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Title Statistical field theories deformed within different calculi
Authors Oliemskoi, Oleksandr Ivanovych
Borysov, Stanislav Sergeevich
Shuda, Iryna Oleksandrivna
Keywords deformation parameter
Kaniadakis distribution
Type Article
Date of Issue 2010
URI http://essuir.sumdu.edu.ua/handle/123456789/2746
Publisher The European Physical Journal B
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Citation Olemskoy, A.I. Statistical field theories deformed within different calculi [Текст] / A.I. Olemskoy, S.S. Borysov, I.A. Shuda // The European Physical Journal B 77. — 2010. — P. 219-231
Abstract Within the framework of basic-deformed and finite-difference calculi,as well as deformation procedures proposed by Tsallis, Abe, and Kaniadakis and generalized by Naudts, we develop field-theoretical schemes of statistically distributed fields. We construct a set of generating functionals and find their connection with corresponding correlators for basic-deformed,finite-difference,and Kaniadakis calculi. Moreover, we introduce pair of additive functionals, which expansions into deformed series yield both Green functions and their irreducible proper vertices. We find as well formal equations, governing by the generating functionals of systems which possess a symmetry with respect to a field variation and are subjected to an arbitrary constrain. Finally,we generalize field-theoretical schemes inherent in concrete calculi in the Naudts manner. From the physical point of view, we study dependences of both one-site partition function and variance of free fields on deformations. We show that within the basic-deformed statistics dependence of the specific partition function on deformation has in logarithmic axes symmetrical form with respect to maximum related to deformation absence; in case of the finite-deference statistics,the partition function takes non-deformed value; for the Kaniadakis statistics, curves of related dependences have convex symmetrical form at small curvatures of the effective action and concave form at large ones. We demonstrate that only moment of the second order of free fields takes non-zero values to be proportional to inverse curvature of effective action. Independence of the deformation parameter, the free field variance has linearly arising form for the basic-deformed distribution and increases non-linearly rapidly in case of the finite-difference statistics; for more complicated case of the Kaniadakis distribution, related dependence has double-well form. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/2746
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