Showing papers in "Physics Reports in 1989"

TL;DR: In this article, the method of calculating radiative corrections to the scalar potentials is reviewed, with an emphasis on renormalization group improvement of the potential, and the results are then applied to the standard model to derive stringent bounds on Higgs and fermion passes.

TL;DR: In this paper, the authors survey the low-energy phenomenological implications of superstring-inspired E 6 models and present experimental limits on these particles from both accelerator and non-accelerator data.

TL;DR: In this article, a review of results of the so-called Painleve singularity approach to the investigation of the integrability of dynamical systems with finite and infinite number of degrees of freedom is presented.

TL;DR: In this paper, a list of published photoluminescence transitions indicating their key properties is presented. And the relationship between the excited states of some optical centres and the band states of the silicon host lattice is discussed.

TL;DR: In this paper, the hydrogen atom in a uniform magnetic field is discussed as a real and physical example of a simple nonintegrable system and the quantum mechanical spectrum shows a region of approximate separability which breaks down as we approach the classical escape threshold.

TL;DR: In this article, the existence criteria for electrostatic double layers (DLs) are discussed, and the results of theoretical, simulation and observational investigations of magnetospheric DLs are presented.

TL;DR: A review on the theory of exactly solvable models in statistical mechanics and its application to knot theory can be found in this paper, where the Yang-Baxter relation is introduced for scattering matrices in (1 + 1)-dimensional field theory and for Boltzmann weights of vertex models and IRF models in two-dimensional statistical mechanics.

TL;DR: In this article, the degenerate Anderson model is used to obtain exact results for magnetic impurities in simple metals, in particular in the presence of mechanisms lifting the degeneracy of the f-level, e.g. crystalline fields, spin-orbit coupling and the magnetic field.

TL;DR: In this article, the authors present an account of string field theory which aims to introduce the reader to the important concepts of the subjects as well as to aid access to the literature.

TL;DR: In this paper, the present status of formulating classical and quantum kinetic equations for relativistic plasmas with Abelian and non-Abelian interactions is reviewed and discussed.

TL;DR: In this paper, the formalism of sum rules is developed and employed to investigate various giant resonances in nuclei and the role of surface effects which are shown to play a crucial role in the propagation of isoscalar as well as isovector collective modes.

TL;DR: In this paper, an exact nonperturbative proper-time representation of the full effective action for a chiral fermion is derived, and its relationship to the Wess-Zumino term and Goldstone-Wilczek current discussed.

TL;DR: In this paper, the authors present a pedagogical introduction to the construction and properties of self-dual lattices, indicating generalizations whenever possible, including the relation between exceptional algebras and space-time supersymmetry in string theory.

TL;DR: In this paper, the authors review recent work on the spherical gravitational collapse of a perfect fluid with heat flow but without viscosity, and present several detailed model of stars undergoing this type of collapse.

TL;DR: In this article, the authors review the stochastic interpretation of the quantum theory and show that, like the causal interpretation, it necessarily involves non-locality and propose a co-consistent treatment of nonlocality.

TL;DR: In this paper, a total of nearly 20 million J/Ψ decays have been analysed by various experiments that have operated at the J/ε energy in e+e− storage rings.

TL;DR: Monographie consacree au chauffage du plasma ionospherique, a haute latitude par des ondes radio a high puissance and, plus particulierement, au role joue par l'absorption anormale de l'onde radio as mentioned in this paper.

TL;DR: In this article, a series of shell model calculations of the energy spectrum of the p-shell Σ hypernuclei were performed to understand the data on the interactions of the Σ with nucleons (N) and nuclei in a consistent framework.

TL;DR: In this article, it was shown that the interaction of high intensity light with an expanding plasma surface produces a positive plasma cloud followed by a negative plasma cloud, which is the result of the nonlinear ponderomotive force.

TL;DR: In this article, the authors review the approach to dispersion forces based on dispersion theory and give a general discussion of the concept of potential in quantum field theory and then show how a study of two-photon exchange amplitudes leads to a model-independent derivation and generalization of the formulas describing dispersion force for the case of two neutral atoms, first obtained by Casimir and Polder.

TL;DR: In this paper, a review of the application of algebraic-theoretical methods to the problem of constructing exact solutions of the many-dimensional nonlinear systems of partial differential equations for spinor, vector and scalar fields widely used in quantum field theory is devoted.

TL;DR: In this paper, the non-linear σ-model for pions is extended to incorporate ϱ and ω-mesons as massive gauge bosons in a nonlinear realization of chiral symmetry.

TL;DR: A survey of recent advances in the theoretical study of (e,2e) reactions is given in this paper, where the most detailed information presently available about the ionization of atoms by electron impact is obtained by analyzing triple differential cross sections, measured in (e 2e) experiments.

TL;DR: In this article, a general density matrix theory is presented to describe elastic and inelastic electron and position scattering as well as photo-and particle impact ionization, where the initial density matrix characterizes the preparation of the colliding beams (for example, their spin polarization), reduced density matrices are defined to treat individual experiments where either the projectile or the target are observed alone or both are detected in coincidence.

TL;DR: A review of the present-day knowledge of the electron-phonon drag effects and their role in transport phenomena is presented in this paper, which describes approaches, based on the Boltzmann kinetic equation, to the study of interacting subsystems of electrons and acoustic and optical phonons in semiconductors characterized by an arbitrary degree of degeneracy of the charge-carrier gas and non-equilibrium of electrons in the energy-momentum space.

TL;DR: In this paper, the authors present results on rapid adiabatic passage processes which move the molecules up and down the energy ladder, the latter due to stimulated emission, and experimentally, stimulated emission is observed by opto-thermal detection of a molecular beam where deexcitation by stimulated emission leads to negative signals as compared to straightforward excitation processes.

TL;DR: In this article, the theoretical and experimental methods involved in the interferometric detection of gravitational waves are reviewed and an attempt of historical analysis is given, together with the types of noise competing with the gravitational wave signal.

TL;DR: In this paper, the authors examine several abstract models of reaction-diffusion systems where fluctuations play a principal role and determine the behavior of a system on macroscopic scales, including systems with explosive instabilities, saturated logistic growth, annihilation or recombination reactions, and competitive interactions.

TL;DR: In this paper, the meson-exchange current operators are derived in the soft-pion limit and further extended at high momentum transfer via an effective model Lagrangian, and contributions of meson exchange currents in heavy nuclei are discussed, and connections with the present relativistic description of nuclear systems are given.