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556 results on '"Kirsch, W."'

1. Lifshitz tails for the Interband Light Absorption Coefficient

Author

Kirsch, W. and Krishna, M.

Subjects
Mathematical Physics
Abstract

In this paper we consider the Interband Light Absorption Coefficient for various models. We show that at the lower and upper edges of the spectrum the Lifshitz tails behaviour of the density of states implies similar behaviour for the ILAC at appropriate energies. The Lifshitz tails property is also exhibited at some points corresponding to the internal band edges of the density of states., Comment: 21 pages, 2 figures

Published
2009

2. On the Mott formula for the a.c. conductivity and binary correlators in the strong localization regime of disordered systems

Author

Kirsch, W., Lenoble, O., and Pastur, L.

Subjects
Mathematical Physics
Abstract

We present a method that allows us to find asymptotic form of various characteristics of disordered systems in the strong localization regime, i.e., when either the random potential is big enough or the energy is close enough to the spectrum edges. The method is based on the hypothesis that relevant realizations of the random potential in the strong localization regime have the form of deep random wells that are uniformly and chaotically distributed in the space with a sufficiently small density. Assuming this and using the density expansion, we show first that the density of wells coincides in the leading order with the density of states. Thus the density of states is in fact the small parameter of the theory in the strong localization regime. Then we derive the Mott formula for the low frequency conductivity and the asymptotic formulas for certain two-point correlators when the difference of respective energies is small., Comment: 27 pages, 2 figures, LateX, submitted to J.Phys.A

Published
2003
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3. Approach to Equilibrium for a Forced Burgers Equation

Author

Kirsch, W. and Simon, B.

Subjects
Mathematical Physics
Abstract

We show that approach to equilibrium in certain forced Burgers equations is implied by a decay estimate on a suitable intrinsic semigroup estimate, and we verify this estimate in a variety of cases including a periodic force., Comment: To appear in Journal of Evolution Equations

Published
2001

11. Interval type local limit theorems for lattice type random variables and distributions.

Author

Fleermann, M., Kirsch, W., and Toth, G.

Subjects
*DISTRIBUTION (Probability theory), *LIMIT theorems, *CONTINUOUS distributions, *STATISTICAL mechanics, *RANDOM variables
Abstract

In this paper, we propose a new interpretation of local limit theorems for univariate and multivariate distributions on lattices. Using elementary techniques, we show that – given a local limit theorem in the standard sense – the distributions are approximated well by the limit distribution, uniformly on intervals of possibly decaying length. We identify the maximally allowable decay speed of the interval lengths. Further, we show that for continuous distributions, the interval type local law holds without any decay speed restrictions on the interval lengths. We show that various examples fit within this framework, such as standardized sums of i.i.d. random vectors or correlated random vectors induced by multidimensional spin models from statistical mechanics. [ABSTRACT FROM AUTHOR]

Published
2022
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24. Der Stoffwechsel der landwirtschaftlichen Nutztiere

Author

Völtz, W., Kirsch, W., Seuffert, Rudolf W., Lehmann, Franz, Lintzel, W., Paechtner, J., Mangold, Ernst, Armbruster, L., editor, Honcamp, F., editor, Kirsch, W., editor, Lehmann, F., editor, Lintzel, W., editor, Mangold, E., editor, Paechtner, J., editor, Seuffert, R. W., editor, Völtz, W., editor, and Wundsch, H. H., editor

Published
1931
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25. Der Eiweißstoffwechsel der landwirtschaftlichen Nutztiere

Author

Völtz, W., Kirsch, W., Mangold, Ernst, editor, Armbruster, L., editor, Honcamp, F., editor, Kirsch, W., editor, Lehmann, F., editor, Lintzel, W., editor, Mangold, E., editor, Paechtner, J., editor, Seuffert, R. W., editor, Völtz, W., editor, and Wundsch, H. H., editor

Published
1931
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28. Point interaction Hamiltonians for crystals with random defects

Author

Albeverio, S., Figari, R., Gesztesy, F., Høegh-Krohn, R., Holden, H., Kirsch, W., Araki, H., editor, Ehlers, J., editor, Hepp, K., editor, Kippenhahn, R., editor, Ruelle, D., editor, Weidenmüller, H. A., editor, Wess, J., editor, Zittartz, J., editor, Beiglböck, W., editor, Exner, Pavel, editor, and Šeba, Petr, editor

Published
1989
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30. Thoughts on the Biology and Therapy of Malignant Gliomas

Author

Kirsch, W. M., van Buskirk, J. J., Schulz, D., Tabuchi, K., Allfrey, V. G., editor, Allgöwer, M., editor, Bauer, K. H., editor, Berenblum, I., editor, Bergel, F., editor, Bernard, J., editor, Bernhard, W., editor, Blokhin, N. N., editor, Bock, H. E., editor, Braun, W., editor, Bucalossi, P., editor, Chaklin, A. V., editor, Chorazy, M., editor, Cunningham, G. J., editor, Dargent, M., editor, Della Porta, G., editor, Denoix, P., editor, Dulbecco, R., editor, Eagle, H., editor, Eker, R., editor, Good, R. A., editor, Grabar, P., editor, Hamperl, H., editor, Harris, R. J. C., editor, Hecker, E., editor, Herbeuval, R., editor, Higginson, J., editor, Hueper, W. C., editor, Isliker, H., editor, Kieler, J., editor, Klein, G., editor, Koprowski, H., editor, Koss, L. G., editor, Martz, G., editor, Mathé, G., editor, Mühlbock, O., editor, Nakahara, W., editor, Old, L. J., editor, Potter, V. R., editor, Sabin, A. B., editor, Sachs, L., editor, Saxén, E. A., editor, Schmidt, C. G., editor, Spiegelman, S., editor, Szybalski, W., editor, Tagnon, H., editor, Taylor, R. M., editor, Tissières, A., editor, Uehlinger, E., editor, Wissler, R. W., editor, Rentchnick, P., editor, and Hekmatpanah, Javad, editor

Published
1975
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49. Evolutionäre Organisationstheorie

Author

Kirsch, W, Seidl, D, and University of Zurich

Subjects
10004 Department of Business Administration, 330 Economics
Published
2010

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