This book explores this crucial phenomenon thereby introducing urgent questions of human interaction, the binding and breaking of time and space, and the entanglement of the material and the immaterial.

After a brief review of the field formulations and the relativistic non-instantaneous action-at-a-distance formulations of some well known classical theories, we study Rivacoba’s generalization of a theory with a linearly rising potential as a relativistic non-instantaneous action-at-a-distance theory. For this case we construct the corresponding field theory, which turns out to coincide with a model proposed by Kiskis to describe strong interactions. We construct the action functional for this field theory. Although this model belongs to (...) the class of Lagrangian theories with higher derivatives, it is shown that its action-at-a-distance counterpart has a much simpler form. A proposal to construct an action-at-a-distance description of Yang-Mills interactions is also presented. (shrink)

In the early modern age, two causal models are clearly identifiable: action at a distance—a typical Renaissance paradigm, widespread among thinkers involved in natural magic and seventeenth-century Neoplatonists—and action by contact, on which both the Aristotelians and the Cartesians agreed. Pierre Gassendi too seems to endorse the motto: ‘Nihil agit in distans nisi prius agit in medium’ [Nothing acts at a distance unless it acts through a medium]. In this essay, it will be shown that a (...) third causal model exists, according to which material bodies are surrounded by ‘atmospheres’ of effluvia or qualities, which spread within a circumscribed ‘sphere of activity’, whose extension is peculiar to each body. In particular, it will be shown: what the third causal model was like, from an ontological point of view, that is, how it centred on the concepts of effluvium and spiritus, or qualitas; what this model was like, from a gnoseological point of view; how it was theorized by... (shrink)

In the broadest sense of the phrase, there is action at a distance whenever there is a spatial or temporal gap between a cause and its effect. In this sense, it is not at all controversial that there is action at a distance. To cite a few instances: the page a few inches in front of you is impinging on your senses; the Sun is now warming the Earth; we are still living with the consequences of (...) the Second World War. What is controversial is the idea of unmediated action at a distance, where there is both a gap between cause and effect and no intermediate causes and effects to fill it. The three examples just mentioned are cases of action at a distance, certainly, but not, surely, unmediated action at a distance. What we expect to find, in each case, is a spatially and temporally continuous causal series stretching across time and space. (shrink)

What is space? It isn't a question that most of us normally stop to ask. Space is the venue of physics; it's where things exist, where they move and take shape. Yet over the past few decades, physicists have discovered a phenomenon that operates outside the confines of space and time. The phenomenon-the ability of one particle to affect another instantly across the vastness of space-appears to be almost magical. Einstein grappled with this oddity and couldn't quite resolve it, describing (...) it as "spooky action at a distance." But this strange occurrence has direct connections to black holes, particle collisions, and even the workings of gravity. If space isn't what we thought it was, then what is it?In Spooky Action at a Distance, George Musser sets out to answer that question, offering a provocative exploration of nonlocality and a celebration of the scientists who are trying to understand it. Musser guides us on an epic journey of scientific discovery into the lives of experimental physicists observing particles acting in tandem, astronomers discovering galaxies that look statistically identical, and cosmologists hoping to unravel the paradoxes surrounding the big bang. Their conclusions challenge our understanding not only of space and time but of the origins of the universe-and their insights are spurring profound technological innovation and suggesting a new grand unified theory of physics. (shrink)

A 2015 experiment by Hanson and Delft colleagues provided further confirmation that the quantum world violates the Bell inequalities, being the first Bell test to close two known experimental loopholes simultaneously. The experiment was also taken to provide new evidence of ‘spooky action at a distance’. Here we argue for caution about the latter claim. The Delft experiment relies on entanglement swapping, and our main claim is that this geometry introduces an additional loophole in the argument from violation (...) of the Bell inequalities to action at a distance: the apparent action at a distance may be an artifact of ‘collider bias’. In the absence of retrocausality, the sensitivity of such experiments to this ‘Collider Loophole’ depends on the temporal relation between the entanglement swapping measurement C and the two measurements A and B between which we seek to infer a causal connection. CL looms large if the C is in the future of A and B, but not if C is in the past. The Delft experiment itself is the intermediate case, in which the separation is spacelike. We argue that this leaves it vulnerable to CL, unable to establish conclusively that it avoids it. (shrink)

