Population bound effects on bosonic correlations in non-inertial frames

We analyse the effect of bounding the occupation number of bosonic field modes on the correlations among all the different spatial-temporal regions in a setting in which we have a space-time with a horizon along with an inertial observer. We show that the entanglement between A (inertial observer) and R (uniformly accelerated observer) depends on the bound N, contrary to the fermionic case. Whether or not decoherence increases with N depends on the value of the acceleration a. Concerning the bipartition A-antiR (Alice with an observer in Rindler's region IV), we show that no entanglement is created whatever the value of N and a. Furthermore, AR entanglement is very quickly lost for finite N and for infinite N. We will study in detail the mutual information conservation law found for bosons and fermions. By means of the boundary effects associated to N finiteness, we will show that for bosons this law stems from classical correlations while for fermions it has a quantum origin. Finally, we will present the strong N dependence of the entanglement in R-antiR bipartition and compare the fermionic cases with their finite N bosonic analogs. We will also show the anti-intuitive dependence of this entanglement on statistics since more entanglement is created for bosons than for their fermion counterparts.Comment: revtex 4, 12 pages, 10 figures. Added Journal ref

Unveiling quantum entanglement degradation near a Schwarzschild black hole

We analyze the entanglement degradation provoked by the Hawking effect in a bipartite system Alice-Rob when Rob is in the proximities of a Schwarzschild black hole while Alice is free falling into it. We will obtain the limit in which the tools imported from the Unruh entanglement degradation phenomenon can be used properly, keeping control on the approximation. As a result, we will be able to determine the degree of entanglement as a function of the distance of Rob to the event horizon, the mass of the black hole, and the frequency of Rob's entangled modes. By means of this analysis we will show that all the interesting phenomena occur in the vicinity of the event horizon and that the presence of event horizons do not effectively degrade the entanglement when Rob is far off the black hole. The universality of the phenomenon is presented: There are not fundamental differences for different masses when working in the natural unit system adapted to each black hole. We also discuss some aspects of the localization of Alice and Rob states. All this study is done without using the single mode approximation.Comment: 16 pages, 10 figures, revtex4. Added Journal referenc

Control of a robotic arm for transporting objects based on neuro-fuzzy learning visual information

[Abstract] New applications related to robotic manipulation or transportation tasks, with or without physical grasping are being developed. To perform these activities di erent kind of perceptions are need. One of the key perceptions in robotics is vision. However, camera-based systems have inherent errors which a ect the quality of the information obtained. Image distortion slows down information processing and defers data availability to last processing stages, decreasing performance. In this paper, a new approach to correct diverse sources of visual distortions on images in early stages of the data processing is proposed. The goal of the proposed system/algorithm is the computation of the tilt angle of an object transported by a robot. After capturing the image, the computing system extracts the angle using a Fuzzy Filter that corrects all distortions at only one processing step. This filter has been developed by means of Neuro-Fuzzy learning techniques, using data obtained from real experiments. In this way, computing time can be decreased and the performance of the robotic application can be increased. The resulting algorithm has been tried out experimentally in robot transportation tasks in the humanoid robot TEO (Task Environment Operator).Ministerio de Economía y Competitividad; DPI2013-47944-C4-1-RComunidad de Madrid; S2013/MIT-274

Lesson Plan, U.S. History, 8th Grade

TEKS (Texas Essential Knowledge and Skills): 8.6C-Causes and Effects of the Mexican-American War 8.29A- Primary sources on James K. Polk 8.29C-Maps and timeline of the Annexation of Texas, Mexican-American War, & Mexican Cession 4C demonstrate an understanding of the influence of one language and culture on another Lesson objective(s): 1. Students will need to understand the causes of the Mexican-American War 2. Students will need to analyze the dispute of the Texas boundary of Rio Grande River versus Mexico\u27s claim of the Nueces River from Treaty of Velasco. 3. Students will be able to identify political boundaries of the United States, Mexico, Rio Grande River and other geographic locations relevant to Manifest Destiny. Differentiation strategies to meet diverse learner needs: -Special population students will receive visual aids and modified vocabulary to bridge any learning gaps as per ELL strategies, Common Instructional Framework, or Sheltered Instruction or SIOP. -Honors students will be challenge to watch videos or read a primary source document