Equation 89 · Part 1 · The Bit Comes Back Before the Bearing
Symbol epsilon
What this part means
epsilon is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Its job in the formula
epsilon 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 epsilon→Article meaning
The passage around this formula
…hand-computable corroboration of the folklore “each extra collected qubit roughly halves what is left to recover,” not a re-derivation of Hayden and Preskill’s original bound, and it is why depends on only logarithmically: driving from 10^{-1} to 10^{-9} costs on the order of thirty extra qubits of radiation, a negligible addition to for any astrophysically sized hole. None of this requires the hole’s dynamics to be literally Haar-random for an unbounded time; Harrow and…
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Sources cited in the surrounding passage
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