Systematic compactification of the two-channel Kondo model. II. Comparative study of scaling and universality

被引：0

作者：

Ljepoja, Aleksandar ^{[1
]}

Shah, Nayana ^{[2
]}

Bolech, C. J. ^{[1
,3
]}

机构：

[1] Univ Cincinnati, Dept Phys, Cincinnati, OH 45221 USA

[2] Dept Phys, Dept Phys, St. Louis, MO 63160 USA

[3] Harvard Smithsonian Ctr Astrophys, ITAMP, Cambridge, MA 02138 USA

来源：

PHYSICAL REVIEW B | 2024年 / 110卷 / 04期

关键词：

RENORMALIZATION-GROUP; FIXED-POINTS; FORMULATION; LAWS;

D O I：

10.1103/PhysRevB.110.045109

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Following up on the systematic compactification of the two-channel Kondo model [and its multichannel extensions; see Ljepoja et al., Phys. Rev. B 110, 045108 (2024)] and the demonstration of its validity over the past proposal of compactification, we resort to a study of scaling using Anderson's simple poor man's procedure to carry out a comparative study of these two and the original model. By doing so we unveil a universal agreement among the three models in how they flow upon scaling, and suggest the general limits of such a concordance. In this way we further elucidate the conditions under which the standard simplifications implicit in many bosonization-based mappings (particularly of quantum impurity models) can be used reliably, and when the consistent bosonization-debosonization approach is needed.

引用

页数：17