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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...
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Article
A higher conserved current in the quantized massive thirring model
A higher conserved current in the quantized massive Thirring model is explicitly constructed.
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Article
The massive thirring model: Particle scattering in perturbation theory
We compute (n →m) particle, antiparticle scattering in the massive Thirring model up to the one-loop approximation. In agreement with presumed higher-order conservation laws there is no particle production and th...
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Article
ExactS-matrix of the adjoint SU(N) representation
We have calculated the exact factorisedS-matrices of the adjoint SU(N) representation in 1+1 space-time dimensions. Besides the trivial solution the only realised solution exhibits anO(N 2−1) symmetry.
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Article
Computation of quantum fluctuations around multi-instanton fields from exact Green's functions: TheCP n−1 Case
We calculate exactly the contribution of instanton fields to the partition function of ℂℙ n−1 models in two dimensions. Forn=2, the pure instanton gas is infrared finite, infinitely dense and generates a mass dyn...
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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...
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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,...
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Article
SU (2) lattice gauge theory and Monte Carlo calculations
Monte Carlo results for theSU (2) lattice gauge theory in four dimensions are presented. The string tension is measured with high statistics and also the mass of the perimeter term is determined. Wilson loop-plaq...
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Article
A note on γ traces for the Wilson action in the continuum limit
In d=4 and d=2 dimensions we calculate averages of certain products of γ matrices \((\pi (1 \pm \gamma _\mu )\rangle _L \) ...
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Article
Lambda scale for the improved latticeO(N) non-linear sigma model
Using the background field technique I computeι L I /ι ...
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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 ...
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Article
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 ...
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Article
Critical behaviour in baryonic matter
First we consider the phenomenology of deconfinement and chiral symmetry restoration for strongly interacting matter at non-vanishing baryon number density. Subsequently, we present numerical results obtained ...
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Article
Nitrogen release from litter in relation to the disappearance of lignin
Nitrogen dynamics were followed in several decomposing forest foliage litters in two contrasting ecosystem types. Litter types showing a significant net accumulation before a net release started were subjected...
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Article
Thoracic lymph drainage in the dog: Evaluation of a new model
A new model for selective sampling of thoracic lymph flow (TLF) and abdominal lymph flow (TDA) in the dog was assessed to ascertain whether there were extrathoracic contributions of lymph to the TLF. Inflating...
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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 ...
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Article
Litter mass loss rates in pine forests of Europe and Eastern United States: some relationships with climate and litter quality
The purpose of this study was to relate regional variation in litter mass-loss rates (first year) in pine forests to climate across a large, continental-scale area. The variation in mass-loss rate was analyzed...
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Article
Treatment of atypical leishmaniasis with interferon γ resulting in progression of Kaposi's sarcoma in an AIDS patient
Visceral leishmaniasis (kala-azar) affecting HIV-infected patient is being reported in increasing frequency. A 40-year-old German bisexual patient with full-blown AIDS is described who presented with Kaposi's ...
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Article
SV40 T/t-antigen induces premature mammary gland involution by apoptosis and selects for p53 missense mutation in mammary tumors
We recently established transgenic animals (WAP-SV-T/t) carrying the early coding region of Simian Virus 40 (SV40) under the transcriptional control of the whey acidic milk protein promoter (WAP), which restri...
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Article
Non-evidence of estrogen receptors in the rectal mucosa
The aim of the study was to investigate whether estrogen receptors are present in the rectal mucosa of premenopausal women compared to post-menopausal women and men. Thirty biopsies obtained from the rectal mu...
