Large N critical exponents for the chiral Heisenberg Gross-Neveu universality class

被引:41
作者
Gracey, J. A. [1 ]
机构
[1] Univ Liverpool, Dept Math Sci, Theoret Phys Div, POB 147, Liverpool L69 3BX, Merseyside, England
关键词
CONFORMAL BOOTSTRAP CALCULATION; 1/N EXPANSION; ARBITRARY DIMENSIONS; CRITICAL-BEHAVIOR; BETA-FUNCTION; MODEL; ETA; COMPUTATION; O(1/N2); POINT;
D O I
10.1103/PhysRevD.97.105009
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We compute the large N critical exponents eta, eta phi and 1/nu in d dimensions in the chiral Heisenberg Gross-Neveu model to several orders in powers of 1 /N. Forinstance, the large N conformal bootstrap method is used to determine eta at O(1/N-3)OwhiN the other exponents are computed to 0(1 /N-2).O Estimates of the exponents for a phase transition in graphene are given which are shown to be commensurate with other approaches. In particular the behavior of the exponents in 2 < d < 4 is in qualitative agreement with a functional renormalization group analysis. The epsilon expansion of each exponent near four dimensions is in exact agreement with recent four loop perturbation theory.
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页数:17
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