▎ 摘　　要

The gyromagnetic factor is an important physical quantity relating the magnetic-dipole moment of a particle to its spin. The electron spin g-factor in vacuo is one of the best model-based theoretical predictions ever made, showing agreement with the measured value up to ten parts per trillion [J. Schwinger, Phys. Rev. 73, 416 (1948); R. S. Van Dyck, Jr. et al., Phys. Rev. Lett. 59, 26 (1987); D. Hanneke et al., Phys. Rev. Lett. 100, 120801 (2008); T. Aoyama et al., Phys. Rev. Lett. 109, 111807 (2012)]. However, for electrons in a material the g-factor is modified with respect to its value in vacuo because of environment interactions. Here, we show how interaction effects lead to the spin g-factor correction in graphene by considering the full electromagnetic interaction in the framework of pseudo-QED [A. Kovner et al., Phys. Rev. B 42, 4748 (1990); N. Dorey et al., Nucl. Phys. B 386, 614 (1992); S. Teber, Phys. Rev. D 86, 025005 (2012); 89, 067702 (2014); E. C. Marino, Nucl. Phys. B 408, 551 (1993)]. We compare our theoretical prediction with experiments performed on graphene deposited on SiO2 and SiC, and we find a very good agreement between them.