In this discussion paper, I seek to challenge Hylarie Kochiras’ recent claims on Newton’s attitude towards action at a distance, which will be presented in Section 1. In doing so, I shall include the positions of Andrew Janiak and John Henry in my discussion and present my own tackle on the matter . Additionally, I seek to strengthen Kochiras’ argument that Newton sought to explain the cause of gravity in terms of secondary causation . I also provide some (...) specification on what Kochiras calls ‘Newton’s substance counting problem’ . In conclusion, I suggest a historical correction .Keywords: Isaac Newton ; Action at a distance; Cause of gravity; Fourth letter to Bentley. (shrink)

This is a subject of recurrent interest which calls for review from time to time; I believe the last word upon it can never be said. Several topical reasons might be cited for attempting to deal with it at the present time, but these could not be pursued to the relevant applications in such a short discussion. In fact the subject is obviously a difficult one to deal with at all briefly since it is so closely bound up with other (...) large subjects—causality, space–time, and so on. (shrink)

Limited scholarly attention has been committed to the analysis of Nietzsche’s 1873 Time-Atom Theory, a fragment whose contentions strike both the seasoned and unseasoned reader of the Nachlass as especially speculative and grandiose. The principal objective of this essay is to critically review and extend the recent aspects of this limited commentary, focusing on the work of Gregory Whitlock, Robin Small and Keith Ansell-Pearson. I argue that an important and overlooked ambiguity is latent in Nietzsche’s framing of his argument, which (...) impinges upon the scope and purpose of the fragment. I consider the question posed by Small as to the status of the time-points in the fragment which, I contend, Nietzsche does not hold to be empirical. Thirdly, I discuss a central point of debate between Whitlock, Small and Ansell-Pearson: the extent of the analogy between Roger Boscovich and Nietzsche. I submit in conclusion that the connections between the two have been over-emphasised in the context of the 1873 fragment, and that this relationship cannot yield a complete account of Nietzsche’s approach. (shrink)

This dissertation is an attempt to defend two founders of quantum theories, Niels Bohr and Wolfgang Pauli, against various anti-realist readings. These readings claim that Bohr's and Pauli's interpretations of quantum mechanics are based on a denial of the reality of the external world, and that their debates with Albert Einstein are over realism. But I argue that the differences between their views and Einstein's are neither about the reality of the external world, nor about the reality of theoretical entities (...) in general. Rather, the differences are about the reality of this or that particular theoretical entity and the viability of this or that particular idea of physics. Although in 1972 Clifford Hooker gave an adequate and then-comprehensive discussion of Bohr's ideas countering anti-realist readings, his work has been forgotten by a new generation of interpreters such as Arthur Fine and Mara Beller who read anti-realism into Bohr's ideas. One aim of this dissertation is to revive Hooker's defense of Bohr and to counter such misreadings. ;A second contribution this dissertation makes consists in an elaboration of Pauli's views. Pauli wrote extensively on many philosophical issues, and made important contributions to the debates between Einstein, Bohr and himself. However, his views are unfairly ignored by most philosophers of quantum mechanics, and when considered, are at best quickly dismissed as anti-realist. In my dissertation, I discuss Pauli's rich ideas on physics and philosophy and show that Pauli is not an anti-realist. In particular, Bohr's and Pauli's views on a problem introduced in a paper by Einstein, Boris Podolsky, and Nathan Rosen are discussed in detail. The close examination of Bohr's and Pauli's views also shows that there are significant differences between them, suggesting the inadequacy of the generic term "the Copenhagen school," often used to refer indiscriminately to their views. Through my studies of Bohr's and Pauli's ideas, I hope to show the inadequacy of using metaphysical doctrines such as realism and anti-realism to gain either a full understanding of general problems in physics, or an understanding of the ideas of these working physicists in particular. (shrink)

Reasoning without experience is very slippery. A man may puzzle me by arguents [sic] … but I’le beleive my ey experience ↓my eyes.↓ernan mcmullin once remarked that, although the “avowedly tentative form” of the Queries “marks them off from the rest of Newton’s published work,” they are “the most significant source, perhaps, for the most general categories of matter and action that informed his research.”2 The Queries (or Quaestiones), which Newton inserted at the very end of the third book (...) of the Opticks3 or its Latin rendition, Optice,4 constitute that part of his optical magnum opus which he reworked and augmented the most—especially between 1704 and 1717. While the main text of the Opticks itself underwent .. (shrink)

