منابع مشابه
Spatial Epidemics: Critical Behavior in One Dimension
In the simple mean-field SIS and SIR epidemic models, infection is transmitted from infectious to susceptible members of a finite population by independent p−coin tosses. Spatial variants of these models are proposed, in which finite populations of size N are situated at the sites of a lattice and infectious contacts are limited to individuals at neighboring sites. Scaling laws for these models...
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Advection-dispersion equation is solved in numerically by using combinations of differential quadrature method (DQM) and various time integration techniques covering some explicit or implicit single and multi step methods. Two different initial boundary value problems modeling conservative and nonconservative transports of some substance represented by initial data are chosen as test problems. ...
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[email protected] 2 Department of Computer Science, Villanova University, Villanova, USA. e-mail: [email protected] 3 Departament de Matemàtica Aplicada II, Universitat Politècnica de Catalunya, Barcelona, Spain. Partially supported by projects MCYT BFM2003-00368, MEC MTM2006-01267 and Gen. Cat. 2005SGR00692. e-mail: [email protected] 4 Chercheur qualifié du FNRS, Département d...
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We analyze the spectral structure of the one dimensional quantum mechanical system with point interaction, which is known to be parametrized by the group U(2). Based on the classification of the interactions in terms of symmetries, we show, on a general ground, how the fermion-boson duality and the spectral anholonomy recently discovered can arise. A vital role is played by a hidden su(2) forme...
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ژورنال
عنوان ژورنال: Communications in Mathematical Physics
سال: 1981
ISSN: 0010-3616,1432-0916
DOI: 10.1007/bf01208290