PCAC in Nuclear Medium and the Lovelace-Shapiro-Veneziano formula

A simple way to enforce the Adler zero condition for pion amplitudes in the nuclear medium is to use the Lovelace quantization condition but with modified Regge Slope $\alpha'$ This latter is related to change in the gluon condensate. Increasing nuclear density leads to a relative increase in the Regge Slope $\alpha'$ Denoting this increase by a scale factor $\lambda$, the drop in the $\rho$-mass, $\Delta-N$ mass difference, increase in $\pi\pi$ scattering length, decrease of pion decay constant etc. are simply related to $\lambda$.Comment: 11 pages LATE

A Calculation of Higgs Mass in the Standard Model

The assumption that the ratio of the Higgs self-coupling to the square of its yukawa coupling to the top is (almost) independent of the renormalization scale fixes the Higgs mass within narrow limits at m=160 GeV using only the values of gauge couplings and top mass.Comment: 6 pages, 3 figure

Distributions of Time- and Distance-Headways in the Nagel-Schreckenberg Model of Vehicular Traffic: Effects of Hindrances

In the Nagel-Schreckenberg model of vehicular traffic on single-lane highways vehicles are modelled as particles which hop forward from one site to another on a one dimensional lattice and the inter-particle interactions mimic the manner in which the real vehicles influence each other's motion. In this model the number of empty lattice sites in front of a particle is taken to be a measure of the corresponding distance-headway(DH). The time-headway(TH) is defined as the time interval between the departures (or arrivals) of two successive particles recorded by a detector placed at a fixed position on the model highway. We investigate the effects of spatial inhomogeneities of the highway (static hindrances) on the DH and TH distributions in the steady-state of this model.Comment: 21 pages LATEX, 5 postscript figures; European Physical Journal B, vol.5, 781 (1998

A state space forecasting model with fiscal and monetary control

In this paper we model the U.S. economy parsimoniously in an a theoretic state space representation. We use monthly data for thirteen macroeconomic variables. We treat the federal deficit as a proxy for fiscal policy and the fed funds rate as a proxy for monetary policy and use each of them as control (exogenous) variables, and designate the rest as state variables. The output (measured) variable is the growth rate of quarterly real GDP which we interpolate to obtain a monthly equivalent. We specify a linear relation between state variables and implicitly allow for time variation of the relationship by using a recursive least squares (RLS) with forgetting factor algorithm to estimate the coefficients. The model coefficients are also estimated using ordinary least squares (OLS) and the resulting forecasts (in-sample and out-of-sample) are compared. The RLS algorithm performs better in the out-of-sample forecasts, particularly for those state variables which exhibit the greatest cyclical variations. Variables which had greater stability were forecasted more precisely with OLS estimated parameters.Forecasting ; Econometric models

Higgs Mass in the Standard Model from Coupling Constant Reduction

Plausible interrelations between parameters of the standard model are studied. The empirical value of the top quark mass, when used in the renormalization group equations, suggests that the ratio of the colour SU(3) gauge coupling $g_3$, and the top coupling $g_t$ is independent of the renormalization scale. On the other hand, variety of top-condensate models suggest that the Higgs self-coupling $\lambda$ is proportional to $g_t^2$. Invoking the requirement that the ratio $\lambda(t)/g_t^2(t)$ is independent of the renormalization scale $t$, fixes the Higgs mass. The pole mass of the Higgs [which differs from the renormalization group mass by a few percent] is found to be $\sim 154$ GeV for the one-loop equations and $\sim 148$ GeV for the two-loop equations.Comment: 17 pages RevTeX including 7 figure

A Prospective Open Labelled Non Randomized Phase-II Clinical Trial of “Appalakara Chooranam” for Cegana Vatham (Cervical Spondylosis)

Cegana vatham is a most commonest degenerative disease now a day. Its amplified occurrence in recent times is due to stress, strain and abnormal dietary habits. This disease affects the neck and upper extremities with its signs and symptoms like that of cervical spondylosis. I had arrived at the diagnosis of the disease by using siddha parameters like envagaithervugal, kaalam, Thinai, Mukkutra Verupadugal and modern parameters. Appalakara chooranam is a siddha mineral formulation mentioned in Gunapadam Thathu Jeeva Vaguppu (Part II & III) (Page No: 368) which is indicated for vatha diseases. Therefore I desired to evaluate the efficacy of “Appalakara chooranam” in the treatment of Cegana vatham. For the purpose of standardization. clinical trial medicine was subjected to biochemical, anti-microbial and pharmacological analysis. Anti- inflammatory, analgesic, anti-ulcer activities were studied under pharmacological action. Safety profile of the trial drug was evaluated and no morbidity or mortality was noted in experimental animals. 20 OP and 20 IP patients of both sexes were selected and they were administered with the trial drug. At the end of the study majority of the cases which showed good clinical improvements. All the relevant reports were statistically analysed