Geração e difusão de inovações agropecuárias no Brasil: a experiência da EMBRAPA com ênfase na pequena produção.

Missao institucional e prioridades da EMBRAPA; Modelo institucional/articulacao pesquisa x extensao rural; O enfoque da EMBRAPA em relacao ao pequeno produtor.bitstream/item/36480/1/Geracao-e-difusao-de-inovacoes.pd

Casimir Effect in the Rainbow Einstein's Universe

In the present paper we investigate the effects caused by the modification of the dispersion relation obtained by solving the Klein-Gordon equation in the closed Einstein's universe in the context of rainbow's gravity models. Thus, we analyse how the quantum vacuum fluctuations of the scalar field are modified when compared with the results obtained in the usual General Relativity scenario. The regularization, and consequently the renormalization, of the vacuum energy is performed adopting the Epstein-Hurwitz and Riemann's zeta functions.Comment: 15 pages, 1 figure. To appear in Europhysics Letter