Английская Википедия:Gaussian fixed point

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Версия от 17:23, 11 марта 2024; EducationBot (обсуждение | вклад) (Новая страница: «{{Английская Википедия/Панель перехода}} {{Short description|RG fixed point giving a free theory}} A '''Gaussian fixed point''' is a fixed point of the renormalization group flow which is noninteracting in the sense that it is described by a free field theory.<ref name="Zinn-Justin">{{cite journal |last1=Zinn-Justin |first1=Jean |title=Critical Phenomena: field theoretical approach |journ...»)
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Шаблон:Short description A Gaussian fixed point is a fixed point of the renormalization group flow which is noninteracting in the sense that it is described by a free field theory.[1] The word Gaussian comes from the fact that the probability distribution is Gaussian at the Gaussian fixed point. This means that Gaussian fixed points are exactly solvable (trivially solvable in fact). Slight deviations from the Gaussian fixed point can be described by perturbation theory.

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