output
19912026
Showing 1997Show all

68 papers · 1 filter

astro-ph1997★ 41 cited

Cluster Radio Relics as a Tracer of Shock Waves of the Large-Scale Structure Formation

Torsten A. Ensslin, Peter L. Biermann, Ulrich Klein +1

We present evidence for the existence of shock waves caused by the formation of the large-scale structure. In some clusters of galaxies peripherally located sources of extended dif…

nucl-th1997★ 9 cited

K0-Sigma+ Photoproduction with SAPHIR

C. Bennhold

Preliminary results of the analysis of the reaction p(gamma,K0)Sigma+ are presented. We show the first measurement of the differential cross section and much improved data for the…

nucl-th1997★ 14 cited

Photodisintegration of the triton with realistic potentials

W. Schadow, W. Sandhas

The process is treated by means of three-body integral equations employing in their kernel the W-Matrix representation of the subsystem amplitudes. As compared to…

nucl-th1997★ 12 cited

Photodisintegration of three- and four- nucleon systems

W. Sandhas, W. Schadow, G. Ellerkmann +2

Three- and four-nucleon photodisintegration processes are quite efficiently treated by means of effective two-body integral equations in momentum space. We recall some aspects of t…

nucl-th1997★ 5 cited

Triple collisions (e+p+Be7) in solar plasma

D. E. Monakhov, V. B. Belyaev, S. A. Sofianos +2

Several nuclear reactions involving the Be7 nucleus, not included into the standard model of the pp-chain, are discussed. A qualitative analysis of their possible influence on the…

nucl-th1997★ 8 cited

Triton photodisintegration with realistic potentials

W. Schadow, W. Sandhas

The photodisintegration of H is treated by means of coupled integral equations using separable versions of the Paris and the Bonn potentials in their kernel. The differential…

nucl-th1997★ 2 cited

Hadron Polarizabilities and Form Factors

D. Drechsel, J. Becker, A. Z. Dubnickova +17

This is the summary of the working group on Hadron Polarizabilities and Form Factors of the Chiral Dynamics Workshop in Mainz, September 1-5, 1997.

hep-ph1997

Quark Structure of Light Mesons

Bernard Metsch

On the basis of the Bethe-Salpeter Equation we developed a covariant constituent quark model, with confinement implemented by a linear potential and an instanton induced interactio…

hep-ph1997★ 4 cited

A Relativistic Quark Model for Baryons

Bernard Metsch

We present a relativistic quark model for baryons, based on the Bethe-Salpeter equation in instantaneous approximation. Confinement is implemented by an interaction kernel which es…

hep-ph1997★ 19 cited

A polarised QCD condensate: nu p elastic scattering as a probe of U_A(1) dynamics

S. D. Bass

U_A(1) dynamics have the potential to induce a polarised condensate inside a nucleon. The formation of this condensate is related to the realisation of U_A(1) symmetry breaking by…

cond-mat.supr-con1997★ 339 cited

Phases of the one-dimensional Bose-Hubbard model

Till D. Kuehner, H. Monien

The zero-temperature phase diagram of the one-dimensional Bose-Hubbard model with nearest-neighbor interaction is investigated using the Density-Matrix Renormalization Group. Recen…

nucl-th1997★ 4 cited

Existence and transitions properties of three-deuteron muonic molecule (3d 2e^- μ^-)

V. B. Belyaev, D. E. Monakhov, S. A. Sofianos +1

We calculated the energy and the size of the three-deuteron muonic molecule (3d 2e^- μ^-) = D_3 μ. It turns out that this system possesses two equilibrium positions, one at distanc…

hep-ph1997★ 28 cited

The Spin and Flavour Dependence of High-Energy Photoabsorption

S. D. Bass, M. M. Brisudova

We review the present data on high-energy, spin-dependent photoabsorption. We find a strong isotriplet term in which persists from GeV to high $Q^2…

hep-lat1997★ 3 cited

Improving the Lattice QCD Hamiltonian

Xiang-Qian Luo, Shuo-Hong Guo, Helmut Kroeger +1

Improvement of the Hamiltonian in lattice gauge theory is considered. We give explicit expressions for classical improvement and discuss also quantum corrections.

hep-lat1997★ 1 cited

Method for Extracting the Glueball Wave Function

J. Liu, X. Q. Luo, X. Fang +4

We describe a nonperturbative method for calculating the QCD vacuum and glueball wave functions, based on an eigenvalue equation approach to Hamiltonian lattice gauge theory. There…

cond-mat1997★ 58 cited

Is a Trapped One-Dimensional Bose Gas a Luttinger Liquid?

H. Monien, M. Linn, N. Elstner

The low-energy fluctuations of a trapped, interacting quasi one-dimensional Bose gas are studied. Our considerations apply to experiments with highly anisotropic traps. We show tha…

astro-ph1997★ 4 cited

Bow-shock induced star formation in the LMC?

Klaas S. de Boer, Jochen M. Braun, Antonella Vallenari +1

The structure of supergiant shells, in particular of LMC 4, is hard to explain with stochastic self-propagating star formation. A series of supergiant structures lies along the out…

hep-lat1997★ 25 cited

A critical comparison of different definitions of topological charge on the lattice

B. Alles, M. D'Elia, A. Di Giacomo +1

A detailed comparison is made between the field-theoretic and geometric definitions of topological charge density on the lattice. Their renormalizations with respect to continuum a…

dg-ga1997

Classification of stationary compact homogeneous special pseudo Kähler manifolds of semisimple groups

D. V. Alekseevsky, V. Cortes

The variation of Hodge structure of a Calabi-Yau 3-fold induces a canonical Kähler metric on its Kuranishi moduli space, known as the Weil-Petersson metric. Similarly, special pseu…

astro-ph1997★ 2 cited

The Peculiar-Velocity-Field in Structure Formation Theories with Cosmic Strings

Carsten van de Bruck

We investigate the peculiar velocity field due to long cosmic strings in several cosmological models and analyse the influence of a nonscaling behaviour of the string network, whic…

astro-ph1997★ 14 cited

A new approach to the reduction of "Carte du Ciel" plates

A. Ortiz-Gil, M. Hiesgen, P. Brosche

A new procedure for the reduction of "Carte du Ciel" plates is presented. A typical "Carte du Ciel" plate corresponding to the Bordeaux zone has been taken as an example. It shows…

cond-mat.stat-mech1997★ 6 cited

Metastability and spinodal points for a random walker on a triangle

Peter F. Arndt, Thomas Heinzel

We investigate time-dependent properties of a single particle model in which a random walker moves on a triangle and is subjected to non-local boundary conditions. This model exhib…

cond-mat.str-el1997★ 10 cited

Strong-coupling Expansions at Finite Temperatures: Application to Quantum Disordered and Quantum Critical Phases

Norbert Elstner, Rajiv. R. P. Singh

By combining conventional finite-temperature many-body perturbation theory with cluster expansions, we develop a systematic method to carry out high order arbitrary temperature per…

hep-ph1997★ 8 cited

Sum rules in the superpartner spectrum of the minimal supersymmetric standard model

Yoshiharu Kawamura, Tatsuo Kobayashi Jisuke Kubo

Assuming that the string inspired, universal sum rules for soft supersymmetry-breaking terms, which have been recently found both in a wide class of four-dimensional superstrings a…