The strong coupling Kondo lattice model as a Fermi gas

The strong coupling half-filled Kondo lattice model is an important example of a strongly interacting dense Fermi system for which conventional Fermi gas analysis has thus far failed. We remedy this by deriving an exact transformation that maps the model to a dilute gas of weakly interacting electron and hole quasiparticles that can then be analyzed by conventional dilute Fermi gas methods. The quasiparticle vacuum is a singlet Mott insulator for which the quasiparticle dynamics are simple. Since the transformation is exact, the electron spectral weight sum rules are obeyed exactly. Subtleties in understanding the behavior of electrons in the singlet Mott insulator can be reduced to a fairly complicated but precise relation between quasiparticles and bare electrons. The theory of free quasiparticles can be interpreted as an exactly solvable model for a singlet Mott insulator, providing an exact model in which to explore the strong coupling regime of a singlet Kondo insulator.Comment: 10pages, 2 figure

The Transformation of La prueba de los ingenios into Labyrinth of Desire: Adapting Lope de Vega for a Contemporary American Audience

Women’s equality, cross dressing, homoerotic desire—all the makings of a twenty-firstcentury comedy—were the focus of a seventeenth century play by Lope de Vega, La prueba de los ingenios (1612?-1613?). In the last two decades, interest in this work has increased considerably. Evidence of the rising popularity of the play is an English-language adaptation by Caridad Svich, which she titled The Labyrinth of Desire. The professional production at Miracle Theatre is the focus of this study. After a brief discussion of the homoerotic theme of the work and general issues of the translation and/or adaptation of the Comedia, I will then examine some of the specific changes Svich made to Lope’s original work in her adaptation and will use my class of students as a type of case study of the reactions to the modernization of a seventeenth-century work

Multimodal Medicine: Pain Control Potential

Due to the continual problem with overuse of, overdose on, and abuse of opioid medications for the past three decades it is paramount that effective, cheap, and above all safe forms of pain control are studied and applied. Multimodal pain management utilizes a combination of pharmacological and non pharmacological therapies in synergy to control pain and reduce dependence on strictly opioids. Combining the effects of medications or therapies that focus on treating different types or sources of pain such as inflammatory pain, neurological pain, etc. With the adoption of this method of pain management, the longstanding effects of the opioid epidemic and be counteracted, healthcare costs can be diminished, length of hospitals stays can be reduced, and pain can be effectively controlled

Common and Distinct Functional Brain Networks for Intuitive and Deliberate Decision Making

Reinforcement learning studies in rodents and primates demonstrate that goal-directed and habitual choice behaviors are mediated through different fronto-striatal systems, but the evidence is less clear in humans. In this study, functional magnetic resonance imaging (fMRI) data were collected whilst participants ( n = 20) performed a conditional associative learning task in which blocks of novel conditional stimuli (CS) required a deliberate choice, and blocks of familiar CS required an intuitive choice. Using standard subtraction analysis for fMRI event-related designs, activation shifted from the dorso-fronto-parietal network, which involves dorsolateral prefrontal cortex (DLPFC) for deliberate choice of novel CS, to ventro-medial frontal (VMPFC) and anterior cingulate cortex for intuitive choice of familiar CS. Supporting this finding, psycho-physiological interaction (PPI) analysis, using the peak active areas within the PFC for novel and familiar CS as seed regions, showed functional coupling between caudate and DLPFC when processing novel CS and VMPFC when processing familiar CS. These findings demonstrate separable systems for deliberate and intuitive processing, which is in keeping with rodent and primate reinforcement learning studies, although in humans they operate in a dynamic, possibly synergistic, manner particularly at the level of the striatum.Peer reviewedFinal Published versio