Cold asymmetrical fermion superfluids

In this work we investigate the general properties and the ground state of an asymmetrical dilute gas of cold fermionic atoms, formed by two particle species having different densities. We have show in a recent paper, that a mixed phase composed of normal and superfluid components is the energetically favored ground state of such a cold fermionic system. Here we extend the analysis and verify that in fact, the mixed phase is the preferred ground state of an asymmetrical superfluid in various situatiations. We predict that the mixed phase can serve as a way of detecting superfluidity and estimating the magnitude of the gap parameter in asymmetrical fermionic systems.Comment: 21 pages, 5 figures, RevTex, typos corrected, introduction improved, accepted for publication in PR

Eating Pizza in Brazil: Poverty and Other Social Issues

Latin American Studie

The CHA in the City

The last time York University welcomed the “Learneds” was 1969, and at that point the institution was perched on the distant edge of urban life next to functioning farms. Thirty-seven years later the urban frontier has moved far further out into the Ontario farmland, and the university is now surrounded by dense housing developments and is only a quick ten-minute bus ride to the subway. It seemed appropriate, then, for the CHA to take up this year’s Congress theme of “The City.

We're on a roll - Let's keep it going

The pulse of the CHA is remarkably strong right now. New members have been pouring in, bringing new energy and commitment. Important new projects are unfolding. Our association has been rising to the many challenges facing historians and others in historical and cultural work. It has been an exhilarating time to be President

Neutral Pion Decay Width in a Hot and Dense Medium

We study the behavior of the $\pi^0$ width as a function of temperature and density. We provide simple expressions for the neutral pion width in a hot and dense medium based on a renormalized version of the microscopic Nambu Jona Lasinio model. Then we consider the two cases where the pion mass is finite or vanishes at the critical temperature and discuss the phenomenological consequences of both cases.Comment: RevTeX, 11 pages, 11 figures, PRC versio

Inaccessible through oversight: the need for inclusive game design

Games are an important part of modern culture. The nature of most video games is such that it can be difficult for individuals with impairments to enjoy many titles. In many cases, this is not due to the games themselves presenting an impossible challenge, but because the games have been left inaccessible through the omission of common features. Mainstream titles are often accessible and inaccessible by turns. This strongly suggests that the resultant inaccessibility is an oversight rather than conscious design. Awareness building is an important process in improving the inclusivity of game titles. This in turn is important in ensuring that all members of society have an opportunity to enjoy a valuable recreational form. To this end, the essay discusses both the types of disability that could be supported and some common mechanisms by which this can be done. A short overview of several prominent game titles is included to provide real world context for the discussion. In this essay, the author argues that ensuring accessibility need not be a costly or an onerous task, and that great strides can be made by, simply adopting the existing good practice that is currently spread across mainstream titles

The trial of John Lilburne October 1649: a new perspective

The trial of John Lilburne for treasonable, seditious libel that took place at the Guildhall in London on the 24th, 25th and 26th of October 1649 has held a clear and unambiguous place in the consciousness of the majority of those that have written on the subject. It has been portrayed as a victory for John Lilburne and for the truth and force of his rhetoric. This research sought to re- examine the historical evidence for this interpretation that has emerged as the traditional orthodoxy. Mitigating factors to this was to look at the context of the trial within the year of 1649, the relationship between accused and the State and also the accused and the trial’s primary and most prominent chronicler. The study endeavors to shed new light on the tensions that existed within the newly formed Commonwealth State and how these impacted on the circumstances of the trial. These tensions not only existed between prosecutors and defendant, propaganda and public opinion, but are also evidenced within the highest echelons of the State’s power structure. The research deliberately sought to examine the areas that have been less travelled by previous writers on the trial. These aspects include: the stance that was developed by those that opposed John Lilburne, Clement Walker’s interpretation of the event and how this has influenced many future writings on the trial, the under reported first day of the trial and also if the acquittal at the end of the trial was truly the victory that has been maintained. The aim was to give a more balanced and studied interpretation to what occurred. This was attempted by using less documented sources such as those associated with the first day and the evidence supplied by contemporary news books. It also seeks to re-examine the works of John Lilburne to help revaluate and glean a new understanding of the forces and processes that centered on the Guildhall before, during and after the trial

Fiscal and Monetary Policies in a Keynesian Stock-Flow Consistent Model

Following the New Classical Macroeconomics and the New Keynesian Macroeconomics, the independence of central banks significantly increased after 1990, which could preclude the coordination between the fiscal and the monetary policies. The purpose of this paper is to consider the stabilizing effects of fiscal policy within the framework of the new monetary policies implemented by independent central banks.Firstly, we build a Post Keynesian stock-flow consistent (SFC) model with a private banks sector introducing more realistic features. New Keynesian Macroeconomics replaces the three equations of the Keynesian synthesis (IS-LM-Phillips Curve) by three new equations of the new consensus: an IS relation, a Taylor Rule and a New Keynesian Phillips Curve (IS-TR-NKPC). Our Post Keynesian SFC model replaces the IS relation. Secondly, we make simulations by imposing supply shocks (cost push) corresponding to an inflationary shock. The consequences are examined for two kinds of policy mix, for two countries: (i) For country (1), monetary policy is determined by a standard Taylor rule that corresponds to a dual mandate: output gap and inflation gap. Fiscal policy has a countercyclical effect. Broadly speaking, country (1) describes the United States. (ii) For country (2), monetary policy is determined by a ‘truncated’ Taylor rule that corresponds to a unique mandate: inflation gap only. Fiscal policy is neutralized, because we assume that the ratio of the current deficit of the Government (GD) on the GDP is constant and equal to zero, as imposed by the Maastricht Treaty. Broadly speaking, country (2) describes the European Union.Monetary policy, fiscal policy, stock- flow consistent model, post-keynesian macroeconomics