Title: A non-classical van der Waals loop: Collective variables method
Author(s):

	R.V. Romanik (Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine, 1 Svientsitskii Str., 79011 Lviv, Ukraine)
	M.P. Kozlovskii (Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine, 1 Svientsitskii Str., 79011 Lviv, Ukraine)

The equation of state is investigated for an Ising-like model in the framework of collective variables method. The peculiar feature of the theory is that a non-classical van der Waals loop is obtained. The results are compared with ones of a trigonometric parametric model, in terms of normalized magnetization, M, and field, H.

Key words: Van der Waals loop, non-classical critical behavior, scalar order parameter
PACS: 05.50.+q, 05.70.Ce, 64.60.F-, 75.10.Hk

Full text [pdf, ps]

<< List of papers