title: Features of the Generalized Dynamics of Quasiparticles in Graphene.
abstract: The general dynamic properties of the electron, as quasiparticle in conduction band of graphene, were analyzed. It is shown that in graphene, these properties essentially differ from similar base properties for crystals with a simple lattice, despite insignificant, on the first sight, difference of dispersion law ε(p). Primarily, crystals with an elementary cell of arbitrary complexity of structure were considered. The obtained general relations were applied further to graphene. Herewith two-dimensional lattice of graphene has been considered as consisting of elementary cells with two atoms. Typically, graphene is considered as crystals consisting of two simple nested sublattices. It has been shown that both considerations lead to the analogous basic results. On the basis of obtained wave Hamiltonian, all the dynamic characteristics of the injected electron, considered as a quasiparticle, were found: speed, tensor of effective dynamic mass, and wave Lagrangian. Also, for some physically actual situations, the dynamic characteristics of an alternative description have been found: a mechanical momentum pm, mechanical Hamiltonian, and mechanical Lagrangian. For these situations, a generalized Louis de Broglie relationship between mechanical pmand wave p momenta was found also.
authors.affiliation: Department of Theoretical Physics, Faculty of Physics, Taras Shevchenko National University of Kyiv, Volodymyrska Street, 64/13, Kyiv, 01601, Ukraine.
authors.forename: Anatol D
authors.initials: AD
authors.lastname: Suprun
authors.affiliation: Department of Theoretical Physics, Faculty of Physics, Taras Shevchenko National University of Kyiv, Volodymyrska Street, 64/13, Kyiv, 01601, Ukraine. LShmel@univ.kiev.ua.
authors.forename: Liudmyla V
authors.initials: LV
authors.lastname: Shmeleva
keywords: Dispersion law; Effective mass; Graphene; Hamiltonian; Lagrangian; Momentum; Velocity