Whose Law Is It Anyway? The Cultural Legitimacy of International Human Rights in the United States

Whose Law Is It Anyway? The Cultural Legitimacy of International Human Rights in the United States on ResearchGate, the professional network for scientists

Open or Closed: Balancing Border Policy with Human Rights

Open or Closed: Balancing Border Policy with Human Rights on ResearchGate, the professional network for scientists

Phase diagram of H2 adsorbed on graphene

The phase diagram of the first layer of H$_2$ adsorbed on top of a single graphene sheet has been calculated by means of a series of diffusion Monte Carlo (DMC) simulations. We have found that, as in the case of $^4$He, the ground state of molecular hydrogen is a $\sqrt3 \times \sqrt3$ commensurate structure, followed, upon a pressure increase, by an incommensurate triangular solid. A striped phase of intermediate density was also considered, and found lying on top of the equilibrium curve separating both commensurate and incommensurate solids.Comment: 5 pages, 3 figure

Minimal Flavor Violation and the Scale of Supersymmetry Breaking

In this paper we explore the constraints from B-physics observables in SUSY models of Minimal Flavor Violation, in the large tan beta regime, for both low and high scale supersymmetry breaking scenarios. We find that the rare B-decays b -> s gamma and B_s -> mu+ mu- can be quite sensitive to the scale M at which supersymmetry breaking is communicated to the visible sector. In the case of high scale supersymmetry breaking, we show that the additional gluino contribution to the b -> s gamma and B_s -> mu+ mu- rare decay rates can be significant for large tan beta, mu and M_3. The constraints on B_u -> tau nu are relatively insensitive to the precise scale of M. We also consider the additional constraints from the present direct Higgs searches at the Tevatron in the inclusive H/A -> tau tau channel, and the latest CDMS direct dark matter detection experiments. We find that altogether the constraints from B-physics, Higgs physics and direct dark matter searches can be extremely powerful in probing regions of SUSY parameter space for low M_A and large tan beta, leading to a preference for models with a lightest CP-even Higgs mass close to the current experimental limit. We find interesting regions of parameter space that satisfy all constraints and can be probed by Higgs searches at the Tevatron and the LHC and by direct dark matter searches in the near future.Comment: 24 pages, 6 figures. Added citations. Published in PR

Having the Last Word: Human Rights Reporting (Re)Imagined Through Critical Qualitative Methodology

Human rights monitoring and reporting have emerged as major practices of human rights lawyers and advocates in both non-governmental organizations and inter-governmental organizations. This reporting is a form of knowledge production, often geared towards advocacy on behalf of human rights protection but also seeking to provide an ‘objective’ report of some kind. NGOs and IGOs employ a range of methodologies, but these are rarely formalized and tend to rely more on general institutional reputation and credibility, as well as the professionalism of individual practitioners. Some scholars have recommended more formal, standardized methods and have raised the possibility of borrowing models from other contexts. This paper considers contributions that critical methodologists from the social sciences and related disciplines might offer to human rights practice, particularly human rights monitoring and reporting. Traditional methodological approaches in the social sciences and in law have been criticized, interrogated, and (re)developed in recent years from numerous perspectives, but it does not appear that these critical approaches have penetrated international legal work, especially human rights lawyering. This paper suggests that critical qualitative methodologies offer great opportunity to reconceptualize traditional approaches to method and practice in human rights work

Supersolidity in quantum films adsorbed on graphene and graphite

Using quantum Monte Carlo we have studied the superfluid density of the first layer of $^4$He and H$_2$ adsorbed on graphene and graphite. Our main focus has been on the equilibrium ground state of the system, which corresponds to a registered $\sqrt3 \times \sqrt3$ phase. The perfect solid phase of H$_2$ shows no superfluid signal whereas $^4$He has a finite but small superfluid fraction (0.67%). The introduction of vacancies in the crystal makes the superfluidity increase, showing values as large as 14% in $^4$He without destroying the spatial solid order.Comment: 5 pages, accepted for publication in PR