Decoherence of Einstein-Podolsky-Rosen steering

We consider two systems A and B that share Einstein-Podolsky-Rosen (EPR) steering correlations and study how these correlations will decay, when each of the systems are independently coupled to a reservoir. EPR steering is a directional form of entanglement, and the measure of steering can change depending on whether the system A is steered by B, or vice versa. First, we examine the decay of the steering correlations of the two-mode squeezed state. We find that if the system B is coupled to a reservoir, then the decoherence of the steering of A by B is particularly marked, to the extent that there is a sudden death of steering after a finite time. We find a different directional effect, if the reservoirs are thermally excited. Second, we study the decoherence of the steering of a Schr\"odinger cat state, modeled as the entangled state of a spin and harmonic oscillator, when the macroscopic system (the cat) is coupled to a reservoir

Guzmán el Bueno : drama en cuatro actos

Copia digital. Valladolid : Junta de Castilla y León. Consejería de Cultura y Turismo, 2009-201

Formalización de la propiedad informal urbana y calidad de vida urbana de beneficiarios distrito de Trujillo, 2021

La presente investigación tuvo como objetivo determinar la relación entre Formalización de la propiedad informal urbana y Calidad de vida urbana, de beneficiarios distrito de Trujillo 2021. Investigación de tipo aplicada, de enfoque cuantitativo, diseño no experimental, de corte transversal y descriptivo correlacional. En esta investigación se utilizó la técnica de la encuesta, con instrumento de recolección de información al cuestionario, conformado por 34 preguntas debidamente validado por expertos, y con escala de medición ordinal tipo Likert, aplicada a una muestra de 93 beneficiarios titulados de las diferentes posesiones y centros urbanos informales del distrito de Trujillo, que han concluido con la formalización de la propiedad vía Prescripción Adquisitiva de Dominio Integral, por la Municipalidad Provincial de Trujillo a través de la Gerencia del Plan de Desarrollo Territorial. Los resultados obtenidos fueron sometidos al análisis estadístico de programas informáticos como Excel y SPPSS versión 26, determinando que, de acuerdo a la prueba no paramétricas de Spearman, que obtuvo el coeficiente de correlación de 0.497, y el valor de significancia p=0.001 (p<0.50), se puede determinar que Formalización de la propiedad informal urbana y Calidad de vida urbana, tienen relación directa positiva de magnitud moderada

Manual de literatura: principios generales de política y retórica

v. 1 (298 p.

Dynamics of fluctuations in a fluid below the onset of Rayleigh-B\'enard convection

We present experimental data and their theoretical interpretation for the decay rates of temperature fluctuations in a thin layer of a fluid heated from below and confined between parallel horizontal plates. The measurements were made with the mean temperature of the layer corresponding to the critical isochore of sulfur hexafluoride above but near the critical point where fluctuations are exceptionally strong. They cover a wide range of temperature gradients below the onset of Rayleigh-B\'enard convection, and span wave numbers on both sides of the critical value for this onset. The decay rates were determined from experimental shadowgraph images of the fluctuations at several camera exposure times. We present a theoretical expression for an exposure-time-dependent structure factor which is needed for the data analysis. As the onset of convection is approached, the data reveal the critical slowing-down associated with the bifurcation. Theoretical predictions for the decay rates as a function of the wave number and temperature gradient are presented and compared with the experimental data. Quantitative agreement is obtained if allowance is made for some uncertainty in the small spacing between the plates, and when an empirical estimate is employed for the influence of symmetric deviations from the Oberbeck-Boussinesq approximation which are to be expected in a fluid with its density at the mean temperature located on the critical isochore.Comment: 13 pages, 10 figures, 52 reference

Guzmán el Bueno : drama en cuatro actos

Copia digital. Valladolid : Junta de Castilla y León. Consejería de Cultura y Turismo, 2009-201