Description of self-synchronization effects in distributed Josephson junction arrays using harmonic analysis and power balance

Power generation and synchronisation in Josephson junction arrays have attracted attention for a long time. This stems from fundamental interest in nonlinear coupled systems as well as from potential in practical applications. In this paper we study the case of an array of junctions coupled to a distributed transmission line either driven by an external microwave or in a self-oscillating mode. We simplify the theoretical treatment in terms of harmonic analysis and power balance. We apply the model to explain the large operation margins of SNS- and SINIS-junction arrays. We show the validity of the approach by comparing with experiments and simulations with self-oscillating es-SIS junction arrays.Comment: 5 pages, 3 figure

Can competition among local governments constrain government spending?

An examination of the relationship between the number of local governmental units and the share of personal income going to local government expenditures, considering competition among both general-purpose and single-purpose government units.Expenditures, Public ; Municipal finance

Wagner's hypothesis: a local perspective

Wagner's hypothesis of an expanding public sector as an economy develops is tested using pooled time-series cross-sectional data for U.S. states from 1964 to 1986. Comparing government size among fiscal jurisdictions within a single nation reduces the problems of data comparability and of controlling for cultural and institutional differences that plague the more common international tests of this theory. Our results are inconsistent with Wagner's hypothesis, yielding a negative relationship between public-sector size and output. However, some empirical support is found in the protective services and public welfare components of government activity.Expenditures, Public

Structure, conduct, and performance in the local public sector

An examination of the relationship between the number of local governments within local labor markets and their expenditures, finding empirical support in both suburbs and central cities for the connection between the structure of the local public service market and its performance.Local government ; Competition

On the theoretical uncertainties in the muon anomalous magnetic moment

I present a fairly detailed discussion of various contributions to the anomalous magnetic moment of the muon a_mu. I try to give an unbiased evaluation of the validity of the SM prediction for this quantity and to point out some delicate issues involved in its calculation. I conclude that the theory uncertainties in the SM prediction for the muon anomalous magnetic moment are underestimated and a great deal of work will be required to reduce these uncertainties to the level required by experiment.Comment: 12 pages, revte

Two photon decay of the pseudoscalars, the chiral symmetry breaking corrections

The extrapolation of the decay amplitudes of the pseudoscalar mesons into two photons from the soft meson limit where it is obtained from the axial-anomaly to the mass shell involves the contribution of the 0^ - continuum. These chiral symmetry breaking corrections turn out to be large. The effects of these corrections on the calculated pi ^0 decay rate, on the values of the singlet-octet mixing angle and on the ratios f_8 / f_pi and f_0 / f_pi are discussed. The implications for the transition form factors gamma gamma* --> pseudoscalars are also evaluated and confronted with the available experimental data.Comment: Computational errors straightened and study of the implications on the form factors of the transitions gamma gamma* --> pseudoscalars adde

On the NLO Power Correction to Photon-Pion Transition Form Factor

We propose a perturbative evaluation for the next-to-leading-order (NLO) $O(1/Q^4)$ power correction to the photon-pion transition form factor. The effects of the NLO power correction are analyzed.Comment: 4 pages, 3 figures, Revtex, revised versio