Astronomers are using aspects of the fundamentals gleaned by the study of the dynamics of superfluids to help understand what happens inside the intensely hot, collapsed, neutron stars that spin and radiate as pulsars. Current research, focusing on the puzzling behavior of helium in its superfluid state, is discussed. (JN)

Gives an analogy useful for explaining the experimental teleportation of a quantum-mechanical state to beginning physics students. (WRM)

Describes the wit, spirit, and inventiveness of Wolfgang Pauli and his relationship with physicists of his time. Reviews Pauli's contributions in the fields of relativity and quantum theory. (GS)

Shows how Maxwell's equations can be obtained by starting with a relatively simple pseudoscalar and scalar potential employing only the Lorentz transformation for a four vector (or pseudovector). (GA)

A Hamiltonian for the time-dependent damped and forced harmonic oscillator is derived. A simple time-dependent linear canonical transformation transforms the Hamiltonian to one whose solution is readily obtained. The wave function for the corresponding quantum mechanical problem is given. (Author/GA)

Discusses the nature of Laplace transform techniques and explains an alternative to them: the Widder's real inversion. To illustrate the power of this new technique, it is applied to a difficult inversion: the problem of Landau damping. (GA)

Explains how the spherical pendulum could be used to observe nonreentrant orbits, and shows, using theoretical analysis, that for small displacements the elliptical orbit will precess at a rate proportional to its area. (GA)

Shows how to extend Wigner distribution functions, and Weyl correspondence between quantum and classical variables, from the usual kind of canonically conjugate position and momentum operators to the case of an angle and angular momentum operator pair. (Author/GA)

Explains that the quantal state describes a statistical ensemble of similar systems identically prepared, and is not to be identified with any single system. Shows how to determine empirically the general quantum state by calculations involving only the measured mean values of a set of observables called a "Quorum." (Author/GA)

Medical educators debate which models of scientific research should be applied to problems in academic medicine. The reigning model was derived from the first scientific revolution of Newtonian physics. The emerging model is grounded in the second scientific revolution of Einstein's quantum physics. (Author/MSE)

Studies the relationship between Eulerian and Lagrangian coordinate systems with the help of computer plots of variables such as density and particle displacement. Gives examples which illustrate the differences in the shape of a traveling wave as seen by observers in the two systems. (Author/GA)

Cosmology is the theory by which the structure and history of the universe is described. Discusses the relationship between cosmology, gravity, and quantum mechanics, and whether the relationship can be formulated through Einstein's theory or a modification of it. Also discusses progress made in these scientific areas. (JN)

Derives an explicit representation of the permutation operator in terms of coordinate and momentum operators. (Author/GA)

Traces the development of quantum field theory over the last 50 years beginning with the research of Paul Dirac. Includes past and current research endeavors of various scientists. (JN)

Points out that quantum mechanics interpretations, using Heisenberg's Uncertainty Relations for the position and momentum of an electron, have their drawbacks. The interpretations are limited to the Schrodinger theory and fail to take into account either spin or relativity. Shows why spin cannot be ignored. (Author/GA)