Fractional dynamics in the L\'evy quantum kicked rotor

We investigate the quantum kicked rotor in resonance subjected to momentum measurements with a L\'evy waiting time distribution. We find that the system has a sub-ballistic behavior. We obtain an analytical expression for the exponent of the power law of the variance as a function of the characteristic parameter of the L\'evy distribution and connect this anomalous diffusion with a fractional dynamics

Gender in endocrine diseases: role of sex gonadal hormones

Gender- and sex- related differences represent a new frontier towards patient-tailored medicine, taking into account that theoretically every medical specialty can be influenced by both of them. Sex hormones define the differences between males and females, and the different endocrine environment promoted by estrogens, progesterone, testosterone, and their precursors might influence both human physiology and pathophysiology. With the term Gender we refer, instead, to behaviors, roles, expectations, and activities carried out by the individual in society. In other words, “gender” refers to a sociocultural sphere of the individual, whereas “sex” only defines the biological sex. In the last decade, increasing attention has been paid to understand the influence that gender can have on both the human physiology and pathogenesis of diseases. Even the clinical response to therapy may be influenced by sex hormones and gender, but further research is needed to investigate and clarify how they can affect the human pathophysiology. The path to a tailored medicine in which every patient is able to receive early diagnosis, risk assessments, and optimal treatments cannot exclude the importance of gender. In this review, we have focused our attention on the involvement of sex hormones and gender on different endocrine diseases

Pion Generalized Parton Distributions within a fully covariant constituent quark model

We extend the investigation of the Generalized Parton Distribution for a charged pion within a fully covariant constituent quark model, in two respects: (i) calculating the tensor distribution and (ii) adding the treatment of the evolution, needed for achieving a meaningful comparison with both the experimental parton distribution and the lattice evaluation of the so-called generalized form factors. Distinct features of our phenomenological covariant quark model are: (i) a 4D Ansatz for the pion Bethe-Salpeter amplitude, to be used in the Mandelstam formula for matrix elements of the relevant current operators, and (ii) only two parameters, namely a quark mass assumed to hold $m_q=~220$ MeV and a free parameter fixed through the value of the pion decay constant. The possibility of increasing the dynamical content of our covariant constituent quark model is briefly discussed in the context of the Nakanishi integral representation of the Bethe-Salpeter amplitude.Comment: Pages 20, figure 11 and table 8. Minor changes. To be published in EPJ

Sub-ballistic behavior in quantum systems with L\'evy noise

We investigate the quantum walk and the quantum kicked rotor in resonance subjected to noise with a L\'evy waiting time distribution. We find that both systems have a sub-ballistic wave function spreading as shown by a power-law tail of the standard deviation.Comment: 4 pages, 4 figure

Four wave mixing oscillation in a semiconductor microcavity: Generation of two correlated polariton populations

We demonstrate a novel kind of polariton four wave mixing oscillation. Two pump polaritons scatter towards final states that emit two beams of equal intensity, separated both spatially and in polarization with respect to the pumps. The measurement of the intensity fluctuations of the emitted light demonstrates that the final states are strongly correlated.Comment: 5 pages, 5 figures In this strongly revised version several new experimental data are adde

Driving the resonant quantum kicked rotor via extended initial conditions

We study the resonances of the quantum kicked rotor subjected to an extended initial distribution. For the primary resonances we obtain the dispersion relation for the map of this system. We find an analytical dependence of the statistical moments on the shape of the initial distribution. For the secondary resonances we obtain numerically a similar dependence. This allows us to devise an extended initial condition which produces an average angular momentum pointing in a preset direction which increases with time with a preset ratio.Comment: 6 pages, 5 figures, send to EPJ

Insights, Pearls, and Guidance on Successfully Producing and Publishing Educational Research

It is the collaborative responsibility of authors, reviewers, and editors to produce high-quality manuscripts that advance knowledge and educational practice. Experience with manuscript submissions to the American Journal of Pharmaceutical Education reveal several areas for improvement that authors can make to increase their submission success rate during the review process. These improvements include research question justification, improved clarity and details regarding methodology, concise data and results, and a discussion that frames research findings in the context of what is already known. This paper summarizes common flaws we see in submitted manuscripts and makes suggestions on how to address these areas and improve publication success

Chaos in non linear dissipative geodynamos

Se analizan distintos modelos de geodinamos y se encuentra que sus soluciones muestran comportamiento caótico comparándolos con sus dimensiones características. El espectro de potencia no se puede interpretar como la superposición de componentes periódicas. Los valores de la dimensión de correlación, exponentes de Lyapunov y entropía de Kolmogorov indican presencia de caos determinístico. La presencia de términos disipativos en las ecuaciones reducen las dimensiones de correlación y fractal permitiendo la interpretación del movimiento irregular del campo electromagnético.Different geodynamo models are analyzed and it is found that their solutions show chaotic behavior compared to their characteristic dimensions. The power spectrum cannot be interpreted as a superposition of periodic components.The values of the correlation dimension, Lyapunov exponents and Kolmogorov entropy give indication of deterministic chaos.The presence of dissipative terms in the equation reduces the correlation and fractal dimensions providing further understanding of the irregular behavior of the electromagnetic field.Asociación Argentina de Geofísicos y Geodesta