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15
Interpreting the Quantum
, 1997
"... This paper is a commentary on the foundational significance of the CliftonBubHalvorson theorem characterizing quantum theory in terms of three informationtheoretic constraints. I argue that: (1) a quantum theory is best understood as a theory about the possibilities and impossibilities of informa ..."
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Cited by 17 (1 self)
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This paper is a commentary on the foundational significance of the CliftonBubHalvorson theorem characterizing quantum theory in terms of three informationtheoretic constraints. I argue that: (1) a quantum theory is best understood as a theory about the possibilities and impossibilities of information transfer, as opposed to a theory about the mechanics of nonclassical waves or particles, (2) given the informationtheoretic constraints, any mechanical theory of quantum phenomena that includes an account of the measuring instruments that reveal these phenomena must be empirically equivalent to a quantum theory, and (3) assuming the informationtheoretic constraints are in fact satisfied in our world, no mechanical theory of quantum phenomena that includes an account of measurement interactions can be acceptable, and the appropriate aim of physics at the fundamental level then becomes the representation and manipulation of information.
Quantum information and computation
 arXiv:quantph/0512125. Forthcoming in Butterfield and Earman (eds.) Handbook of Philosophy of Physics
, 2005
"... This Chapter deals with theoretical developments in the subject of quantum information and quantum computation, and includes an overview of classical information and some relevant quantum mechanics. The discussion covers topics in quantum communication, quantum cryptography, and quantum computation, ..."
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Cited by 4 (0 self)
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This Chapter deals with theoretical developments in the subject of quantum information and quantum computation, and includes an overview of classical information and some relevant quantum mechanics. The discussion covers topics in quantum communication, quantum cryptography, and quantum computation, and concludes by considering whether a perspective in terms of quantum information
Against ”Realism
"... We examine the prevalent use of the phrase “local realism ” in the context of Bell’s Theorem and associated experiments, with a focus on the question: what exactly is the ‘realism ’ in ‘local realism ’ supposed to mean? Carefully surveying several possible meanings, we argue that all of them are fla ..."
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Cited by 3 (0 self)
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We examine the prevalent use of the phrase “local realism ” in the context of Bell’s Theorem and associated experiments, with a focus on the question: what exactly is the ‘realism ’ in ‘local realism ’ supposed to mean? Carefully surveying several possible meanings, we argue that all of them are flawed in one way or another as attempts to point out a second premise (in addition to locality) on which the Bell inequalities rest, and (hence) which might be rejected in the face of empirical data violating the inequalities. We thus suggest that the phrase ‘local realism’ should be banned from future discussions of these issues, and urge physicists to revisit the foundational questions behind Bell’s Theorem. KEY WORDS: quantum mechanics; local realism; Bell’s theorem; EPR; quantum nonlocality
Variance Explained: Why size does not (always) matter
 In Research in organizational behavior
, 1999
"... I examine the role of explaining variance in the construction of explanatory theory. Explaining variance can be an insufficient basis for evaluating a theory (Lieberson, 1985). Starting with this insight, I suggest that models that provide explanations of variance do not necessarily provide good exp ..."
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Cited by 2 (1 self)
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I examine the role of explaining variance in the construction of explanatory theory. Explaining variance can be an insufficient basis for evaluating a theory (Lieberson, 1985). Starting with this insight, I suggest that models that provide explanations of variance do not necessarily provide good explanations of causal mechanisms. I then explore the utility of process models and theories (Mohr, 1982) relative to variance theories. I clarify the role of stochastic processes in such model building and discuss the implications of such processes for evaluating explanatory `adequacy'. Under some conditions, explaining variance may be neither a necessary nor a sufficient condition for good explanatory theory. I then identify some implications of this argument for developing and analyzing explanatory theory. These arguments are applied to two examples: (1) metaanalysis and (2) the disposition versus situation debate (a variant on the nature vs. nurture argument) to illustrate the implications of ...
Abduction or Inertia? The logic of syntactic change *
"... Two assumptions often considered principles of inquiry in historical generative syntax are that linguistic change is abductive (Andersen 1973) and that syntax is inert (Longobardi 2001). In this paper it is demonstrated that these two notions, if meaningfully interpreted, are not compatible: if we w ..."
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Two assumptions often considered principles of inquiry in historical generative syntax are that linguistic change is abductive (Andersen 1973) and that syntax is inert (Longobardi 2001). In this paper it is demonstrated that these two notions, if meaningfully interpreted, are not compatible: if we wish to develop a coherent theory of language acquisition and change, we must abandon one or the other. The conclusion reached is that that neither abduction nor inertia is a necessary or useful concept in diachronic syntax. I suggest that we should abandon both, instead treating syntactic change on its own terms. Two assumptions often considered principles of inquiry in historical generative syntax are that linguistic change is abductive (Andersen 1973) and that syntax is inert (Longobardi 2001). In this paper it is demonstrated that these two notions, if meaningfully interpreted, are not compatible: if we wish to develop a coherent theory of language acquisition and change, we must abandon one or the other, with important consequences for the way we conceptualize syntactic change. The paper is structured in four sections. In the first I present abduction, as introduced into the linguistic literature by Andersen (1973), and outline problems with the notion. Section 2 does the same for the concept of inertia. In Section 3 I outline how, and why, the two concepts are mutually incompatible. Section 4 concludes. 1. ABDUCTION AND ITS PROBLEMS The notion of abduction as a form of inference originated with the American semiotician and philosopher Charles Sanders Peirce. Andersen (1973) was the first linguist to incorporate it into a theory of language change. The following is his exposition (highly problematic, as I will demonstrate), which many linguists have followed (e.g. Lightfoot 1979; McMahon 1994;
Careers in a Complex World: The Search for New Perspectives from the “New Science”
"... is a doubleblind reviewed journal where articles are published in their original language as soon as they have been accepted. Copies of this article can be made free of charge and without securing permission, for purposes of teaching, research, or library reserve. Consent to other kinds of copying, ..."
