4,979 research outputs found

    Monopole percolation in scalar QED

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    Monopole Percolation was first introduced in the study of the non-compact lattice QED in both, the pure case and coupled to Higgs fields. Monopole percolation has been also observed coupled to the monopole condensation in the study of the pure gauge compact QED. We present here the results coming from the analysis of the role of the monopole percolation in the coupled gauge-higgs compact QED.Comment: 3 pages, 5 Postscript figures included using uufiles, uses epsf.tex. Poster presented in Lattice'97 conferenc

    Recent Results in Scalar QED

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    In this talk we present some recent and new results on the phase structure and the continuum limit of lattice formulation of pure gauge QED coupled to Higgs fields. We show the presence of second order phase transition lines allowing for a continuum limit. Nevertheless, finite size analysis shows that this theory is logarithmically trivial. The role of magnetic monopoles is also shown.Comment: PS file with figures included, 3 pag., Pre-UAB-FT-330 (to appear in the Lattice93 Proceedings

    Gene diversity among some endogamous population of Amravati District, Maharashtra, India.

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    The present work deals with the distribution of ABO, Rh and sickling alleles as markers to study the genetic structure and micro-demarcation among castes and tribal populations from the Amravati district of Maharashtra. Three loci namely, ABO, Rh and sickling were selected to measure the relative frequency of respective alleles in ten (10) endogamous populations inhabiting the Amravati District. The ABO locus was found to be less polymorphic when compared with other loci. On the other hand, Rh and sickling loci were found to be more polymorphic. Construction of a dendrogram using allele frequency data reveals an interesting relationship among the caste and tribe. An analysis shows three major clades comprising A, B and C. Clade A comprises Islamic Dawoodi Bohra and Hindu Gujrati. Clade B comprises the upper castes, Brahmin, Jain, Kashmiris and Kunbis, while Clade C shows Gonds and Katchhi. This study is a first attempt to provide a genetic landscape of castes and tribes inhabiting the Vidarbha region. The findings are discussed in light of the historical, anthropological and genetic data available for the studied group

    Random paths with curvature

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    We present some results coming from a Monte Carlo simulation of a set of random paths with a curvature dependent action. This model can be considered as a toy model of the theory of random surfaces. The transition from free to rigid random paths has been analyzed and the similitude with the crumpling transition have been pointed out.Comment: 4 pages, 5 Postscript figures, epsf.tex A postscript version is available at ftp://ftp.ifae.es/preprint/ft/uabft396.ps Poster presented in Lattice'96 conferenc

    Appearance of symmetry, beauty, and health in human faces

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    Symmetry is an important concept in biology, being related to mate selection strategies, health, and survival of species. In human faces, the relevance of left-right symmetry to attractiveness and health is not well understood. We compared the appearance of facial attractiveness, health, and symmetry in three separate experiments. Participants inspected front views of faces on the computer screen and judged them on a 5-point scale according to their attractiveness in Experiment 1, health in Experiment 2, and symmetry in Experiment 3. We found that symmetry and attractiveness were not strongly related in faces of women or men while health and symmetry were related. There was a significant difference between attractiveness and symmetry judgments but not between health and symmetry judgments. Moreover, there was a significant difference between attractiveness and health. Facial symmetry may be critical for the appearance of health but it does not seem to be critical for the appearance of attractiveness, not surprisingly perhaps because human faces together with the human brain have been shaped by adaptive evolution to be naturally asymmetrical

    Operating Islamic Jurisprudence in Non-Muslim Jurisdictions: Traditional Islamic Precepts and Contemporary Controversies in the United States

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    This is the final version of the article. Available from the Chicago-Kent College of Law via the URL in this record.With the recent public furor in the United States regarding “Shari‘a,” studies into the content of Islamic jurisprudence concerning Muslims living under non-Muslim jurisdiction are more pertinent than ever in the U.S. context. As “anti-Shari‘a” rhetoric has increased in fervency, informed input into the debates could go some way in correcting the peddled misconceptions. The paper begins by assessing how Muslim scholars viewed a Muslim’s travel to and residence in non-Muslim lands, and the obligation to abide by the laws of the land. It will focus on the jihad (siyar) section in Islamic jurisprudence and the section on judiciary (qaḍā’/adab al-qāḍī), and overlapping discussions of relevance pertaining to criminal law and financial law. The section on jihad assesses the issue of jurisdiction in terms of whether Islamic law can be applied to crimes committed in non-Muslim lands. A study of the section on judiciary will show how Islamic jurisprudence provides a means for Muslims to adjudicate among themselves in a non-Muslim polity. While much of the focus is on the Ḥanafī School of jurisprudence, comparisons will be made to other schools where possible, discerning areas of convergence and points of departure. Once this has been discovered, the actual intersection of Shari‘a and the American legal system will identify the fallacy of anti-Shari‘a propaganda. In doing so, I argue that a common sense approach is required that recognizes the accommodating principles in both legal traditions

    Monopole Percolation in pure gauge compact QED

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    The role of monopoles in quenched compact QED has been studied by measuring the cluster susceptibility and the order parameter nmax/ntotn_{max}/n_{tot} previously introduced by Hands and Wensley in the study of the percolation transition observed in non-compact QED. A correlation between these parameters and the energy (action) at the phase transition has been observed. We conclude that the order parameter nmax/ntotn_{max}/n_{tot} is a sensitive probe for studying the phase transition of pure gauge compact QED.Comment: LaTeX file + 4 PS figures, 12 pag., Pre-UAB-FT-308 ILL-(TH)-94-1

    Numerical simulation of random paths with a curvature dependent action

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    We study an ensemble of closed random paths, embedded in R^3, with a curvature dependent action. Previous analytical results indicate that there is no crumpling transition for any finite value of the curvature coupling. Nevertheless, in a high statistics numerical simulation, we observe two different regimes for the specific heat separated by a rather smooth structure. The analysis of this fact warns us about the difficulties in the interpretation of numerical results obtained in cases where theoretical results are absent and a high statistics simulation is unreachable. This may be the case of random surfaces.Comment: 9 pages, LaTeX, 4 eps figures. Final version to appear in Mod. Phys. Lett.
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