Symbol D_rm det
m det is part of the quantity the equation computes from the expression on the right.
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Why this formula appears here
Two worldlines held at accelerations and therefore differ only by which Planck-shaped curve their normalized spectrum traces, and identical accelerations trivially return =0 — the reparametrization check every metric has to pass, satisfied here for the most literal reason available: identical trajectories are, in fact, identical.
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Equation 54 · Evolutionary Physics
No Particle Without a Cosigner
This equation states an equality: the expressions on both sides have the same value under the article’s assumptions.
Two worldlines held at accelerations and therefore differ only by which Planck-shaped curve their normalized spectrum traces, and identical accelerations trivially return =0 — the reparametrization check every metric has to pass, satisfied here for the most literal reason available: identical trajectories are, in fact, identical.
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