the network. Our test is an easy way to find a moment for upgrading the backbone.

cs.NI↗

arXiv1997

Two-Structure Framework for Hamiltonian Dynamical Systems

The Lie product and the order relation are viewed as defining structures for Hamiltonian dynamical systems. Their admissible combinations are singled out by the requirement that the group of the Lie automorphisms be contained in the group of the order automorphisms (Lie algebras with invariant cones). Taking advantage of the reciprocal independence of the relevant structures, the inclusion relation between the two automorphism groups can be reversed; a procedure which leads to an entirely new formal language (ordered linear spaces with invariant Lie products). Presumably it offers an alternative description for quantum systems, radically different from the conventional algebraic models.

quant-ph↗