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Equation 144 · Part 1 · The Entry a Relabeling Cannot Write

Symbol Lambda

Λ\Lambda
Λ\Lambda

What this part means

a choice.

Its job in the formula

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

Where the article explains it

Unmapped, and this is the load-bearing distinction: Λ\Lambda is a choice.

The passage around this formula

…in its absence is meaningful only once that absence is named precisely — a missing bath Hamiltonian in one case, a missing timelike Killing vector in the other. Unmapped, and this is the load-bearing distinction: Λ\Lambda is a choice. A laboratory observer decides to stop tracking a bath, and a different observer, tracking more of it, gets a smaller or zero defect for the identical physical situation, exactly as the uncorrelated-bath limit above showed. The absence of a timelike Killing vector in an FLRW…

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Learn the underlying idea

A variable is a named place for a value. Its letter is a local label: x can mean position in one formula and a data point in another.

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Sources cited in the article section

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