Theory of Spontaneous Symmetry Breaking and an Application to Superconductivity: Nambu-Goldstone and Higgs Excitation Modes. Communications in Computational Physics, [S. l.], v. 23, n. 2, p. 459–475, 2018. DOI: 10.4208/cicp.OA-2017-0057. Disponível em: https://www.global-sci.com/index.php/cicp/article/view/6526. Acesso em: 27 feb. 2026.