Work

Dynamic renormalization-group of a nonlocal ϕ 4 model and critical behavior of some doped uniaxial ferromagnets

Year: 2026

Type: article

Abstract: The critical behavior in the doped uniaxial systems depends upon the impurity concentration and is found to be nonuniversal. To model this behavior, we present a dynamic renormalization-group (RG) analysis at one-loop order for amodel with nonlocal interactions, characterized by the long-range exponent. RG flow equations and the associated fixed points are determined, whose stability depends on both the spatial dimensionand the exponentNumerical solutions show a linear shift of the fixed points as a function ofin three dimensions. Our calculations for the critical exponents anticipate the trend of the susceptibility exponentas observed in experiments on some doped uniaxial ferromagnets. We propose dynamic universality classes for these systems, which require experimental confirmation.

Source: Journal of Physics Condensed Matter

DOI: 10.1088/1361-648x/ae8232

Authors: Rohit Singh, Neeta Bidhoodi

Institution: University of Allahabad

Language: English

Topic: Theoretical and Computational Physics

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,325

Funders: Arthritis National Research Foundation, National Research Foundation, University of Allahabad, Science and Engineering Research Board