Non-Markovian Dynamics of Quantum Discord

We evaluate the quantum discord dynamics of two qubits in independent and common non-Markovian environments. We compare the dynamics of entanglement with that of quantum discord. For independent reservoirs the quantum discord vanishes only at discrete instants whereas the entanglement can disappear during a finite time interval. For a common reservoir, quantum discord and entanglement can behave very differently with sudden birth of the former but not of the latter. Furthermore, in this case the quantum discord dynamics presents sudden changes in the derivative of its time evolution which is evidenced by the presence of kinks in its behavior at discrete instants of time.Comment: 6 pages, 4 figure

Fano resonances in plasmonic core-shell particles and the Purcell effect

Despite a long history, light scattering by particles with size comparable with the light wavelength still unveils surprising optical phenomena, and many of them are related to the Fano effect. Originally described in the context of atomic physics, the Fano resonance in light scattering arises from the interference between a narrow subradiant mode and a spectrally broad radiation line. Here, we present an overview of Fano resonances in coated spherical scatterers within the framework of the Lorenz-Mie theory. We briefly introduce the concept of conventional and unconventional Fano resonances in light scattering. These resonances are associated with the interference between electromagnetic modes excited in the particle with different or the same multipole moment, respectively. In addition, we investigate the modification of the spontaneous-emission rate of an optical emitter at the presence of a plasmonic nanoshell. This modification of decay rate due to electromagnetic environment is referred to as the Purcell effect. We analytically show that the Purcell factor related to a dipole emitter oriented orthogonal or tangential to the spherical surface can exhibit Fano or Lorentzian line shapes in the near field, respectively.Comment: 28 pages, 10 figures; invited book chapter to appear in "Fano Resonances in Optics and Microwaves: Physics and Application", Springer Series in Optical Sciences (2018), edited by E. O. Kamenetskii, A. Sadreev, and A. Miroshnichenk

Teor de lipídeos totais, colesterol e perfil de ácidos graxos na carne de cordeiros da raça santa Inês alimentados com diferentes níveis energéticos.

Resumo: O presente estudo objetivou avaliar a influência de rações com diferentes níveis de energia metabolizável sobre o teor de totais, colesterol e perfil de ácidos graxos no músculo longissimus dorsi de cordeiros Santa Inês. Foram utilizados 20 cordeiros, com idade e peso de 50 dias e 13,0 kg ± 0,56 kg, respectivamente, alimentados com rações contendo diferentes níveis energéticos: 2,08; 2,28; 2,47 e 2,69 Mcal/kgMS. As rações influenciaram os teores de totais, colesterol total e o perfil do ácido graxo cis 10-, heptadecanóico e eicosanotrienóico (P0,05). A manipulação dietética influencia o perfil lipídico no longissimus dorsi de cordeiros Santa Inês. [Total lipids, cholesterol and fatty acid profile of lamb meat in Santa Ines fed different levels of energy]. Abstract - This study evaluated the influence of rations with different levels of metabolizable energy on the content of total lipids, cholesterol and fatty acid profile of the longissimus dorsi of Santa Ines lambs. Twenty Santa Ines lambs were used, with age and body weight of 50 days and 13.0 kg ± 0.56 kg, respectively, fed rations with different energy evels: 2.08; 2.28; 2.47 e 2.69 Mcal/kgDM. The rations influenced the content of total ipids, cholesterol and fatty acid profile of cis 10 -, heptadecanoic and eicosanotrienoic P 0.05). The dietary manipulation influences the lipid profile in longissimus dorsi of Santa Ines lambs.Dissertação (Mestre em Zootecnia. Área de Concentração: Nutrição de Ruminantes) - Universidade Federal do Ceará, Fortaleza. Orientadora: Elzânia Sales Pereira; Co-orientador: Marco Aurélio Delmondes Bomfim, Embrapa Caprinos e Ovinos (CNPC); Co-orientadora: Patrícia Guimarães Pimentel

Isoflavona de Pueraria phaseoloides: efeitos alelopáticos sobre plantas daninhas.

PN-218