Effect of strain and many-body corrections on the band inversions and topology of bismuth

The electronic band structure of Bi is calculated using state the art methods, including density functional theory and G$_0$W$_0$ quasiparticle approximations. delicate ordering states at L point Brillouin zone, which determines topological character bands, investigated in detail. effect on bands strain, changing structural parameters rhombohedral crystal structure, shown to be important determining this resulting character.