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Equation 56 · Part 1 · The Bit Comes Back Before the Bearing

Symbol rho_rad

ρrad(g)\rho_{\mathrm{rad}}(g)
ρrad\rho_{\mathrm{rad}}

What this part means

rhoro_rad 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

rhoro_rad is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

The passage around this formula

…parties already share a suitable reference system, and cannot be worked around at all if they do not [ 11 ] . Absent such a shared frame, whatever the radiation reveals about g has to be extracted from the asymmetry of ρrad(g)\rho_{\mathrm{rad}}(g) relative to the group — a quantity that scrambling, left to its own devices, does not have any particular reason to concentrate quickly. The qubit’s logical content survives scrambling because nothing about being “close to |0⟩\rangle versus |1⟩\rangle ” is protected by a…

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A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.

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Sources cited in the surrounding passage

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