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  1. No Access

    Chapter

    Element Fluxes with Litterfall in Mature Stands of Norway Spruce and European Beech in Bavaria, South Germany

    Litterfall is the largest natural inflow of organic material and nutrients to the forest floor and in most European forests is dominated by that from the trees. The chemical composition of this material and th...

    B. Berg, P. Gerstberger in Biogeochemistry of Forested Catchments in a Changing Environment (2004)

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    Chapter

    Sequestration Rates for C and N in Soil Organic Matter at Four N-Polluted Temperate Forest Stands

    The quantification of terrestrial sources and sinks for carbon dioxide and nitrogen-based greenhouse gases is one of the most important tasks facing environmental scientists today. Central to this is the deter...

    B. Berg in Biogeochemistry of Forested Catchments in a Changing Environment (2004)

  3. No Access

    Chapter and Conference Paper

    Study of ± J Ising Spin Glasses via Multicanonical Ensemble

    We performed numerical simulations of 2D and 3D Edwards-Anderson spin glass models by using the recently developed multicanonical ensemble. Our ergodicity times increase with the lattice size approximately as V ...

    T. Celik, U. H. E. Hansmann, B. Berg in Computer Simulation Studies in Condensed-M… (1993)

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    Chapter

    SU(2) Lattice Gauge Theory: Standard Action Versus Symanzik’s Tree-Improved Action

    We carry out Monte Carlo simulations of the 4d SU(2) lattice gauge theory. The standard action and the Symanzik tree-improved action are used. Results for the string tension, glueball masses, and energy-momentum ...

    B. Berg, A. Billoire, S. Meyer, C. Panagiotakopoulos in Quantum Field Theory (1985)

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    Chapter

    Recent Results on the Instanton Approximation

    Recent results on the two-dimensional CPN−1 models suggest that the QCD instanton gas is dense and infrared finite. These results and the computation of quantum fluctuations of quarks in a multi-instanton backgro...

    B. Berg in Field Theoretical Methods in Particle Physics (1980)

  6. No Access

    Chapter and Conference Paper

    S matrix theory of the massive thirring model

    The S matrix theory of the massive Thirring model, describing the exact quantum scattering of solitons and their bound-states, is reviewed. Treated are: Factorization equations and their solution, boundstates,...

    B. Berg in Complex Analysis, Microlocal Calculus and Relativistic Quantum Theory (1980)

  7. No Access

    Chapter

    Comparisons of Decomposition Rates Measured by Means of Cellulose

    Cellulose has been used as a model substance in decomposition studies in the IBP tundra projects (Rosswall, 1974), and should prove particularly suitable for use in comparative studies. It is free of leaching ass...

    B. Berg, L. Kärenlampi, A. K. Veum in Fennoscandian Tundra Ecosystems (1975)