1,293 research outputs found

    James R. Taylor et Elizabeth J. Van Every. The Vulnerable Fortress -Bureaucratic Organization and Management in the Information Age, 1993

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    Banerjee Indrajit. James R. Taylor et Elizabeth J. Van Every. The Vulnerable Fortress -Bureaucratic Organization and Management in the Information Age, 1993. In: Communication. Information Médias Théories, volume 16 n°2, décembre 1995. pp. 231-234

    Weak universality induced by Q = ± 2e charges at the deconfinement transition of a (2+1)-dimensional U(1) lattice gauge theory

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    Matter-free lattice gauge theories (LGTs) provide an ideal setting to understand confinement to deconfinement transitions at finite temperatures, which is typically due to the spontaneous breakdown (at large temperatures) of the center symmetry associated with the gauge group. Close to the transition, the relevant degrees of freedom (Polyakov loop) transform under these center symmetries, and the effective theory depends on only the Polyakov loop and its fluctuations. As shown first by Svetitsky and Yaffe, and subsequently verified numerically, for the U(1) LGT in (2 þ 1) dimensions, the transition is in the 2D XY universality class, while for the Z2 LGT, it is in the 2D Ising universality class. We extend this classic scenario by adding higher charged matter fields and show that the critical exponents γ and ν can change continuously as a coupling is varied, while their ratio is fixed to the 2D Ising value. While such weak universality is well known for spin models, we demonstrate this for LGTs for the first time. Using an efficient cluster algorithm, we show that the finite temperature phase transition of the U(1) quantum link LGT in the spin S ¼ 12 representation is in the 2D XY universality class, as expected. On the addition of Q ¼ ±2e charges distributed thermally, we demonstrate the occurrence of weak universality

    Sublattice scars and beyond in two-dimensional U(1)U(1) quantum link lattice gauge theories

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    In this article, we elucidate the structure and properties of a class of anomalous high-energy states of matter-free U(1)U(1) quantum link gauge theory Hamiltonians using numerical and analytical methods. Such anomalous states, known as quantum many-body scars in the literature, have generated a lot of interest due to their athermal nature. Our starting Hamiltonian is H=Okin+λOpotH = \mathcal{O}_{\mathrm{kin}} + \lambda \mathcal{O}_{\mathrm{pot}}, where λ\lambda is a real-valued coupling, and Okin\mathcal{O}_{\mathrm{kin}} (Opot\mathcal{O}_{\mathrm{pot}}) are summed local diagonal (off-diagonal) operators in the electric flux basis acting on the elementary plaquette \square. The spectrum of the model in its spin-12\frac{1}{2} representation on Lx×LyL_x \times L_y lattices reveal the existence of sublattice scars, ψs|\psi_s \rangle, which satisfy Opot,ψs=ψs\mathcal{O}_{\mathrm{pot},\square} |\psi_s\rangle = |\psi_s\rangle for all elementary plaquettes on one sublattice and Opot,ψs=0 \mathcal{O}_{\mathrm{pot},\square} | \psi_s \rangle =0 on the other, while being simultaneous zero modes or nonzero integer-valued eigenstates of Okin\mathcal{O}_{\mathrm{kin}}. We demonstrate a ``triangle relation'' connecting the sublattice scars with nonzero integer eigenvalues of Okin \mathcal{O}_{\mathrm{kin}} to particular sublattice scars with Okin=0\mathcal{O}_{\mathrm{kin}} = 0 eigenvalues. A fraction of the sublattice scars have a simple description in terms of emergent short singlets, on which we place analytic bounds. We further construct a long-ranged parent Hamiltonian for which all sublattice scars in the null space of Okin \mathcal{O}_{\mathrm{kin}} become unique ground states and elucidate some of the properties of its spectrum. In particular, zero energy states of this parent Hamiltonian turn out to be exact scars of another U(1)U(1) quantum link model with a staggered short-ranged diagonal term.Comment: 18 pages, 10 figure

    A Stacked Segmented Adaptive Power Amplifier in 22nm FD-SOI

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    This work was supported by Soitec. (Corresponding author: Aritra Banerjee.

    Author Exchange

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    Anthropologist Mukulika Banerjee and political scientist Sushmita Pati have a conversation about their recently published books set in rural Bengal and Delhi’s urban villages, respectively. They situate their analyses of the intersections between democracy, capitalism, urbanization, and globalization in events, relations, and cultures of the everyday. Their exchange offers important insights for how political subjectivities and social ties are differently constituted or, to use Banerjee’s term, “cultivated” in these two settings. The two books offer a fine-grained view of how active citizenship in rural and urban India is refracted through distinct social and institutional structures. India is home to some of the world’s largest cities while more than 900 million people continue to live in the countryside. Its democratic future is therefore inextricably tied to the evolution of political behavior and political economy in both contexts, and, as Banerjee and Pati’s joint response indicates, to how urban and rural dynamics shape each other through (but not only through) migrants and their networks. Contents: Review of Mukulika Banerjee’s \u27Cultivating Democracy: Politics and Citizenship in Agrarian India\u27 by Sushmita Pati Response from Mukulika Banerjee Review of Sushmita Pati’s \u27Properties of Rent: Community, Capital and Politics in Globalising Delhi\u27 by Mukulika Banerjee Response from Sushmita Pati Joint Commentary from Banerjee and Pat

    On some topology generated by I\mathcal{I}-density function

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    In this paper we have studied on I\mathcal{I}-density function using the notion of I\mathcal{I}-density, introduced by Banerjee and Debnath \cite{banerjee 4} where I\mathcal{I} is an ideal of subsets of the set of natural numbers. We have explored certain properties of I\mathcal{I}-density function and induced a topology using this function in the space of reals namely I\mathcal{I}-density topology and we have given a characterization of the Lebesgue measurable subsets of reals in terms of Borel sets in I\mathcal{I}-density topology.Comment: 12 pages. arXiv admin note: text overlap with arXiv:2205.0337

    Rhetoric and Reality. The Internet Challenge for Democracy in Asia

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    Review of Rhetoric and Reality. The Internet Challenge for Democracy in Asia / Indrajit Banerjee (ed.). Rhetoric and Reality. Singapore: Eastern Universities Press, 200

    The Politics of Radio in India

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    Banerjee_QSurvey_RawDataSet_PPC

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    Raw dataset for questionnaire survey study (kinesiology taping_cancer care continuum)Author: Gourav Banerjee et alJournal: Progress in Palliative Care</div

    FEMININE VISIBILITY IN A MYTHOLOGICAL CONTEXT OF CHITRA BANERJEE DIVAKARUNI’S THE PALACE OF ILLUSIONS

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    Chitra Banerjee Divakaruni an Indo-American author, works as a professor of English in the University of Houston. She is also a co-founder and former president of a helpline for South Asian women. She involves herself eagerly as a volunteer at women’s center at Berkeley and assists battered women through the organization. MAITRI, the organization was begun in 1991 by her with the help of a group of friends. Chitra Banerjee Divakaruni an expatriate writer, pictures Indian womanhood how they are treated by men in their lives. An explicit attempt to retell the epic in novel form is Chitra Banerjee Divakaruni’s The Palace of Illusions which will be analyzed in the following. The present paper analyzes how women is treated by male as a lifeless thing in the novel. This study is an attempt to illustrate how revisionist mythmaking is a feminist endeavor to revalue the experiences of women in patriarchy and redefine women from feminist perspectives. &nbsp
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