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Dennis Lehmkuhl
Universität Bonn
  1.  33
    Two Miracles of General Relativity.James Read, Harvey R. Brown & Dennis Lehmkuhl - 2018 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 64:14-25.
    We approach the physics of \emph{minimal coupling} in general relativity, demonstrating that in certain circumstances this leads to violations of the \emph{strong equivalence principle}, which states that, in general relativity, the dynamical laws of special relativity can be recovered at a point. We then assess the consequences of this result for the \emph{dynamical perspective on relativity}, finding that potential difficulties presented by such apparent violations of the strong equivalence principle can be overcome. Next, we draw upon our discussion of the (...)
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  2.  88
    Why Einstein Did Not Believe That General Relativity Geometrizes Gravity.Dennis Lehmkuhl - unknown
    I argue that, contrary to folklore, Einstein never really cared for geometrizing the gravitational or the electromagnetic field; indeed, he thought that the very statement that General Relativity geometrizes gravity “is not saying anything at all”. Instead, I shall show that Einstein saw the “unification” of inertia and gravity as one of the major achievements of General Relativity. Interestingly, Einstein did not locate this unification in the field equations but in his interpretation of the geodesic equation, the law of motion (...)
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  3. The Metaphysics of Super‐Substantivalism.Dennis Lehmkuhl - 2018 - Noûs 52 (1):24-46.
    Recent decades have seen a revived interest in super-substantivalism, the idea that spacetime is the only fundamental substance and matter some kind of aspect, property or consequence of spacetime structure. However, the metaphysical debate so far has misidentified a particular variant of super-substantivalism with the position per se. I distinguish between a super-substantival core commitment and different ways of fleshing it out. I then investigate how general relativity and alternative spacetime theories square with the different variants of super-substantivalism.
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  4.  63
    Einstein, the Reality of Space, and the Action-Reaction Principle.Dennis Lehmkuhl, P. Ghose & Harvey Brown - unknown
    Einstein regarded as one of the triumphs of his 1915 theory of gravity - the general theory of relativity - that it vindicated the action-reaction principle, while Newtonian mechanics as well as his 1905 special theory of relativity supposedly violated it. In this paper we examine why Einstein came to emphasise this position several years after the development of general relativity. Several key considerations are relevant to the story: the connection Einstein originally saw between Mach's analysis of inertia and both (...)
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  5.  92
    Mass‐Energy‐Momentum: Only There Because of Spacetime.Dennis Lehmkuhl - 2011 - British Journal for the Philosophy of Science 62 (3):453-488.
    I describe how relativistic field theory generalizes the paradigm property of material systems, the possession of mass, to the requirement that they have a mass–energy–momentum density tensor T µ associated with them. I argue that T µ does not represent an intrinsic property of matter. For it will become evident that the definition of T µ depends on the metric field g µ in a variety of ways. Accordingly, since g µ represents the geometry of spacetime itself, the properties of (...)
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  6. Towards a Theory of Spacetime Theories.Dennis Lehmkuhl, Gregor Schiemann & Erhard Scholz (eds.) - 2017 - Birkhauser.
    This contributed volume is the result of a July 2010 workshop at the University of Wuppertal Interdisciplinary Centre for Science and Technology Studies which brought together world-wide experts from physics, philosophy and history, in order to address a set of questions first posed in the 1950s: How do we compare spacetime theories? How do we judge, objectively, which is the “best” theory? Is there even a unique answer to this question? -/- The goal of the workshop, and of this book, (...)
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  7.  11
    Literal Versus Careful Interpretations of Scientific Theories: The Vacuum Approach to the Problem of Motion in General Relativity.Dennis Lehmkuhl - 2017 - Philosophy of Science 84 (5):1202-1214.
    The problem of motion in general relativity is about how exactly the gravitational field equations, the Einstein equations, are related to the equations of motion of material bodies subject to gravitational fields. This article compares two approaches to derive the geodesic motion of matter from the field equations: the ‘T approach’ and the ‘vacuum approach’. The latter approach has been dismissed by philosophers of physics because it apparently represents material bodies by singularities. I argue that a careful interpretation of the (...)
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  8.  18
    General Relativity as a Hybrid Theory: The Genesis of Einstein's Work on the Problem of Motion.Dennis Lehmkuhl - 2019 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 67:176-190.
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  9.  43
    On Time in Spacetime.Dennis Lehmkuhl - 2012 - Philosophia Naturalis 49 (2):225-237.
    It is often claimed that relativity theory falls short of giving an account of 'the flow of time' and 'the arrow of time'. Some claim that hence either one or both of these concepts do not correspond to objective reality, others infer that relativity theory is wrongfully 'spatialising' time. I investigate of our normal conception of time is enduring in relativity, even in the absence of a clear representation of flow. It is shown that the conformal structure of spacetime allows (...)
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  10.  56
    Particle Physics After the Higgs Discovery: Philosophical Perspectives.Simon Friederich & Dennis Lehmkuhl - 2015 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 51:69-70.
  11.  26
    Matter (s) in Relativity Theory.Dennis Lehmkuhl - 2010 - In Mauricio Suarez, Mauro Dorato & Miklos Redei (eds.), EPSA Philosophical Issues in the Sciences · Launch of the European Philosophy of Science Association. Springer. pp. 163--174.
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