The critical indices of the Quark-Gluon Bags with Surface Tension Model with tricritical endpoint

Details The critical indices of the Quark-Gluon Bags with Surface Tension Model with tricritical endpoint The critical indices of the Quark-Gluon Bags with Surface Tension Model with tricritical endpoint

2011-04-11

arxiv.org/abs/1104.1900v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 1 figure

Scientific paper

The critical indices \alpha', \beta, \gamma' and \delta of the Quark Gluon Bags with Surface Tension Model with the tricritical endpoint are calculated as functions of the usual parameters of this model and two newly introduces parameters (indices). They are compared with the critical exponents of other models. It is shown that for the newly introduced indices \chi = 0 and \xi^T < 1 there is a branch of solutions for which the critical exponents of the present model and the statistical multifragmentation model coincide, otherwise these models belong to different universality classes. It is shown that for realistic values of the parameter \varkappa the critical exponents \alpha', \beta, \gamma' and \delta of simple liquids and 3-dimensional Ising model can be only described by the branch of solutions in which all indices except for \alpha' correspond to their values within the statistical multifragmentation model. The scaling relations for the found critical exponents are verified and it is demonstrated that for the standard definition of the index \alpha' the Fisher and Griffiths scaling inequalities are not fulfilled for some values of the model parameters, whereas the Liberman scaling inequality is always obeyed. Although it is shown that the specially defined index \alpha'_s recovers the scaling relations, another possibility, an existence of the non-Fisher universality classes, is also discussed.

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