Vakuumstruktur der QCD mit Hadronstruktur Zwischenbericht

Available from TIB Hannover: DtF QN1(47,47) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman

Dynamik und Hadronisierung von Quarkmaterie Wissenschaftlicher Abschlussbericht

Available from TIB Hannover: D.Dt.F.QN1(10,49)+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman

Heisse Kern- und Quarkmaterie in Si-Stoessen Wissenschaftlicher Abschlussbericht

SIGLEAvailable from TIB Hannover: DtF QN1(35,20) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman

Untersuchungen zur inneren Struktur, insbesondere Spinstruktur der Nukleonen. 1. Teilprojekt: Berechnungen fuer laufende und zukuenftige Spinexperimente am DESY (HERMES) und CERN (COMPASS). 2. Teilprojekt: Polarisierte Proton-Proton Reaktionen. 3. Teilprojekt: Experimente fuer einen moeglichen zukuenftigen Elektron-Kern-Kollider (ENC) an der GSI Abschlussbericht

SIGLEAvailable from TIB Hannover: DtF QN1(92,29) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung und Forschung, Berlin (Germany)DEGerman

SiC-Elektronik. Teilvorhaben: Berechnung der Energiebandstruktur von SiC-Polytypen Schlussbericht

Detailed knowledge of the electronic structure is prerequisite for the design of electronic devices. For SiC polytypes this knowledge was lacking, in particular for near-band edge states. Our project aimed to filling this gap and to provide by means of ab-initio band calculations detailed information required for the design of devices. These informations include effective masses, density of states and carrier concentrations in conduction and valence bands of SiC polytypes. (orig.)SIGLEAvailable from TIB Hannover: DtF QN1(57,51) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman

Relativistic kinetic equations for electromagnetic, scalar and pseudoscalar interactions

We derive the kinetic equations for both the covariant and equal-time Wigner functions of Dirac particles with electromagnetic, scalar and pseudoscalar interactions. We emphasize the constraint equations for the spinor components in the equal-time formulation. (orig.)15 refs.Available from TIB Hannover: RO 801(95-57) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Perturbative renormalisation of the second moment of generalised parton distributions

We calculate the non-forward quark matrix elements of operators with two covariant derivatives needed for the renormalisation of the second moment of generalised parton distributions in one-loop lattice perturbation theory using Wilson fermions. For some representations of the hypercubic group commonly used in simulations we determine the sets of all possible mixing operators. For those representations the one-loop mixing matrices of renormalisation factors are found. Due to non-vanishing contributions of operators with external ordinary derivatives the number of contributing operators increases compared to forward matrix elements. (orig.)SIGLEAvailable from TIB Hannover / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

A lattice determination of light quark masses

A fully non-perturbative lattice determination of the up/down and strange quark masses is given for quenched QCD using both, O(a) improved Wilson fermions and ordinary Wilson fermions. For the strange quark mass with O(a) improved fermions we obtain m_s"M"S (#mu# = 2 GeV) = 105(4) MeV, using the interquark force scale r_0. Due to quenching problems fits are only possible for quark masses larger than the strange quark mass. If we extrapolate our fits to the up/down quark mass we find for the average mass m_l"M"S (#mu# = 2 GeV) = 4.4(2) MeV. (orig.)23 refs.Available from TIB Hannover: RA 2999(99-097) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Equal-time hierarchies for quantum transport theory

We investigate in the equal-time formalism the derivation and truncation of infinite hierarchies of equations of motion for the energy moments of the covariant Wigner function. From these hierarchies we then extract kinetic equations for the physical distribution functions which are related to low-order energy moments, and show how to determine the higher order moments in terms of these lowest order ones. We apply the general formalism to scalar and spinor QED with classical background fields and compare with the results derived from the three-dimensional Wigner transformation method. (orig.)20 refs.Available from TIB Hannover: RO 801(96-47) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

Nucleon electromagnetic form factors on the lattice and in chiral effective field theory

We compute the electromagnetic form factors of the nucleon in quenched lattice QCD, using non-perturbatively improved Wilson fermions, and compare the results with phenomenology and chiral effective field theory. (orig.)SIGLEAvailable from TIB Hannover: RA 2999(03-032) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman