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Effective lagrangian for axial anomaly and its applications in Dirac and Weyl semimetals

A gauge invariant effective lagrangian for the fermion axial anomaly is constructed. The dynamical degree of freedom for fermion field is preserved. Using the anomaly lagrangian, the scattering cross section of pair production γγ → e(−)e(+) in Dirac or Weyl semimetal is computed. The result is compa...

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Detalles Bibliográficos
Autores principales: Chen, Chih-Yu, Hu, C. D., Lin, Yeu-Chung
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6062581/
https://www.ncbi.nlm.nih.gov/pubmed/30050051
http://dx.doi.org/10.1038/s41598-018-29676-0