The Minkowski limit of pure R² gravity is reinterpreted as a thermal singularity via scalar-tensor to Eckart fluid analogy, showing infinite departure from GR rather than recovery.
Relativistic fluid dy- namics: Physics for many different scales,
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Generic Maxwell fields are obtained as the sum of two pull-backs from independent matter spaces, recovering the F wedge F invariant as mutual helicity between the two sectors.
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New interpretation of the Minkowski limit of $R^2$ gravity
The Minkowski limit of pure R² gravity is reinterpreted as a thermal singularity via scalar-tensor to Eckart fluid analogy, showing infinite departure from GR rather than recovery.
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Electromagnetism from two matter spaces: mutual helicity and the nondegenerate completion
Generic Maxwell fields are obtained as the sum of two pull-backs from independent matter spaces, recovering the F wedge F invariant as mutual helicity between the two sectors.