50 years of Yukhnovskii's critical point theory: its place in the constant flow of theoretical physics.

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Bibliographic Details
Title:	50 years of Yukhnovskii's critical point theory: its place in the constant flow of theoretical physics.
Alternate Title:	50 рокiв теорiї Юхновського про критичну точку: її мiсце у постiйнiй течiї теоретичної фiзики
Authors:	Kozitsky, Yu.¹
Source:	Condensed Matter Physics. 2025, Vol. 28 Issue 4, p1-11. 11p.
Subjects:	Ising model, Statistical physics, Quantum field theory, Phase transitions, Mathematical variables, Mathematical physics, Physicists
Abstract:	Half a century ago, Ihor Yukhnovskii elaborated a method of studying the critical point of the three-dimensional Ising model based on a layer-by-layer integration in the space of collective variables. His method was an alternative to that based on the 𝜀-expansion for which K. G. Wilson was awarded the Nobel Prize in Physics in 1982. However, Yukhnovskii's technique, which yielded similar results, provided even deeper insight into the nature of this phenomenon. At that time, we, professor's students, saw only this aspect of his theory. Later, I realized that the mentioned Yukhnovskii's work naturally fits into a more general context of the turbulent development of quantum field theory and statistical physics in the last quarter of the twentieth century. The aim of the present article is to look at the main aspects and the impact of Yukhnovskii's theory from this perspective. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

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Abstract:	Half a century ago, Ihor Yukhnovskii elaborated a method of studying the critical point of the three-dimensional Ising model based on a layer-by-layer integration in the space of collective variables. His method was an alternative to that based on the 𝜀-expansion for which K. G. Wilson was awarded the Nobel Prize in Physics in 1982. However, Yukhnovskii's technique, which yielded similar results, provided even deeper insight into the nature of this phenomenon. At that time, we, professor's students, saw only this aspect of his theory. Later, I realized that the mentioned Yukhnovskii's work naturally fits into a more general context of the turbulent development of quantum field theory and statistical physics in the last quarter of the twentieth century. The aim of the present article is to look at the main aspects and the impact of Yukhnovskii's theory from this perspective. [ABSTRACT FROM AUTHOR]
ISSN:	1607324X
DOI:	10.5488/CMP.28.43501