 "{\\text{KS}}",
                eph: "{\\text{e-ph}}",
                ee: "{\\text{e-e}}",
                phph: "{\\text{ph-ph}}",
                FM: "{\\text{FM}}",
                DW: "{\\text{DW}}",
                QP: "{\\text{QP}}",
                BZ: "{\\text{BZ}}",
                sign: "{\\text{sign}}",
                xc: "{\\text{xc}}",
                tchi: "{\\tilde\\chi}",
                // Symbols commonly used (k-points, eigenvalues ...)
                rr: "{\\bf r}",
                R