A well-known relativistic action at a distance interaction of two unequal masses is altered so as to yield purely Newtonian radial forces with fixed particle rest masses in the system center-of-momentum inertial frame. Although particle masses experience no kinematic mass increase in this frame, speeds are naturally restricted to less than the speed of light. We derive a relation between the center-of-momentum frame total Newtonian energy and the composite rest mass. In a new proper time quantum formalism, we (...) obtain an L2(R4 ⊗ R4, C) Hilbert space by varying individual particle rest masses. We propose the use of density operators, recognizing that the auxiliary proper time parameter is not an observable. The quantum formalism is applied to our altered version of the relativistic harmonic oscillator. Our generalized coherent states yield four-dimensional wave packets which follow the correct classical world lines. Appendices contain reviews of classical Hamiltonian reparametrization (incorporating our notion of manifest covariance), and a comparison of this work with the literature. (shrink)

In this paper I review the different opinions held by scientists and philosophers as regards the status of the action-at-a-distance concept within relativistic physics. It is shown that in spite of the fact that the prevailing opinion has been that special relativity precludes actions at a distance, some important physicists have continued employing that concept throughout the present century. The key to understand that “anomalous” behaviour lies, in fact, in the relationships existent between quantum and classical physics (...) (“inverse” principle of correspondence). (shrink)

In this paper and its sequel, I consider the significance of Jarrett’s and Shimony’s analyses of the so-called factorisability condition for clarifying the nature of quantum non-locality. In this paper, I focus on four types of non-locality: superluminal signalling, action-at-a-distance, non-separability and holism. In the second paper, I consider a fifth type of non-locality: superluminal causation according to ‘logically weak’ concepts of causation, where causal dependence requires neither action nor signalling. In this connection, I pay special attention (...) to the difficulties that superluminal causation raises in relativistic space–time. I conclude by evaluating the relevance of Jarrett’s and Shimony’s analyses for clarifying the question of the compatibility of quantum non-locality with relativity theory. My main conclusions are, first: these analyses are significant for clarifying the questions of superluminal signalling in quantum phenomena and for the compatibility of these phenomena with relativity. But, second, by contrast: these analyses are not very significant for the study of action-at-a distance, superluminal causation, non-separability and holism in quantum phenomena. (shrink)

Fifty years after the publication of Bell's theorem, there remains some controversy regarding what the theorem is telling us about quantum mechanics, and what the experimental violations of Bell inequalities are telling us about the world. This chapter represents my best attempt to be clear about what I think the lessons are. In brief: there is some sort of nonlocality inherent in any quantum theory, and, moreover, in any theory that reproduces, even approximately, the quantum probabilities for the outcomes of (...) experiments. But not all forms of nonlocality are the same; there is a distinction to be made between action at a distance and other forms of nonlocality, and I will argue that the nonlocality required to violate the Bell inequalities need not involve action at a distance. Furthermore, the distinction between forms of nonlocality makes a difference when it comes to compatibility with relativistic causal structure. (shrink)

In this paper and its sequel, I consider the significance of Jarrett’s and Shimony’s analyses of the so-called factorisability condition for clarifying the nature of quantum non-locality. In this paper, I focus on four types of non-locality: superluminal signalling, action-at-a-distance, non-separability and holism. In the second paper, I consider a fifth type of non-locality: superluminal causation according to ‘logically weak’ concepts of causation, where causal dependence requires neither action nor signalling. In this connection, I pay special attention (...) to the difficulties that superluminal causation raises in relativistic space–time. I conclude by evaluating the relevance of Jarrett’s and Shimony’s analyses for clarifying the question of the compatibility of quantum non-locality with relativity theory. My main conclusions are, first: these analyses are significant for clarifying the questions of superluminal signalling in quantum phenomena and for the compatibility of these phenomena with relativity. But, second, by contrast: these analyses are not very significant for the study of action-at-a distance, superluminal causation, non-separability and holism in quantum phenomena. (shrink)

