Conditional purity and quantum correlation measures in two qubit mixed states

We analyze and show experimental results of the conditional purity, the quantum discord and other related measures of quantum correlation in mixed two-qubit states constructed from a pair of photons in identical polarization states. The considered states are relevant for the description of spin pair states in interacting spin chains in a transverse magnetic field. We derive clean analytical expressions for the conditional local purity and other correlation measures obtained as a result of a remote local projective measurement, which are fully verified by the experimental results. A simple exact expression for the quantum discord of these states in terms of the maximum conditional purity is also derived.Comment: 16 pages, 5 figures, minor changes, to be published in J. Phys.

Rotator Cuff Disease

Shoulder pain is a common clinical presentation. Though the spectrum of disorders affecting the shoulder is quite diverse, emphasis is often placed on abnormalities of the rotator cuff and glenohumeral joint instability. The rotator cuff plays an important role in both the function and stability of the shoulder. Moreover, its pathology, with early and accurate diagnosis, is amenable to treatment, which can markedly affect patient outcome. This unit presents an MR imaging protocol for evaluation of the glenohumeral joint. Though specific emphasis is placed on the rotator cuff, it can also be used for global assessment of the shoulder.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/145303/1/cpmia2201.pd

MR Arthrography of Shoulder

The glenohumeral joint boasts the greatest range of motion of any peripheral joint in the body, but not without cost; it is also the most frequently dislocated joint in the body. Stability of this articulation is limited for two major reasons. The articulating surface of the glenoid is significantly smaller than that of the humeral head, and the joint capsule is redundant and provides little support. This unit presents a basic MR arthrography protocol for evaluation of glenohumeral joint instability.Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/145405/1/cpmia2202.pd

Fermionic entanglement in the Lipkin model

We examine the fermionic entanglement in the ground state of the fermionic Lipkin model and its relation with bipartite entanglement. It is first shown that the one-body entanglement entropy, which quantifies the minimum distance to a fermionic Gaussian state, behaves similarly to the mean-field order parameter and is essentially proportional to the total bipartite entanglement between the upper and lower modes, a quantity meaningful only in the fermionic realization of the model. We also analyze the entanglement of the reduced state of four single-particle modes (two up-down pairs), showing that its fermionic concurrence is strongly peaked at the phase transition and behaves differently from the corresponding up-down entanglement. We finally show that the first measures and the up-down reduced entanglement can be correctly described through a basic mean-field approach supplemented with symmetry restoration, whereas the concurrence requires at least the inclusion of random-phase-approximation-type correlations for a proper prediction. Fermionic separability is also discussed.Fil: Di Tullio, Marco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Rossignoli, Raúl Dante. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Cerezo, M.. Los Alamos National Laboratory; Estados UnidosFil: Gigena, Nicolás Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentin

Bipartite representations and many-body entanglement of pure states of NN indistinguishable particles

We analyze a general bipartite-like representation of arbitrary pure states of $N$-indistinguishable particles, valid for both bosons and fermions, based on $M$- and $(N-M)$-particle states. It leads to exact $(M,N-M)$ Schmidt-like expansions of the state for any $M<N$ and is directly related to the isospectral reduced $M$- and $(N-M)$-body density matrices $\rho^{(M)}$ and $\rho^{(N-M)}$. The formalism also allows for reduced yet still exact Schmidt-like decompositions associated with blocks of these densities, in systems having a fixed fraction of the particles in some single particle subspace. Monotonicity of the ensuing $M$-body entanglement under a certain set of quantum operations is also discussed. Illustrative examples in fermionic and bosonic systems with pairing correlations are provided, which show that in the presence of dominant eigenvalues in $\rho^{(M)}$, approximations based on a few terms of the pertinent Schmidt expansion can provide a reliable description of the state. The associated one- and two-body entanglement spectrum and entropies are also analyzed.Comment: 17 pages, 5 figure

Percepción de estudiantes, sobre las implicancias éticas de las prácticas clínicas odontológicas durante su formación de grado

El odontólogo como profesional de la salud, para responder en forma integral a las necesidades sociales, debe disponer, no sólo de “un saber saber” y un “saber hacer”, sino también de un "saber ser", en el desempeño profesional. La formación universitaria aporta al desarrollo moral en el que se afianza la práctica profesional. El presente trabajo tuvo como objetivo conocer la percepción de estudiantes, sobre las implicancias éticas de las prácticas clínicas odontológicas durante su formación de grado. Desde un abordaje cualitativo se indagó sobre situaciones o experiencias vivenciadas por estudiantes durante el trayecto formativo de la práctica clínica odontológica, en que se hayan planteado conflictos o dilemas éticos y aspectos relacionados Se realizaron entrevistas en profundidad a estudiantes que durante 2018, cursaban el ciclo profesional de la carrera de odontología de la UNC. El análisis de la información realizado por el método comparativo constante, puso en evidencia que durante algunas prácticas clínicas se presentan situaciones de implicancia ética, que se resuelven frecuentemente, sin sustento teórico ni metodológico, de manera fortuita priorizando la exigencia académica. La capacitación docente en el área de bioética, podría fortalecer una formación más reflexiva e integral, que incluya competencias para tomar decisiones basadas en saberes éticosEspecialización en Docencia Universitari