Dynamics of the Distorted Diamond Chain

We present results on the dynamics of the distorted diamond chain, S=1/2 dimers alternating with single spins 1/2 and exchange couplings $J_1$ and $J_3$ in between. The dynamics in the spin fluid (SF) and tetramer-dimer (TD) phases is investigated numerically by exact diagonalisation for up to 24 spins. Representative excitation spectra are presented, both for zero magnetic field and in the 1/3 plateau phase and the relevant parameters are determined across the phase diagram. The behavior across the SF-TD phase transition line is discussed for the specific heat and for excitation spectra. The relevance of the distorted diamond chain model for the material Cu$_3$(CO$_3$)$_2$(OH)$_2$ (azurite) is discussed with particular emphasis on inelastic neutron scattering experiments, a recent suggestion of one possibly ferromagnetic coupling constant is not confirmed.Comment: 24 pages, 8 figure

Finite Temperature Dynamics of the Spin 1/2 Bond Alternating Heisenberg Antiferromagnetic Chain

We present results for the dynamic structure factor of the S=1/2 bond alternating Heisenberg chain over a large range of frequencies and temperatures. Data are obtained from a numerical evaluation of thermal averages based on the calculation of all eigenvalues and eigenfunctions for chains of up to 20 spins. Interpretation is guided by the exact temperature dependence in the noninteracting dimer limit which remains qualitatively valid up to an interdimer exchange $\lambda \approx 0.5$. The temperature induced central peak around zero frequency is clearly identified and aspects of the crossover to spin diffusion in its variation from low to high temperatures are discussed. The one-magnon peak acquires an asymmetric shape with increasing temperature. The two-magnon peak is dominated by the S=1 bound state which remains well defined up to temperatures of the order of J. The variation with temperature and wavevector of the integrated intensity for one and two magnon scattering and of the central peak are discussed.Comment: 8 pages, 8 figure

Consistência do software zonexpert 1.0 no Município de Ituporanga-SC para a cultura da cebola

Trabalho de Conclusão de Curso - Universidade Federal de Santa Catarina. Curso de Agronomia

Avaliação do rastreamento para câncer de prostata em homens com antígeno prostático específico menor que 3,0 ng/ml.

Trabalho de Conclusão de Curso - Universidade Federal de Santa Catarina. Curso de Medicina. Dapartamento de Clínica Cirúrgica

The Integration of Palestinian-Israeli Labour Markets: A CGE Approach

Replaced with revised version of paper 07/12/11.labor market, CGE, Labor and Human Capital,

A 2004 social accounting matrix for Israel : documentation of an economy-wide database with a focus on agriculture, the labour market, and income distribution

This document describes the Israeli Social Accounting Matrix (SAM) for the year 2004, developed by the Agricultural and Food Policy Group at the University of Hohenheim. The SAM is a part of a larger research project which aims to analyse several economic, trade, and labour policies in the context of economic integration of agriculture between Israel and the West Bank. Data are obtained from various sources in Israel. Sources include the Israeli Central Bureau of Statistics (ICBS), the Central Bank of Israel (CBI), and the Israeli Tax Authority (ITA). Data from sources outside of Israel are used to fill-in some gaps in the domestic reports. External sources include the World Trade Organization (WTO), the Organisation for Economic Co-operation and Development (OECD), and the World Bank. The SAM provides data on 47 sectors with activities separated from commodities, 36 labour force types, 10 household groups, as well as 17 tax accounts in addition to 37 accounts reserved for taxes on production factors. A topdown approach is pursued by first building a balanced macro SAM which is consistent with 2004 national account data. Subsequently, the macro SAM is disaggregated into a micro SAM which is balanced in several steps.Dieser Bericht beschreibt die ?Social Accounting Matrix? (SAM) für Israel für das Jahr 2004, welche am Fachgebiet für Agrar- und Ernährungspolitik der Universität Hohenheim erstellt wurde. Die israelische SAM ist Teil eines größeren Forschungsprojektes mit dem Ziel verschiedene ökonomische, Handels- und Arbeitsmarktpolitiken im Kontext der ökonomischen Integration von landwirtschaftlichen Märkten zwischen Israel und dem Westjordanland zu analysieren. Es werden Daten von verschiedenen israelischen Quellen verwandt: dem israelischen statistischem Amt (ICBS), der israelischen Zentralbank (BOI) und der israelischen Steuerbehörde (ITA). Diese werde durch nicht-israelische Quellen ergänzt, welche die Welthandelsorganisation (WTO), die Organisation für wirtschaftliche Zusammenarbeit und Entwicklung (OECD), sowie die Weltbank umfassen. Die SAM differenziert 47 Sektoren, wobei Aktivitäten und Güter unterschieden werden. Ferner beinhaltet die SAM 36 Klassen des Produktionsfaktors Arbeit und 10 unterschiedliche Haushaltsgruppen, die durch 54 verschiedene Steuern (davon 37 auf Produktionsfaktoren) ergänzt werden. Die Erstellung der SAM erfolgt folgendermaßen: zuerst wird eine mit den israelischen volkswirtschaftlichen Daten für 2004 konsistente Makro-SAM erstellt. Diese wird im nächsten Schritt disaggregiert in eine detaillierte Mikro-SAM, welche in mehreren Stufen ausbalanciert wird

Numerical simulations of dynamical gluinos in SU(3) Yang-Mills theory: first results

In a numerical Monte Carlo simulation of SU(3) Yang-Mills theory with dynamical gluinos we have investigated the behaviour of the expectation value of the scalar and pseudoscalar gluino condensates in order to determine the phase structure. Preliminary results are presented as a function of the hopping parameter

Monte Carlo simulation of SU(2) Yang-Mills theory with light gluinos

In a numerical Monte Carlo simulation of SU(2) Yang-Mills theory with light dynamical gluinos the low energy features of the dynamics as confinement and bound state mass spectrum are investigated. The motivation is supersymmetry at vanishing gluino mass. The performance of the applied two-step multi-bosonic dynamical fermion algorithm is discussed.Comment: latex, 48 pages, 16 figures with epsfi