We study the resistivity of three-dimensional semimetals with linear dispersion in presence on-site electron-electron interaction. The well-known quadratic temperature dependence conventional metals is turned into an unusual $T^6$-behavior. An analogous change affects thermal transport, preserving linearity $T$ ratio between and electrical conductivities. These results hold from weak coupling u...

We present a comprehensive relativistic quantum-mechanical theory for interaction of free electron with bound in model, where the is represented as finite-size quantum wave packet (QEW) and modeled by two-level system (TLS). The analysis reveals wave-particle duality nature QEW, delineating point-particle-like wavelike regimes manifesting physical reality function dimensions when interacting ma...