Comment on "Neutron Interferometric Observation of Noncyclic Phase"

A critique of a recent experiment [Wagh et.al., Phys.Rev.Lett.81, 1992 (7 Sep 1998)] to measure the noncyclic phase associated with a precessing neutron spin in a neutron interferometer, as given by the Pancharatnam criterion, is presented. It is pointed out that since the experiment measures, not the noncyclic phase itself, but a quantity derived from it, it misses the most interesting feature of such a phase, namely the different sign associated with states lying in the upper and the lower hemispheres, a feature originating in the existence of a phase singularity. Such effects have earlier been predicted and seen in optical interference experiments using polarization of light as the spinor [Bhandari, Phys.Rep.281, 1 (Mar 1997)].Comment: 5 pages, 0 figures, submitted to Phys.Rev.Let

On Geometric Phase from Pure Projections

The geometric phase is usually treated as a quantity modulo 2\pi, a convention carried over from early work on the subject. The results of a series of optical interference experiments involving polarization of light, done by the present author (reviewed in R.Bhandari, Phys. Rep. 281 (1997) p.1) question the usefulness of such a definition of the geometric phase in that it throws away useful and measurable information about the system, for example strengths of singularities giving rise to the geometric phase. Such singularities have been directly demonstrated by phase-shift measurement in interference experiments. In this paper, two recent polarization experiments (Hariharan et.al., J.Mod.Opt. 44 (1997)p.707 and Berry and Klein, J.Mod.Opt. 43 (1996)p.165) are analysed and compared with previous experiments and potentially detectible singularities in these experiments pointed out.Comment: Latex, 15 pages, 6 figures; ([email protected]

Would Spain Also Restrict Imports to Save Jobs? Why Not Try Trade Equilibrium Instead?

Chinese tires, subsidized by its government, are much cheaper than their American counterparts. As a result several American tire plants have been closed and thousands of Americans have lost their jobs. In light of these setbacks, President Obama levied an extra 35% tax on these imports in September 2009. The purpose of this article is to research which other country, if any, may also follow the U.S. strategy; and why using the theory of Trade Equilibrium would be a better approach instea

Trade Equilibrium, Jobs, & Stimulus

As long as the U.S. continues to have huge trade deficits, the American jobs would continue to be off-shored and no net new jobs can be created. Spending billions of American stimulus dollars would end up stimulating foreign economies. It would be like taking wealth from the American workers and giving it to their foreign counterpart. Traditional techniques such as tax cuts for the rich (fiscal policies), lower interest rates (monetary policies), and “buy American” (patriotic appeals) have failed to solve the problems. In order to spur its economy and jobs, the U.S. “must” adopt, as its “mission,” bringing parity between its imports and exports. Secondly, it must help its trading partners understand the benefits of using their surplus American dollars to buy American products. The “Trade Equilibrium” so established would help multiply trade between countries, increase corporate profits, and create jobs

Democracy of Pressure Groups

· The report contains positive references to profit, capital, liberty and freedom (including free-market economy), and the struggle of the world’s poor in the developing world – if we dared, and cared to ask them, that is, to achieve these. These references might be too sacrilegious to be tasteful to some. · The report attempts to show the weaknesses of the activism of the pressure groups, and how empty their rhetoric is. This is of course apart from their unethical conduct in trying to force their views on others. The report refutes comments made against businesses, globalization, privatization, and trade deregulation. At the same time, the need of government in providing property rights is emphasized. · Hope this report will leave a feeling that the biggest reason for differences between the prosperity of a rich and a poor country is neither racial nor cultural, but the system of law and order, property rights, and freedom of action in private, economic and social lives; which work as catalysts to prosperity, growth and the fight against poverty .liberty, council of canadians, canada, trade, free, NAFTA, WTO, Exxon