Some New Light-cone Time Dependent Solutions in Deformed pp-wave Backgrounds

Brane solutions in time \ light-cone time dependent backgrounds are of interest in order to gain a deeper understanding of the physics associated with cosmological and null singularities. In this paper, we report both brane solutions and their bound states in light-cone time dependent pp wave-like backgrounds. We show that the backgrounds our solutions live in are all cosmologically singular (lightlike) at the classical level. A spacetime supersymmetry analysis of the backgrounds reveals that they retain 1/8 of the full type IIB supersymmetry

Management of International Capital Flows: The Indian Experience

In this paper we devise quantitative techniques to analyze the management of foreign capital flows in India over the past three decades. The paper argues that India's overall approach towards liberalization of the capital account can be characterized as gradualist and calibrated, whereby certain agents and flows have been accorded priority in the liberalization process, from the viewpoint of ensuring financial stability. A cross country analysis indicates that the calibrated approach has resulted in India being ranked towards the lower end of the spectrum in terms of capital account openness. We analyze the extant regulations governing different types of foreign capital flow, and highlight the evolution of various types of capital flows over the recent period. To evaluate Indian macroeconomic management in the face of capital flows, we quantify the various policy options under the classic problem of "impossible trinity". We find that India, like other emerging markets, has also been confronted with the various alternatives under "impossible trinity" and has chosen to adopt an intermediate regime, juggling the objectives of monetary independence, exchange rate stability, and an open capital account as per the needs of the economy.Capital Flows; Impossible Trinity; Macroeconomic Management

Does Capital Account Openness Lower Inflation?

This paper investigates the relationship between capital account openness and inflation since the 1980s. It argues that widespread capital account liberalization during the last two decades appears to have contributed to the worldwide disinflation observed during the same period. The paper builds a theoretical model to motivate the presence of a negative link between financial integration and inflation. It tests the prediction of the theoretical model by employing static and dynamic panel data procedures. Financial integration appears to discipline monetary authorities, or to help them convince the private sector that they will be more disciplined in the future.capital account openness, inflation, Seignorage, Discipline Effect

Ads(3)/CFT(2) to Ads(2)/CFT(1)

It has been suggested that the quantum generalization of the Wald entropy for an extremal black hole is the logarithm of the ground state degeneracy of a dual quantum mechanics in a fixed charge sector. We test this proposal for supersymmetric extremal BTZ black holes for which there is an independent definition of the quantum entropy as the logarithm of the degeneracy of appropriate states in the dual 1+1 dimensional superconformal field theory. We find that the two proposals agree. This analysis also suggests a possible route to deriving the OSV conjecture.Comment: LaTeX file, 14 pages; v2: references added; v3: comments and refernces added; v4: expanded discussion on the role of cut-of

Glassy Aging with Modified Kohlrausch-Williams-Watts Form

In this report we address the question whether aging in the non equilibrium glassy state is controlled by the equilibrium alpha-relaxation process which occur at temperatures above Tg. Recently Lunkenheimer et. al. [Phys. Rev. Lett. 95, 055702 (2005)] proposed a model for the glassy aging data of dielectric relaxation using a modified Kohlrausch-Williams-Watts (KWW) form. The aging time dependence of the relaxation time is defined by these authors through a functional relation involving the corresponding frequency but the stretching exponent is same as the alpha-relaxation stretching exponent. We present here an alternative functional form directly involving the relaxation time itself. The proposed model fits the data of Lunkenheimer et. al. perfectly with a stretching exponent different from the alpha-relaxation stretching exponent.Comment: 1 TeX file, 10 eps figure