Browsing Publicaciones Científicas Nanociencias y Materiales by Issue Date
Now showing items 21-40 of 593
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Quantum Hamiltonians and prime numbers
(2003)"A short review of Schrödinger Hamiltonian for which the spectral problem has beenVrelated in the literature to the distribution of the prime numbers is presented here. WeVnotice a possible connection between prime numbers ... -
Words for nobel prizes
(2003)"We present the statistics of the significant nouns and adjectives of social impact figuring in the nominations of the Nobel prizes in Physics and Chemistry over the period of the awards from 1901 to 2001." -
Linear second-order differential equations for barotropic FRW cosmologies
(2003)"Simple linear second-order differential equations have been written down for FRW cosmologies with barotropic fluids by Faraoni. His results have been extended by Rosu, who employed techniques belonging to nonrelativistic ... -
Sistemas finitos bajo presión
(2004)"El estudio de estructuras bajo condiciones extremas como altas presiones, pueden entregarnos nuevas configuraciones y/o situaciones que son metaestables bajo condiciones normales. Estas transiciones pueden estar asociadas ... -
Barotropic FRW cosmologies with a Dirac-like parameter
(2004)"Using the known connection between Schroedinger-like equations and Dirac-like equations in the supersymmetric context, we discuss an extension of FRW barotropic cosmologies in which a Dirac mass-like parameter is introduced. ... -
New direction in nanotube science
(Elsevier, 2004)"We review the latest advances in the production and state-of-the art characterization of B- and N-doped carbon nanotubes (CNTs) and nanofibers. We briefly discuss different approaches to producing these novel doped ... -
The hyperbolic, the arithmetic and the quantum phase
(2004)"We develop a new approach of the quantum phase in an Hilbert space of finite dimension which is based on the relation between the physical concept of phase locking and mathematical concepts such as cyclotomy and the ... -
Classical harmonic oscillator with Dirac-like parameters and possible applications
(2004)"We obtain a class of parametric oscillation modes that we call K-modes with damping and absorption that are connected to the classical harmonic oscillator modes through the “supersymmetric” one-dimensional matrix procedure ... -
Mutually unbiased bases and finite projective planes
(2004)"It is conjectured that the question of the existence of a set of d+1 mutually unbiased bases in a d-dimensional Hilbert space if d differs from a power of a prime number is intimately linked with the problem of whether ... -
Novel curved and strained carbon-based nanostructures: a theoretical study of their electronic properties and their response to laser excitations.
(2005)"In this thesis we review and discuss, from a theoretical point of view, the physical properties of a wide variety of carbon-based nano-materials. This work is focused on systems in which the atomic structures exhibit one ... -
Espectroscopía óptica aplicada al análisis químico de la sangre
(2005)"El análisis de algunos constituyentes de la sangre provee información de diagnostico en los procedimientos clínicos. Motivo por el cual es de gran interés en la comunidad medica el desarrollo de métodos ópticos mediante ... -
Riccati nonhermiticity with application to the Morse potential
(2005)"A supersymmetric one-dimensional matrix procedure, similar to the relationships of the same type between Dirac and Schrodinger equations in particle physics, is described in the general terms. By this means, we are able ... -
Nonlinear second order Ode's: factorizations and particular solutions
(2005)"We present particular solutions for the following important nonlinear second order differential equations: modified Emden, generalized Lienard, convective Fisher, and generalized Burgers-Huxley. For the latter two equations ... -
Transport and diffusion on crystalline surfaces under external forces
(IOP Publishing, 2005)"We present a numerical study of classical particles obeying a Langevin equation and moving on a solid crystalline surface under an external force that may either be constant or modulated by periodic oscillations. We focus ... -
Mutually unbiased phase states, phase uncertainties, and Gauss sums
(2005)"Mutually unbiased bases (MUBs), which are such that the inner product between two vectors in different orthogonal bases is a constant equal to 1/d?, with d the dimension of the finite Hilbert space, are becoming more and ... -
Frenet-Serret vacuum radiation, detection proposals and related topics
(2005)"The paradigmatic Unruh radiation is an ideal and simple case of stationary vacuum radiation patterns related to worldlines defined as Frenet-Serret curves. We review the corresponding body of literature as well as the ... -
Synchronization of the frenet-serret linear system with a chaotic nonlinear system by feedback of states
(2005)"A synchronization procedure of the generalized type in the sense of Rulkov et al [Phys. Rev. E 51, 980 (1995)] is used to impose a nonlinear Malasoma chaotic motion on the Frenet-Serret system of vectors in the differential ... -
The three-step master equation: class of parametric stationary solutions
(2005)"We examine the three-step master equation from the standpoint of the general solution of the associated discrete Riccati equation. We report by this means stationary master solutions depending on a free constant parameter, ...