16,248 research outputs found
Global Analytic Solutions for the Nonlinear Schr\"odinger Equation
We prove the existence of global analytic solutions to the nonlinear
Schr\"odinger equation in one dimension for a certain type of analytic initial
data in .Comment: Corrected errors in proofs in section
A Remark on Unconditional Uniqueness in the Chern-Simons-Higgs Model
The solution of the Chern-Simons-Higgs model in Lorenz gauge with data for
the potential in and for the Higgs field in is
shown to be unique in the natural space for , where corresponds to finite energy. Huh and Oh
recently proved local well-posedness for , but uniqueness was obtained
only in a proper subspace of Bourgain type. We prove that any solution in
must in fact belong to the space
, hence it is the unique solution obtained by Huh and Oh
Glass-ionomer Adhesives in Orthodontics: Clinical Implications and Future Research Directions
During the past ten years significant advances have been made in the development of glass-ionomer bonding adhesives. The beneficial effects of fluoride are well documented and an agent which reduces or prevents a white spot lesion that commonly occurs clinically, is desirable. There has been a notable lack of randomized clinical trials to determine the prevalence of white spot lesions after orthodontic treatment although it is often reported in the literature. White spot lesions pose health and esthetic problems and their proper clinical management has yet to be resolved. The objective of this paper Is to review the literature in this area and suggest a rationale for a clinical trial to assess the efficiency of glass-ionomer adhesives in facing the problem of decalcification and study the bond strength of these materials
Ergodic Transport Theory and Piecewise Analytic Subactions for Analytic Dynamics
We consider a piecewise analytic real expanding map of
degree which preserves orientation, and a real analytic positive potential
. We assume the map and the potential have a complex
analytic extension to a neighborhood of the interval in the complex plane. We
also assume is well defined for this extension.
It is known in Complex Dynamics that under the above hypothesis, for the
given potential , where is a real constant, there
exists a real analytic eigenfunction defined on (with a
complex analytic extension) for the Ruelle operator of .
Under some assumptions we show that
converges and is a piecewise analytic calibrated subaction. Our theory can be
applied when . In that case we relate the involution
kernel to the so called scaling function.Comment: 6 figure
Fluctuation Dynamics in US Interest Rates and the Role of Monetary Policy
This paper presents empirical evidence suggesting that the degree of long-range dependence in interest rates depends on the conduct of monetary policy. We study the term structure of interest rates for the US and find evidence that global Hurst exponents change dramatically according to Chairman Tenure in the Federal Reserve Board and also with changes in the conduct of monetary policy. In the period from 1960's until the monetarist experiment in the beginning of the 1980's interest rates had a significant long-range dependence behavior. However, in the recent period, in the second part of the Volcker tenure and in the Greenspan tenure, interest rates do not present long-range dependence behavior. These empirical findings cast some light on the origins of long-range dependence behavior in financial assets.
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