902 resultados para strange particles


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In order to explicate Murakami's version of the official culture, I have analyzed the novel with the works of several different theorists. Primarily, I drew my own understanding of the official culture from Raymond Williams's examination of culture in Marxism and Literature. His terminology became helpful in writing about the operation of the System and the Town, though it did not define that operation precisely. Williams's work also introduced me to the theory behind the official culture's manipulation and exclusion of historical aspects in order to create their "official" version of history, from which the official culture draws its identity. For further analysis of the treatment of history, I turned to Friedrich Nietzsche's On the Advantage and Disadvantage of History for Life. Though it examines the official culture's manipulation of history in a much more in-depth manner, it seems to have influenced Murakami's treatment of individual memories and cultural histories. For instance, the herd ofunicoms in the End of the World resembles Nietzsche's description of the ''unhistorical herd," or has the potential to resemble it. With these theories I was able to access the mechanisms of cultural control that Murakami depicts in the form of the System and the Town, and from there I was able to develop a model for how the narrator struggles to subvert that control. Both sides of that struggle are depicted and re-imagined many times throughout Hard-Boiled Wonderland and the End of the World.

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A dissertação consiste de quarto partes. A primeira é uma resenha sobre a incorporação formal de preocupações com posição relativa (relative concerns) nos modelos econômicos. Creio que existe espaço para uma resenha desse tipo visto que nenhuma foi feita desde 1992, quando começou a literatura relevante para a presente discussão. O ensaio seguinte consiste da prova de um teorema sobre a distribuição igualitária de riqueza no contexto de preocupação com o status social. A conclusão é bastante cínica em relação a uma das vacas sagradas da maioria dos utopismos. O terceiro ensaio é de novo um teorema, de novo como conclusões cínicas, a respeito da intuição que uma sociedade com os membros suficientemente (mas não perfeitamente) altruístas seria estável e sem conflitos. O último ensaio é uma conjectura baseada num artigo recente de David Friedman. A minha ambição foi tentar explicar o comportamento aparentemente puramente caprichoso e irracional de law enforment nos regimes ditatoriais. O que une os ensaios é uma tentativa de rever algumas discussões típicas até mais das ciências humanas que sociais valendo se do instrumental formal da teoria dos jogos e a intolerância à ambiguidades nutrida pelas últimas gerações dos economistas.

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A empresa é um dos elementos centrais do debate contemporâneo sobre a sociedade. Acusada por uns, idolatrada por outros, sua multiplicidade de papéis não se presta a análises simplistas. Gareth MORGAN demonstrou que a compreensão de sua realidade organizacional pode valer-se do recurso à metáfora, comparando seu funcionamento a máquinas, organismos e sistemas políticos, entre outras possibilidades. Morgan não objetivava esgotar ou definir o estudo das organizações, mas sim ampliá-lo a partir de novas perspectivas

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The problem of a spinless particle subject to a general mixing of vector and scalar screened Coulomb potentials in a two-dimensional world is analyzed and its bounded solutions are found. Some unusual results, including the existence of a bona fide solitary zero-eigenmode solution, are revealed for the Klein-Gordon equation. The cases of pure vector and scalar potentials, already analyzed in previous works, are obtained as particular cases.

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Dirac-like monopoles are studied in three-dimensional Abelian Maxwell and Maxwell-Chern-Simons models. Their scalar nature is highlighted and discussed through a dimensional reduction of four-dimensional electrodynamics with electric and magnetic sources. Some general properties and similarities whether considered in Minkowski or Euclidean space are mentioned. However, by virtue of the structure of the space-time in which they are studied, a number of differences among them occur. Furthermore, we pay attention to some consequences of these objects when they act upon the usual particles. Among other subjects, special attention is given to the study of a Lorentz-violating nonminimal coupling between neutral fermions and the field generated by a monopole alone. In addition, an analogue of the Aharonov-Casher effect is discussed in this framework.

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The problem of confinement of spinless particles in 1 + 1 dimensions is approached with a linear potential by considering a mixing of Lorentz vector and scalar couplings. Analytical bound-states solutions are obtained when the scalar coupling is of sufficient intensity compared to the vector coupling. (c) 2005 Elsevier B.V. All rights reserved.

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The problem of a spinless particle subject to a general mixing of vector and scalar inversely linear potentials in a two-dimensional world is analyzed. Exact bounded solutions are found in closed form by imposing boundary conditions on the eigenfunctions which ensure that the effective Hamiltonian is Hermitian for all the points of the space. The nonrelativistic limit of our results adds a new support to the conclusion that even-parity solutions to the nonrelativistic one-dimensional hydrogen atom do not exist. (c) 2005 Elsevier B.V. All rights reserved.

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The Klein - Gordon and the Dirac equations with vector and scalar potentials are investigated under a more general condition, V-v = V-s + constant. These isospectral problems are solved in the case of squared trigonometric potential functions and bound states for either particles or antiparticles are found. The eigenvalues and eigenfunctions are discussed in some detail. It is revealed that a spin-0 particle is better localized than a spin-1/2 particle when they have the same mass and are subjected to the same potentials.

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)