Os líquidos quânticos de spin estão entre as fases da matéria mais investigadas que se afastam do paradigma da quebra simultânea de simetria e da teoria líquido de Fermi. Neste trabalho, estudamos um modelo de Heisenberg ...

We study the electron-proton dispersion process; we start with the treatment of the classical dispersion. Subsequently we address the problem in quantum mechanics in terms of the factors of electrical and magnetic form. ...

Combining different crops in complex spatial and temporal arrangements can increase resource use efficiency and reduce negative environmental impacts in croplands. Simulation models are useful tools to explore new management ...