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is a doubleblind reviewed journal where articles are published in their original language as soon as they have been accepted. Copies of this article can be made free of charge and without securing permission, for purposes of teaching, research, or library reserve. Consent to other kinds of copying, such as that for creating new works, or for resale, must be obtained from both the journal editor(s) and the author(s). For a free subscription to M@n@gement, and more information:
A Quantum Potential Description of OneDimensional TimeDependent Scattering From Square Barriers and Square Wells
, 1981
"... The timedependent scattering of onedimensional Gaussian wave packets of various energies incident on (1) a square potential barrier and (2) a square well is examined numerically, using the quantum potential introduced by Bohm. The timedependent quantum potential is calculated in each case, and th ..."
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The timedependent scattering of onedimensional Gaussian wave packets of various energies incident on (1) a square potential barrier and (2) a square well is examined numerically, using the quantum potential introduced by Bohm. The timedependent quantum potential is calculated in each case, and the results displayed on threedimensional computer plots. The particle trajectories from different initial positions within the wave packet are also shown, giving a detailed description of reflection and tunneling in terms of individual processes. The wider implications of this analysis are also briefly considered. 1.
Schrödinger’s Wave Mechanics Determine the Motion of a System Completely
, 2004
"... Einstein’s unpublished 1927 deterministic trajectory interpretation of quantum mechanics is critically examined, in particular with regard to the reason given by Einstein for rejecting his theory. It is shown that the aspect Einstein found objectionable—the mutual dependence of the motions of partic ..."
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Einstein’s unpublished 1927 deterministic trajectory interpretation of quantum mechanics is critically examined, in particular with regard to the reason given by Einstein for rejecting his theory. It is shown that the aspect Einstein found objectionable—the mutual dependence of the motions of particles when the (manybody) wavefunction factorises—is a generic attribute of his theory but that this feature may be removed by modifying Einstein’s method in either of two ways: using a suggestion of Grommer or, in a physically important special case, using a simpler technique. It is emphasized though that the presence or absence of the interdependence property does not determine the acceptability of a trajectory theory. It is shown that there are other grounds for rejecting Einstein’s theory (and the two modified theories), to do with its domain of applicability and compatibility with empirical predictions. That Einstein’s reason for rejection is not a priori grounds for discarding a trajectory theory is demonstrated by reference to an alternative deterministic trajectory theory that displays similar particle interdependence yet is compatible with quantum predictions. KEY WORDS: Einstein; quantum theory; interpretation; hidden variables; particle trajectories; entanglement.
Which finetuning arguments are fine?
, 2009
"... The argument from naturalness is widely employed in contemporary quantum field theory. Essentially a formalized aesthetic criterion, it received a meaning in the debate on the Higgs mechanism, which goes beyond aesthetics. We follow the history of technical definitions of fine tuning at the scale of ..."
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The argument from naturalness is widely employed in contemporary quantum field theory. Essentially a formalized aesthetic criterion, it received a meaning in the debate on the Higgs mechanism, which goes beyond aesthetics. We follow the history of technical definitions of fine tuning at the scale of electroweak symmetry breaking. It is argued that they give rise to a special interpretation of probability, which we call Gedankenfrequency. By extension of its original meaning, the argument from naturalness is used to compare different models beyond the Standard Model. We show that in this case naturalness cannot be defined objectively. Rather, it functions as sociohistorical heuristics in particle physics and it contributes to the advent of a probabilistic version of Popper’s falsificationism. 1
C.G.Timpson and H.R.Brown Entanglement and Relativity ∗
, 2002
"... Abstract. This paper surveys some of the questions that arise when we consider how entanglement and relativity are related via the notion of nonlocality. We begin by reviewing the role of entangled states in Bell inequality violation and question whether the associated notions of nonlocality lead ..."
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Abstract. This paper surveys some of the questions that arise when we consider how entanglement and relativity are related via the notion of nonlocality. We begin by reviewing the role of entangled states in Bell inequality violation and question whether the associated notions of nonlocality lead to problems with relativity. The use of entanglement and wavefunction collapse in Einstein’s famous incompleteness argument is then considered, before we go on to see how the issue of nonlocality is transformed if one considers quantum mechanics without collapse to be a complete theory, as in the Everett interpretation. 1