Symbol in context

$\xi$

This entry links every published equation using this exact notation. Its meaning may change between equations.

Meanings in context

Article-grounded definition

constants fixed by the microscopic couplings.

\xi

constants fixed by the microscopic couplings.

\xi \sim |t|^{-\nu}, \qquad t = \frac{T - T_{\mathrm{c}}}{T_{\mathrm{c}}}

This equation states an equality: the expressions on both sides have the same value under the article’s assumptions.