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58  Articles
1 of 7 pages  |  10  records  |  more records»
In this paper we extend previous results obtained in the framework of the Lagrangian formalism for the normal-state case to the superconducting state. The non-perturbative expansion applied to the generalized Hubbard model describing N-fold-degenerate cor... see more

Nghiên c?u này mang m?c dích khám phá xem li?u phuong pháp Feynman có phù h?p v?i h?c sinh trung h?c ph? thông ? Vi?t Nam hay không và li?u vi?c áp d?ng k? thu?t này có dem l?i hi?u qu? trong vi?c c?i thi?n kh? nang ng? pháp c?a các em h?c sinh. 40 h?c si... see more

We discuss a less known aspect of Feynman’s multifaceted scientific work, centered about his interest in molecular biology, which came out around 1959 and lasted for several years. After a quick historical reconstruction about the birth of molecular biolo... see more

En este trabajo se presenta un conjunto de situaciones que componen una secuencia diseñada para enseñar conceptos relativos a la luz, que incluyen y enfatizan su aspecto cuántico, con el fin de promover su conceptualización en estudiantes del último año d... see more

There has been a recent revival of interest in the notion of a ‘trajectory’ of a quantum particle. In this paper, we detail the relationship between Dirac’s ideas, Feynman paths and the Bohm approach. The key to the relationship is the weak value of the m... see more

O presente estudo tem como objetivo descrever de forma breve e elucidativa o funcionamento dos números complexos na perspectiva de Feynman. O autor demonstra claramente seu ponto de vista, fazendo um passo a passo dos fundamentos matemáticos básicos, até ... see more

Des analogies ont été faites entre la théorie quantique et la théorie stochastique qui décrivent des modèles d’évolution complètement différents dans des statuts mathématiques semblables ; Les processus stochastiques markoviens permettent une description ... see more

O presente estudo tem como objetivo descrever de forma breve e elucidativa o funcionamento dos números complexos na perspectiva de Feynman. O autor demonstra claramente seu ponto de vista, fazendo um passo a passo dos fundamentos matemáticos básicos, até ... see more

The fine-structure constant, which determines the strength of the electromagnetic interaction, is briefly reviewed beginning with its introduction by Arnold Sommerfeld and also includes the interest of Wolfgang Pauli, Paul Dirac, Richard Feynman and other... see more

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