Differences and analogies between quantum chromodynamics and ferromagnets

14th Mexican Workshop on Particles and Fields

Hofmann, C.P.^1

Facultad de Ciencias, Universidad de Colima, Bernal Díaz del Castillo 340, Colima

C.P. 28045, Mexico^1

关键词: Chiral perturbation theory;    Effective Lagrangian;    Effective theories;    Ferromagnetic systems;    Low-energy physics;    Physics community;    Quantum chromodynamics;    Three space dimensions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/651/1/012012/pdf
DOI  :  10.1088/1742-6596/651/1/012012

来源: IOP

【 摘 要 】

The low-energy physics of quantum chromodynamics (QCD) and ferromagnets is dominated by Goldstone bosons. While the effective theory of QCD - chiral perturbation theory - is well established in the particle physics community, the systematic studies of ferromagnetic systems within the effective Lagrangian framework are not well-known. We analyze the lowtemperature properties of ferromagnets in one, two and three space dimensions up to three-loop order in the effective expansion, i.e., beyond the accuracy of any previous results obtained with conventional condensed matter methods. In particular, in the nonrelativistic domain, the effective method perfectly works in one space dimension.