There are three equivalent forms of action for a string in the bosonic string theory: a first-order form (Hamiltonian formalism), a second-order form (Polyakov action), and a nonlinear form (Nambu-Goto action). All three ...

The DVB-T system is the most widespread in the world and represents the latest modulation and coding technologies, which provides the transmission of audio and video services to subscribers. The DVB-T2 system, like DVB-T, ...

The study of integrable systems or solvable nonlinear differential equations (NDE) has been an active area of research since the discovery of the inverse scattering method. These equations are in a sense universal because ...

To describe some physical process further, it becomes more and more important to find exact solutions and interactions among solutions of nonlinear wave solutions. In this paper, we study the two-dimensional nonlocal ...

We consider the application of the Yang-Baxter equation in multiloop calculations in quantum field theory. An important (from the point of view of the physical applications) problem in the analytical evaluations of ...

We investigate solutions of Witten-Dijkgraaf-E.Verlinde-H.Verlinde (WDVV) equations. The article discusses nonlinear equations of the third order for a function f = f(x; t) ) of two independent variables x; t . The ...

This paper describes the optical planar waveguide Bragg grating including silica waveguide, polymeric waveguide, and silicon-on-insulator (SOI) waveguide in application for biosensors. Topic includes design and fabrication ...