In the discourse of quantum mechanics it is usual to say that non-commuting observables cannot have definite values at the same time, or that they cannot be simultaneously measured. But, what does the term ‘cannot’ mean in this context? Does it stand for impossible? Should Heisenberg’s principle be read in terms of uncertainty or of indeterminacy? On the other hand, whereas the debates about the nature of time in classical and relativistic mechanics have been many and varied, the question about the nature of time in quantum mechanics has not received the same attention, especially when compared to the large amount of literature on interpretive issues. The purpose of this paper is to show that, under a realist interpretation of quantum mechanics, these two matters, possibility and time, are strongly related. The final aim is to argue that, when possibility and actuality are conceived as irreducible modes of being, they are correlated to two different notions of time that can be distinguished in the quantum realm: parameter-time and event-time.

In the last years, the surprising bosonic behavior that a many-fermion system may acquire has raised interest because of theoretical and practical reasons. This trans-statistical behavior is usually considered to be the result of approximation modeling methods generally employed by physicists when faced with complexity. In this paper, we take a tensor product structure and an ontology of properties approach and provide two versions (standard and algebraic) of a toy model in order to argue that trans-statistical behavior allows for a realistic interpretation.

Francisco Bertelloni en “La teoría política medieval entre la tradición clásica y la modernidad” (2010) procura poner en evidencia cómo la transición de la filosofía política clásica a la filosofía social moderna encuentra un momento decisivo en la teoría política medieval, particularmente verificable en La monarquía de Tomás de Aquino, en la medida en que allí tiene lugar una reducción del concepto de polis a oikos. En esta presentación, pretendemos primeramente proponer nuestra reinterpretación de la génesis histórica del doble poder medieval; en segundo lugar, reconstruir la argumentación del autor en torno a la mencionada reducción; por último, sugerir una hipótesis de lectura de La monarquía, complementaria a la tesis del autor, en referencia a un posible desplazamiento a un plano sobrenatural del contenido político inherente a la concepción clásica.

Los criterios de identidad propuestos por la metafísica tradicional debieron ser sometidos a una profunda revisión cuando entró en escena la mecánica cuántica con sus característicos sistemas indistinguibles. En este trabajo aplicamos el modelo de espacios controversiales de Oscar Nudler para analizar la controversia sobre la identidad en el ámbito de la mecánica cuántica y proponer la introducción en el debate de una ontología cuántica de propiedades sin objetos. The identity criteria proposed by traditional metaphysics had to undergo a profound revision when quantum mechanics entered the scene with its characteristic indistinguishable systems. In this paper we apply Oscar Nudler’s model of controversial spaces to analyze the controversy over identity in the field of quantum mechanics and propose the introduction of a quantum ontology of properties without objects into the debate