What are the systems that decohere? (2010)
Castagnino, Mario, Fortin, Sebastian, Lombardi, Olimpia
The fact that the Environment Induced Decoherence approach offers no general criterion to decide where to place the "cut" between system and environment has been considered as a serious conceptual...
Suppression of decoherence in a generalization of the spin-bath model (2010)
Castagnino, Mario, Fortin, Sebastian, Lombardi, Olimpia
The works on decoherence due to spin baths usually agree in studying a one-spin system in interaction with a large spin bath. In this paper we generalize those models by analyzing a many-spin system...
Is the decoherence of a system the result of its interaction with the environment? (2010)
Castagnino, Mario, Fortin, Sebastian, Lombardi, Olimpia
According to a usual reading, decoherence is a process resulting from the interaction between a small system and its large environment where information and energy are dissipated. The particular...
The problem of identifying the system and the environment in the phenomenon of decoherence (2010)
Lombardi, Olimpia, Fortin, Sebastian, Castagnino, Mario
According to the environment-induced approach to decoherence (EID), the split of the Universe into the degrees of freedom which are of direct interest to the observer (the system) and the remaining...
Decoherence, measurement and interpretation of quantum mechanics (2009)
Ardenghi, Juan Sebastián, Castagnino, Mario, Fortin, Sebastian, Lombardi, Olimpia
According to our modal-Hamiltonian interpretation (MHI) of quantum mechanics, the Hamiltonian of the closed system defines the set of its definite-valued observables. This definition seems to be...
The effect of random coupling coefficients on decoherence (2009)
Castagnino, Mario, Fortin, Sebastian, Lombardi, Olimpia
The aim of this letter is to analyze the effect on decoherence of the randomness of the coupling coefficients involved in the interaction Hamiltonian. By studying the spin-bath model with computer...
Decoherence as a relative phenomenon: a generalization of the spin-bath model (2009)
Castagnino, Mario, Fortin, Sebastian, Lombardi, Olimpia
In this paper we propose a closed-system perspective to study decoherence. From this perspective we analyze the spin-bath model as presented in the literature, and a natural generalization of that...
A general theoretical framework for decoherence in open and closed systems (2009)
Castagnino, Mario, Fortin, Sebastian, Laura, Roberto, Lombardi, Olimpia
A general theoretical framework for decoherence is proposed, which encompasses formalisms originally devised to deal just with open or with closed systems. The conditions for decoherence are clearly...
A modal-Hamiltonian interpretation of quantum mechanics (2008)
Lombardi, Olimpia, Castagnino, Mario
The aim of this paper is to introduce a new member of the family of the modal interpretations of quantum mechanics. In this modal-Hamiltonian interpretation, the Hamiltonian of the quantum system...
Philosophy and Relativity (2007)
With his General Theory of Relativity, Albert Einstein produced a revolution in our conception of reality and of the knowledge we can obtain from it. This revolution can be viewed from philosophy as...
A modal-Hamiltonian interpretation of quantum mechanics (2006)
Lombardi, Olimpia, Castagnino, Mario
The aim of this paper is to introduce a new member of the family of the modal interpretations of quantum mechanics. In this modal-Hamiltonian interpretation, the Hamiltonian of the quantum system...
A modal-Hamiltonian interpretation of quantum mechanics (2006)
Castagnino, Mario, Lombardi, Olimpia
The aim of this paper is to introduce a new member of the family of modal interpretations of quantum mechanics. In this modal-Hamiltonian interpretation, the Hamiltonian of the quantum system plays a...
The arrow of time: from universe time-asymmetry to local irreversible processes (2006)
Aiello, Matias, Castagnino, Mario, Lombardi, Olimpia
In several previous papers we have argued for a global and non-entropic approach to the problem of the arrow of time, according to which the ''arrow'' is only a metaphorical way of expressing the...
Decoherence in closed and open systems (2006)
Castagnino, Mario, Laura, Roberto, Lombardi, Olimpia
A generalized formal framework for decoherence, that can be used both in open and closed quantum systems, is sketched. In this context, the relationship between the decoherence of a closed system and...
A General Conceptual Framework for Decoherence in Closed and Open Systems (2006)
Castagnino, Mario, Laura, Roberto, Lombardi, Olimpia
In this paper we argue that the formalisms for decoherence originally devised to deal just with closed or open systems can be subsumed under a general conceptual framework, in such a way that they...
Time-reversal invariance and irreversibility in time-asymmetric quantum mechanics (2005)
Castagnino, Mario, Gadella, Manuel, Lombardi, Olimpia
The aim of this paper is to analyze the concepts of time-reversal invariance and irreversibility in the so-called 'time-asymmetric quantum mechanics'. We begin with pointing out the difference...
The classical limit of non-integrable quantum systems (2005)
Castagnino, Mario, Lombardi, Olimpia
The classical limit of non-integrable quantum systems is studied. We define non-integrable quantum systems as those which have, as their classical limit, a non-integrable classical system. In order...
Decoherence time in self-induced decoherence (2005)
Castagnino, Mario, Lombardi, Olimpia
A general method for obtaining the decoherence time in self-induced decoherence is presented. In particular, it is shown that such a time can be computed from the poles of the resolvent or of the...
The Ontological Autonomy of the Chemical World (2004)
Lombardi, Olimpia, Labarca, Martín
In the problem of the relationship between chemistry and physics, many authors take for granted the ontological reduction of the chemical world to the world of physics. The autonomy of chemistry is...
Self-Induced Decoherence and the Classical Limit of Quantum Mechanics (2004)
Castagnino, Mario, Lombardi, Olimpia
In this paper we argue that the emergence of the classical world from the underlying quantum reality involves two elements: self-induced decoherence and macroscopicity. Self-induced decoherence does...
The direction of time: from the global arrow to the local arrow (2003)
Castagnino, Mario, Lara, Luis, Lombardi, Olimpia
In this paper we discuss the traditional approaches to the problem of the arrow of time. On the basis of this discussion we adopt a global and non-entropic approach, according to which the arrow of...
The cosmological origin of time-asymmetry (2002)
Castagnino, Mario, Lara, Luis, Lombardi, Olimpia
In this paper we address the problem of the arrow of time from a cosmological point of view, rejecting the traditional entropic approach that defines the future direction of time as the direction of...
The self-induced approach to decoherence in cosmology (2002)
Castagnino, Mario, Lombardi, Olimpia
In this paper we will present the \QTR{it}{self-induced approach} to decoherence, which does not require the interaction between the system and the environment: decoherence in closed quantum systems...
Time asymmetry as a consequence of the global properties of the universe (2002)
Castagnino, Mario, Lara, Luis, Lombardi, Olimpia
A global definition of time-asymmetry is presented. Schulman's two arrows of time model is criticized.
Self-Induced Selection: A New Approach to Quantum Decoherence (2002)
Castagnino, Mario, Lombardi, Olimpia
According to Zurek, decoherence is a process resulting from the interaction between a quantum system and its environment; this process singles out a preferred set of states, usually called pointer...
The Arrow of Time in Cosmology (2002)
Castagnino, Mario, Lombardi, Olimpia, Lara, Luis
Scientific cosmology is an empirical discipline whose objects of study are the large-scale properties of the universe. In this context, it is usual to call the direction of the expansion of the...
¿Qué son los objetos del "Tractatus"? (1999)
En este trabajo se brinda una interpretación del concepto de `objeto' en el contexto del Tractatus. Se argumenta que (i) los `objetos' son entidades lógicas, nodos de la red lógica común a todos...