Equation 32 · Part 1 · The Clock That Comes Back Wrong by Exactly Its Mass

Symbol Y

Y=-i\mathbf v\cdot\mathbf K/\hbar

Y

What this part means

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

Its job in the formula

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

Full expressionSymbol YArticle meaning

The passage around this formula

That triviality is what makes the loop phase exact rather than approximate. Write X=-i $\mathbf b$ $\cdot$ $\mathbf P$ / $\hbar$ and Y=-i $\mathbf v$ $\cdot$ $\mathbf K$ / $\hbar$ . Their commutator is

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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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