Quantum Objects
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. La filosofía trascendental y la interpretación de Bohr de la teoría cuántica
Kant's transcendental philosophy makes a distinction between the conditions of objectivity of knowledge and those of its systematic unity. In this article we aim to show that these two moments of scientific knowledge articulate Bohr´s interpretation of quantum theory. We shall see that the demand of objectivity of knowledge grounds the classical character o
Scientiae Studia. Publicado em: 2012
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2. CIÊNCIA E TÉCNICA EM HEIDEGGER E HEISENBERG / SCIENCE AND TECHNIQUE IN HEIDEGGER AND HEISENBERG
The classical physical science distinguishes itself as a previous project, consisting of the fundamental concepts of elements such as calculation, time, space, motion, matter, force and directed to capture all the nature phenomena supposedly unified. Quantum mechanics advances beyond these postulates, evidencing the inevitable interference of the subject in
Publicado em: 2009
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3. Interferencia quantica com objetos complexos : o efeito dos graus de liberdade internos / Quantum interference with complex objects : the effects of internal degrees of freedom
Nesta dissertação, analisamos o efeito dos graus de liberdade internos de um objeto na dinâmica do seu centro de massa visando a determinar sua relevância para processos de descoerência em experimentos de fenda dupla. Mostramos que esses graus de liberdade se acoplam ao centro de massa na presença de um potencial que quebra a invariância translacional
Publicado em: 2008
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4. Magneto-optics of layers of semiconductor quantum dots and nano-rings
We have studied the collective magneto-optical response of layers of semiconductor quantum dots and nano-rings. Expressions for both the polarizability of the individual nano-objects have been used to determine the magneto-optical response on square two-dimensional lattices on those nano-objects as a function on frequency, magnetic field and angle of inciden
Brazilian Journal of Physics. Publicado em: 2006-06
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5. Indistinguibilidade: uma abordagem por meio de estruturas / Indistinguishability: an approach through the structures
The concept of indistinguishability in a structure, understood as invariance under the automorphisms of that structure, is presented, analysed and applied to the examination of the philosophical problem of indistinguishable objects. Specially considered is the version of this problem that appears in the quantum theory.
Publicado em: 2006
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6. Comics are imagetic information attached to universitary teaching / As histórias em quadrinhos como informação imagética integrada ao ensino universitário
Comics are indispensable, expressive visual objects for communication and information because they have followed the cultural process of humanity since its beginning. Comics also exist because the technology made them possible. The scientificparadigm has changes from classic Cartesians to quantum, transforming the interaction between man and reality, from a
Publicado em: 2006
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7. Interferometry with large molecules: exploration of coherence, decoherence and novel beam methods
Quantum experiments with complex objects are of fundamental interest as they allow to quantitatively trace the quantum-to-classical transition under the influence of various interactions between the quantum object and its environment. We briefly review the present status of matter wave interferometry and decoherence studies with large molecules and focus in
Brazilian Journal of Physics. Publicado em: 2005-06
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8. Physics of deformed special relativity: relativity principle revisited
In many different ways, Deformed Special Relativity (DSR) has been argued to provide an effective limit of quantum gravity in almost-flat regime. Unfortunately, DSR is up to now plagued by many conceptual problems (in particular how it describes macroscopic objects) which forbids a definitive physical interpretation and clear predictions. Here we propose a c
Brazilian Journal of Physics. Publicado em: 2005-06
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9. CONSISTÊNCIA NO CÁLCULO PERTURBATIVO: A ELETRODINÂMICA QUÂNTICA E A ANOMALIA AVV / CONSISTENCY IN THE PERTURBATIVE CALCULATION: THE QUANTUM ELETRODYNAMIC AND THE AVV ANOMALY
We use a very general calculational method, concerning the divergences manipulations and calculations, in order to treat the perturbative solution of quantum electrodynamics (QED), at the one loop level, as well as to study the perturbative origin of the axial triangle anomaly related with the electromagnetic decay of the neutral pion. Within the context of
Publicado em: 2004
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10. Remarks on Topological Models and Fractional Statistics
One of the most intriguing aspects of Chern-Simons-type topological models is the fractional statistics of point particles which has been shown essential for our understanding of the fractional quantum Hall effects. Furthermore these ideas are applied to the study of high Tc superconductivity. We present here an recently proposed model for fractional spin wi
Brazilian Journal of Physics. Publicado em: 2001-06
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11. Monopoles and fractional vortices in chiral superconductors
I discuss two exotic objects that must be experimentally identified in chiral superfluids and superconductors. These are (i) the vortex with a fractional quantum number (N = 1/2 in chiral superfluids, and N = 1/2 and N = 1/4 in chiral superconductors), which plays the part of the Alice string in relativistic theories and (ii) the hedgehog in the ^l field, wh
The National Academy of Sciences.