Equation 5 · Part 1 · No Particle Without a Cosigner

Symbol k_B

k_B T_U = \hbar a / (2\pi c)

k_B

What this part means

the temperature.

Its job in the formula

$k_B$ is part of the quantity the equation computes from the expression on the right.

Full expressionSymbol k_BArticle meaning

Where the article explains it

Unruh completed the argument with a model of the measuring device itself, not just the modes: a idealized two-level system, linearly coupled to the field along its own worldline, responds to whatever the field is doing along that specific worldline, and along a uniformly accelerated worldline in the ordinary vacuum it responds exactly as though bathed in real thermal radiation at temperature $k_B$ $T_U$ = $\hbar$ a / (2 $\pi$ c) [ 1 ] .

The passage around this formula

…responds to whatever the field is doing along that specific worldline, and along a uniformly accelerated worldline in the ordinary vacuum it responds exactly as though bathed in real thermal radiation at temperature $k_B$ $T_U$ = $\hbar$ a / (2 $\pi$ c) [ 1 ] . None of this is proposed here. All of it is the baseline the rest of this article stands on.

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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.

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Sources cited in the surrounding passage

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