71.00.00 Electronic structure of bulk materials (see section 73 for electronic structure of surfaces, interfaces, lowdimensional structures, and nanomaterials; for electronic structure of superconductors, see 74.25.Jb)

71.10.w Theories and models of manyelectron systems
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71.15.m Methods of electronic structure calculations (see also 31.15.p Calculations and mathematical techniques in atomic and molecular physics)
(1)
 71.18.+y Fermi surface: calculations and measurements; effective mass, g factor
 71.20.b Electron density of states and band structure of crystalline solids
 71.22.+i Electronic structure of liquid metals and semiconductors and their alloys
 71.23.k Electronic structure of disordered solids
 71.27.+a Strongly correlated electron systems; heavy fermions
 71.28.+d Narrowband systems; intermediatevalence solids (for magnetic aspects, see 75.20.Hr and 75.30.Mb in magnetic properties and materials)
 71.30.+h Metalinsulator transitions and other electronic transitions
 71.35.y Excitons and related phenomena
 71.36.+c Polaritons (including photonphonon and photonmagnon interactions)
 71.38.k Polarons and electronphonon interactions (see also 63.20.K Phonon interactions in lattice dynamics)
 71.45.d Collective effects

71.55.i Impurity and defect levels
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 71.60.+z Positron states (for positron annihilation, see 78.70.Bj)
 71.70.d Level splitting and interactions (see also 73.20.r Surface and interface electron states; 75.30.Et Exchange and superexchange interactions)
 71.90.+q Other topics in electronic structure (restricted to new topics in section 71)