Drawing on Earman’s definition of determinism and Lewis’ best systems account of laws, in What Makes Time Special? Craig Callender develops an account of time as ‘the strongest thing’. The characterisation of this account apparently assumes no action at a temporal distance, an assumption that also underlies Earman’s account of determinism. In this paper I show that there is a way to define determinism that allows worlds with action at a temporal distance to count as deterministic, (...) that action at a temporal distance is possible on a best systems account of laws, and hence that Callender need not make this assumption. (shrink)

Drawing on Earman’s definition of determinism and Lewis’ best systems account of laws, in What Makes Time Special? Craig Callender develops an account of time as ‘the strongest thing’. The characterisation of this account apparently assumes no action at a temporal distance, an assumption that also underlies Earman’s account of determinism. In this paper I show that there is a way to define determinism that allows worlds with action at a temporal distance to count as deterministic, (...) that action at a temporal distance is possible on a best systems account of laws, and hence that Callender need not make this assumption. (shrink)

Assuming that future experiments confirm Aspect's discovery of nonlocal interactions between quantum pairs of correlated particles, we analyze the constraints imposed by the EPR reasoning on the said interactions. It is then shown that the nonlocal relativistic quantum potential approach plainly satisfies the Einstein causality criteria as well as the energy-momentum conservation in individual microprocesses. Furthermore, this approach bypasses a new causal paradox for timelike separated EPR measurements deduced by Sutherland in the frame of an approach by means of space-time (...) zigzags with advanced potentials. It is finally demonstrated that this inherent quantum causal direct interaction establishes permanent EPR correlations which are always restricted to spacelike separations and are instantaneous only in the center-of-mass rest frame of the two-particle system. (shrink)

This history of physics focuses on the question, "How do bodies act on one another across space?" The variety of answers illustrates the function of fundamental analogies or models in physics as well as the role of so-called unobservable entities. Forces and Fields presents an in-depth look at the science of ancient Greece, and it examines the influence of antique philosophy on seventeenth-century thought. Additional topics embrace many elements of modern physics--the empirical basis of quantum mechanics, wave-particle duality and the (...) uncertainty principle, and the action-at-a-distance theory of Wheeler and Feynman. 1961 ed. (shrink)

This paper is in three sections. The first establishes that Newton, in spite of a well-known passage in a letter to Richard Bentley of 1692, did believe in action at a distance. Many readers may see this merely as an act of supererogation, since it is so patently obvious that he did. However, there has been a long history among Newton scholars of allowing the letter to Bentley to over-ride all of Newton’s other pronouncements in favour of (...) class='Hi'>action at a distance, with devastating effects on our understanding of related aspects of his physics and his theology. Furthermore, this misconceived scholarly endeavour shows no sign of abating. The second section then offers a historical reconstruction, based on Newton’s writings, of how, when and why he began to accept actions at a distance and make them one of the cornerstones of his physics. Finally, using this chronological account of Newton’s use of actions at a distance, the paper re-assesses the claims of B. J. T. Dobbs that Newton’s important manuscript, De gravitatione et aequipondio fluidorum, was written, not in the late 1660s or early 1670s as was previously supposed, but during the composition of the Principia, in 1684 or 1685.Keywords: Isaac Newton; Action-at-a-distance; Gravity; Force; Aether; Attraction. (shrink)

In al-Sirr al-Maktūm, a magisterial work on astral magic, the twelfth century Persian philosopher-theologian Fakhr al-Dīn al-Rāzī formulated one of the most sophisticated theories of talismanic action at a distance ever produced in the Islamic world. Al-Rāzī deployed Avicennan psychology to explain how a practitioner’s soul might connect with the celestial spheres, the principles of sublunary change, and ‘blend’ their forces into a talismanic metal idol; then, performing a ritual mimetic of his intended effect, could direct these forces (...) to bring about his objective, from a distance, altering sublunary phenomena in accordance with his will. In constructing this theory, Rāzī drew on the psychologizing Avicennan accounts of thaumaturgy and veridical dreams, foregrounding what was common to both: the internal sense known as the wahm. (shrink)

Taking as its central question, "How do bodies act on one another across space?", this book traces the answers which have been given from the Pre-Socratics to current physical theory. The basic thought guiding the discussion is that the conceived mode of action between bodies is a general property exhibited by the model of a current physical theory. The study is rich in primary material, and carefully documented throughout; it fulfills a long-felt need for a thorough and careful treatment (...) of this subject.--B. J. H. (shrink)