Book Review: Dharma of the Twenty-first Century: Theological-Ethical Paradigm Shift

A review of Dharma of the Twenty-first Century: Theological-Ethical Paradigm Shift by Somen Das

At the Crossroads of the Wittgenstein and Autobiography Highways

Book review of: Immler, Nicole L., Das Familiengedächtnis der Wittgensteins. Zu verführerischen Lesarten von (auto-)biographischen Texten. Edition Kulturwissenschaft Band 12. Bielefeld: Transcript, 2011. 395 p

WTO Dispute Settlement at Ten: Evolution, Experiences, and Evaluation

ENGLISH ABSTRACT: On 1 January 1995, the Understanding on Rules and Procedures Governing the Settlement of Disputes (DSU) entered into force. During its first ten years, the DSU has since been applied to 324 complaints – more cases than dispute settlement under the GATT 1947 had dealt with in nearly five decades. The system is perceived, both by practitioners and in academic literature, to work generally well. However, it has also revealed some flaws. Negotiations to review and reform the DSU have been taking place since 1997 (“DSU review”), however, without yielding any result so far. In the meantime, WTO Members and adjudicating bodies managed to develop the system further through evolving practice. While this approach may remedy some practical shortcomings of the DSU text, the more profound imbalance between relatively efficient judicial decisionmaking in the WTO (as incorporated in the DSU) and nearly blocked political decisionmaking evolves into a serious challenge to the sustainability of the system. This article provides an overview of the first ten years of DSU practice, the on- going DSU review negotiations, and the challenges to the dispute settlement system. GERMAN ABSTRACT: Am 1. Januar 1995 trat das Übereinkommen über Regeln und Verfahren für die Streitschlichtung (Dispute Settlement Understanding; DSU) als Teil des WTO-Abkommens in Kraft. In den ersten zehn Jahren seines Bestehens fand das DSU auf 324 Klagebegehren Anwendung – mehr Fälle, als unter den Streitschlichtungsregeln des GATT 1947 in dessen nahezu fünfzigjähriger Geschichte behandelt wurden. Die Funktionsweise des Systems wird sowohl in der handelspolitischen Praxis als auch in der wissenschaftlichen Literatur als gut eingestuft. Gleichwohl hat der Mechanismus in seiner Anwendung auch einige Schwächen offenbart. Diese sollen auf dem Verhandlungswege („DSU Review“) behoben werden, doch blieben die seit Ende 1997 laufenden Gespräche bislang erfolglos. Zugleich ist es den Mitgliedstaaten und den Spruchorganen aber stellenweise gelungen, das System im Rahmen der praktischen Anwendung fortzuentwickeln. Während auf diesem Weg einige praktische Probleme des Verfahrenstextes behoben werden konnten, dürfte das beträchtliche Ungleichgewicht in der WTO zwischen einem vergleichsweise effizienten juristischen Entscheidungsmechanismus (in Form des DSU) und den häufig blockierten politischen Entscheidungsmechanismen fortbestehen. Dieses Ungleichgewicht bedroht die Systemnachhaltigkeit. Der vorliegende Artikel gibt einen Überblick über die ersten zehn Jahre DSU-Praxis, die laufenden DSU-Review-Verhandlungen sowie einen Ausblick auf zukünftige Herausforderungen.WTO, Dispute Settlement, DSU Review Negotiations

Zero temperature dynamics of Ising model on a densely connected small world network

The zero temperature quenching dynamics of the ferromagnetic Ising model on a densely connected small world network is studied where long range bonds are added randomly with a finite probability $p$. We find that in contrast to the sparsely connected networks and random graph, there is no freezing and an initial random configuration of the spins reaches the equilibrium configuration within a very few Monte Carlo time steps in the thermodynamic limit for any $p \ne 0$. The residual energy and the number of spins flipped at any time shows an exponential relaxation to equilibrium. The persistence probability is also studied and it shows a saturation within a few time steps, the saturation value being 0.5 in the thermodynamic limit. These results are explained in the light of the topological properties of the network which is highly clustered and has a novel small world behaviour.Comment: Replaced by accepted version in Eur. Phys. J

Datta-Das transistor: Significance of channel direction, size-dependence of source contacts, and boundary effects

We analyze the spin expectation values for injected spin-polarized electrons (spin vectors) in a [001]-grown Rashba-Dresselhaus two-dimensional electron gas (2DEG). We generalize the calculation for point spin injection in semi-infinite 2DEGs to finite-size spin injection in bounded 2DEGs. Using the obtained spin vector formula, significance of the channel direction for the Datta-Das transistor is illustrated. Numerical results indicate that the influence due to the finite-size injection is moderate, while the channel boundary reflection may bring unexpected changes. Both effects are concluded to decrease when the spin-orbit coupling strength is strong. Hence [110] is a robust channel direction and is therefore the best candidate for the design of the Datta-Das transistor.Comment: 5 pages, 4 figures, accepted for publication in Physical Review

Jain States in a Matrix Theory of the Quantum Hall Effect

The U(N) Maxwell-Chern-Simons matrix gauge theory is proposed as an extension of Susskind's noncommutative approach. The theory describes D0-branes, nonrelativistic particles with matrix coordinates and gauge symmetry, that realize a matrix generalization of the quantum Hall effect. Matrix ground states obtained by suitable projections of higher Landau levels are found to be in one-to-one correspondence with the expected Laughlin and Jain hierarchical states. The Jain composite-fermion construction follows by gauge invariance via the Gauss law constraint. In the limit of commuting, ``normal'' matrices the theory reduces to eigenvalue coordinates that describe realistic electrons with Calogero interaction. The Maxwell-Chern-Simons matrix theory improves earlier noncommutative approaches and could provide another effective theory of the fractional Hall effect.Comment: 35 pages, 3 figure