Exact solution of the 2d2d dimer model: Corner free energy, correlation functions and combinatorics

In this work, some classical results of the pfaffian theory of the dimer model based on the work of Kasteleyn, Fisher and Temperley are introduced in a fermionic framework. Then we shall detail the bosonic formulation of the model {\it via} the so-called height mapping and the nature of boundary conditions is unravelled. The complete and detailed fermionic solution of the dimer model on the square lattice with an arbitrary number of monomers is presented, and finite size effect analysis is performed to study surface and corner effects, leading to the extrapolation of the central charge of the model. The solution allows for exact calculations of monomer and dimer correlation functions in the discrete level and the scaling behavior can be inferred in order to find the set of scaling dimensions and compare to the bosonic theory which predict particular features concerning corner behaviors. Finally, some combinatorial and numerical properties of partition functions with boundary monomers are discussed, proved and checked with enumeration algorithms.Comment: Final version to be published in Nuclear Physics B (53 pages and a lot of figures

Curls, Kinks and Colonization: The Decolonization of Afrodescendant Women’s Bodies in Santo Domingo, Dominican Republic

This paper documents the experiences of Afrodescendant women in the Dominican Republic who choose to wear their hair naturally curly, despite the norm to straighten it. I argue that Afrodescendant Dominican women are decolonizing racial and gendered discourses of the Afrodescendant body through their pursuit of beauty, blackness, health and self-definition. I draw on Ana Irma Rivera Lassén\u27s allegory of the spiderweb to suggest that my informants are the spiders of their webs, weaving the discourses of the Afrodescendant female body into a web in which they are free to move in/through their multiple identities and find empowerment

Immigration, Criminalization, and Disobedience

This symposium essay explores two contending visions of immigration justice: one focused on expanding procedural rights for immigrants, and a second associated with a movement of immigrant youth who have come out en masse as “undocumented and unafraid,” issuing a fundamental challenge to immigration restrictionism. As immigration enforcement in the United States increasingly relies on criminal prosecution and detention, advocates for reform have increasingly turned to constitutional criminal procedure, seeking greater procedural protections for immigrants. But this essay argues that this focus on enhanced procedural protections is woefully incomplete as a vision of immigration justice. Although a right to counsel, for example, may provide comfort and aid to certain vulnerable individuals, such procedural protections are unlikely to change the quasi-criminal character of immigration enforcement or to address the plight of the millions of people without a path to lawful status. Just as U.S. constitutional criminal procedure failed to ameliorate the harshness of substantive criminal law, more robust immigration procedural protections would likely fail to reorient immigration enforcement in a more humane direction. By contrast, a growing movement of immigrant *557 youth offers a more expansive conception of immigration reform. As these immigrant youth lay claim to a “right to remain,” infiltrate immigration detention centers, and crash the border, they have reshaped our political and legal discourse, gesturing towards an alternative vision of immigration justice

Confronting Criminal Law’s Violence: The Possibilities of Unfinished Alternatives

Confronting criminal law’s violence calls for an openness to unfinished alternatives — a willingness to engage in partial, in process, incomplete reformist efforts that seek to displace conventional criminal law administration as a primary mechanism for social order maintenance. But despite all indications that the status quo in U.S. criminal law administration is profoundly dysfunctional — an institutional manifestation of the deepest pathologies in our society — contemporary criminal law reform efforts and scholarship focus almost exclusively on relatively limited modifications to the status quo. These modifications may well render criminal law administration more humane, but fail to substitute alternative institutions or approaches to realize social order maintenance goals. In particular, these reformist efforts continue to rely on conventional criminal regulatory approaches to a wide array of social concerns, with all of their associated violence: on criminalization, policing, arrest, prosecution, incarceration, probation, and parole. Thus, even as these reformist approaches may offer substantial benefits, they remain wed to institutions that perpetrate criminal law’s violence and to limited temporal and imaginative horizons. By contrast, this essay explores a series of criminal law reform alternatives that offer more fundamental substitutes for criminal law administration. More specifically, this essay focuses on the possibilities of alternatives to criminal case processing that substitute for the order-maintaining functions currently attempted through criminal law enforcement. These alternatives hold the potential to draw into service separate institutions and mechanisms from those typically associated with criminal law administration. Further, these alternatives enlist on more equal footing and invite feedback and input from persons subject to criminal law enforcement. Importantly, this latter subset of reform alternatives is decidedly unfinished, partial, in process. I will argue that this unfinished quality ought not to be denied as an embarrassment or flaw, but instead should be embraced as a source of critical strength and possibility. In this dimension, this essay is a preliminary call for more attention on the part of legal scholars and criminal law reform advocates to unfinished partial substitutes for the order-maintaining work performed by criminal law administration — a call to attend further to as yet incomplete reformist alternatives that may portend less violent and more self-determined ways of achieving some measure of social order and collective peace. I begin to develop this argument by drawing, in particular, on the work of the Norwegian social theorist and prison abolitionist Thomas Mathiesen

Why espresso? : Explaining changes in European coffee preferences from a production of culture perspective

Since the 1990s supposedly ‘historic’ fault lines separating coffee preferences and practices across the European continent have been broken down. The consumption of Italian-style espresso-based beverages outside the home is now widespread. Much of this is drunk in branded coffee-shop outlets, based on a format popularised in the United States. This article investigates these changes employing the culture of production perspective. It is structured in three parts. The first investigates the formation of quasi-national coffee-drinking styles in the at-home and away-from-home sectors with particular reference to Italy; the second analyses the transformation of out-of-home coffee-drinking in the UK during the 1990s; and the third examines the spread of Italian-style coffee across the European continentPeer reviewe

Expanding Voter Registration for Low-Income Virginians: The Impact of the National Voter Registration Act

Voter registrations in Virginia public assistance agencies declined by 87 percent between 1995-1996 and 2005-2006, despite increased enrollment in public benefit programs like food stamps. Field investigators in early 2008 confirmed that state offices were not offering voter registration, as required by the National Voter Registration Act. Working cooperatively with Demos and its state partners, Virginia has achieved a dramatic change of course. The first several data reports indicate an eightfold increase in voter registrations

Two-qubit correlations revisited: average mutual information, relevant (and useful) observables and an application to remote state preparation

Understanding how correlations can be used for quantum communication protocols is a central goal of quantum information science. While many authors have linked global measures of correlations such as entanglement or discord to the performance of specific protocols, in general the latter may require only correlations between specific observables. In this work, we first introduce a general measure of correlations for two-qubit states based on the classical mutual information between local observables. We then discuss the role of the symmetry in the state's correlations distribution and accordingly provide a classification of maximally mixed marginals states (MMMS). We discuss the complementarity relation between correlations and coherence. By focusing on a simple yet paradigmatic example, i.e., the remote state preparation protocol, we introduce a method to systematically define proper protocol-tailored measures of correlations. The method is based on the identification of those correlations that are relevant (useful) for the protocol. The approach allows on one hand to discuss the role of the symmetry of the correlations distribution in determining the efficiency of the protocol, both for MMMS and general two-qubit quantum states, and on the other hand to devise an optimized protocol for non-MMMS that can have a better efficiency with respect to the standard one. The scheme we propose can be extended to other communication protocols and more general bipartite settings. Overall our findings clarify how the key resources in simple communication protocols are the purity of the state used and the symmetry of correlations distribution.Comment: Revised Figures, improved notation and clearer text to better highlight the main finding