Equation 27 · Part 1 · The Corner of the Equivalence Principle No Experiment Has Touched
Symbol hateta_sup
What this part means
the sits adjacent to.
Its job in the formula
hatetup is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Full expression→Symbol hateta_sup→Article meaning
Where the article explains it
Chris Overstreet and colleagues’ gravitational Aharonov-Bohm measurement, using a kilogram-scale source mass to imprint a phase on a single atom’s spatially superposed wavefunction, sits adjacent to , probing how the atom’s own extended quantum state couples to the field rather than treating the interferometer arms as two independent classical trajectories [ 10 ] .
The passage around this formula
…at the 10^{-15} level by MICROSCOPE, constrained by every dual-species and clock test in the list, constrained at the low- 10^{-9} level by Rosi and colleagues’ internal-superposition test, constrained by Overstreet and colleagues’ gravitational Aharonov-Bohm result. The fifth column, , has nothing in it — not a weak bound, not a preliminary number, nothing. The paper’s proposition on this point is not merely that the entangled component happens to be…
Learn the underlying idea
A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.
Open the illustrated subscripts: which member of a family? guide →
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Sources cited in the article section
- [5] Quantum Test of the Universality of Free Fall ↗
- [6] Quantum test of the Universality of Free Fall using rubidium and potassium ↗
- [4] Atom-Interferometric Test of the Equivalence Principle at the 10⁻¹² Level ↗
- [7] Quantum test of the equivalence principle for atoms in superpositions of internal energy eigenstates ↗
- [10] Observation of a gravitational Aharonov-Bohm effect ↗
These citations provide research context; check each source for the exact claim it supports.