Burman's Ode to El Once Neighborhood

This is the published version, made available with the permission of the publisher. Copyright 2011 Brandeis University. All rights reserved.In the mid-1990s, young directors such as Daniel Burman began making films about ethnic identities and multiple subjectivities in Argentina. Because these filmmakers relied more on personal stories than on overtly political or historical issues, they paved the way for various ethnic communities to be the focus of Argentine films. Although there is a history of Jewish-themed films in Argentine cinema, there have been few Jewish directors who told these tales from a personal, semi-autobiographical standpoint. In previous decades, the few films that represented narratives of Argentine Jews included Juan Jose Jusids The Jewish Gauchos (1974); Beda Docampo Feijoos World War II drama, Beneath the World (1987); Raul de la Torres Poor Butterfly (1986); and Eduardo Mignognas Autumn Sun (1996). The directors themselves, with the exception of Feijoo, were not of Jewish origin, but they made thoughtful films with wide-ranging and nuanced depictions of Jews in Argentina

Dynamical susceptibilities in strong coupling approach

A general scheme to calculate dynamical susceptibilities of strongly correlated electron systems within the dynamical mean field theory is developed. Approach is based on an expansion over electron hopping around the atomic limit (within the diagrammatic technique for site operators: projection and Hubbard ones) in infinite dimensions. As an example, the Falicov-Kimball and simplified pseudospin-electron models are considered for which an analytical expressions for dynamical susceptibilities are obtained.Comment: 2 pages, 3 eps figures, final version published in proceedings of M2S-HTSC-VI (Houston

Strongly correlated multilayered nanostructures near the Mott transition

We examine devices constructed out of multilayered sandwiches of semi-infinite metal--barrier--semi-infinite metal, with the barrier tuned to lie near the quantum critical point of the Mott metal-insulator transition. By employing dynamical mean field theory, we are able to solve the many-body problem exactly (within the local approximation) and determine the density of states through the nanostructure and the charge transport perpendicular to the planes. We introduce a generalization of the Thouless energy that describes the crossover from tunneling to incoherent thermally activated transport.Comment: 7 pages, 6 figures, conference proceedings for the 24th international conference in theoretical physics, Ustron, Poland, submitted to phys. stat. solidi.

Central-cell And Screening Effects On The Binding Energies Of Neutral Chalcogen Impurities In Silicon

The binding energies of D0 states in S-, Se-, and Te-doped silicon crystals are calculated within a variational scheme in the effective-mass approximation and with a Chandrasekhar-type variational function for the two-electron envelopes. Central cells are modeled with a constant core potential within the impurity sphere. Screening effects for the potential and the electron-electron interaction are taken into account by means of a position-dependent dielectric function. Results are compared with recent theoretical and experimental work. It is found that central-cell effects and position-dependent screening are essential to account for the experimental data. © 1986 The American Physical Society.33128765876

Finite-temperature phase diagram of nonmagnetic impurities in high-temperature superconductors using a d=3 tJ model with quenched disorder

We study a quenched disordered d=3 tJ Hamiltonian with static vacancies as a model of nonmagnetic impurities in high-Tc materials. Using a position-space renormalization-group approach, we calculate the evolution of the finite-temperature phase diagram with impurity concentration p, and find several features with close experimental parallels: away from half-filling we see the rapid destruction of a spin-singlet phase (analogous to the superconducting phase in cuprates) which is eliminated for p > 0.05; in the same region for these dilute impurity concentrations we observe an enhancement of antiferromagnetism. The antiferromagnetic phase near half-filling is robust against impurity addition, and disappears only for p > 0.40.Comment: 5 pages, 4 figures; replaced with published versio

Voices from the Small Cinemas: Beyond “the Remaining Countries”

This is the author's accepted manuscript, made available with the permission of the publisher. Copyright 2012, Intellect, Ltd.This introduction to a special volume dedicated to translations of recent writings from underexamined cinematic traditions in Latin America (such as Bolivian, Cuba, Colombia, Peru and Puerto Rico) argues for the amplification of voices from “small” cinemas as essential to understanding contemporary cinema from the region as a whole

Ground-states of the three-dimensional Falicov-Kimball model

The systematic study of ground-state properties of the three-dimensional Falicov-Kimball model is performed by a well-controlled numerical method. The results obtained are used to categorize the ground-state configurations according to common features for weak, intermediate and strong interactions. It is shown that only a few configuration types form the basic structure of the phase diagram. In particular, the largest regions of stability correspond to phase segregated configurations, striped configurations and configurations in which electrons are distributed in diagonal planes with incomplete chessboard structure. Near half-filling, mixtures of two phases with complete and incomplete chessboard structure are determined. The relevance of these results for a description of real material is discussed.Comment: 9 pages, 4 figure

One Dimensional Continuum Falicov-Kimball Model in the Strongly Correlated Limit

In this paper we study the thermodynamics of the one dimensional continuum analogue of the Falicov-Kimball model in the strongly correlated limit using a method developed by Salsburg, Zwanzig and Kirkwood for the Takahashi gas. In the ground state it is found that the $f$ electrons form a cluster. The effect of including a Takahashi repulsion between $f$ particles is also studied where it is found that as the repulsion is increased the ground state $f$ electron configuration changes discontinuously from the clustered configuration to a homogeneous or equal spaced configuration analogous to the checkerboard configuration which arises in the lattice Falicov-Kimball model.Comment: 17 pages, Standard Latex File (UUencoded Postscript file of figures available upon request. To appear in physica A) MELB-MATHS-PP-1096783, email: [email protected]