The paper defends the view that general relativity and teleparallel gravity are genuinely underdetermined alternatives, countering Knox's arguments that teleparallel gravity's ontology reduces to that of general relativity.
The local validity of special relativity from a scale-relative perspective
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abstract
Most contemporary physicists hold that the local validity of special relativity (SR) within general relativity (GR) is expressed by means of an interdependent cluster of mathematical concepts, one of which is the existence of normal coordinate systems. Nonetheless, there remains conceptual work to be done with regard to this `standard story' on the local validity of SR in (a) clarifying how a network of mathematical concepts is recruited in a particular modelling context in order to account for the local validity of SR within GR, and (b) highlighting the richness and subtlety of this mode of modelling, as well as the way in which it interacts with the concept of `approximate Killing symmetry'. With this paper, we carry out this work, thereby also defending the standard story from concerns recently voiced in the philosophy of physics literature.
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Is spacetime curved? Assessing the underdetermination of general relativity and teleparallel gravity
The paper defends the view that general relativity and teleparallel gravity are genuinely underdetermined alternatives, countering Knox's arguments that teleparallel gravity's ontology reduces to that of general relativity.