Zobrazeno 1 - 10
of 248
pro vyhledávání: '"OLIVEIRA, L. E."'
We describe electromagnetic propagation in a relativistic electron gas at finite temperatures and carrier densities. Using quantum electrodynamics at finite temperatures, we obtain electric and magnetic responses and general constitutive relations. R
Externí odkaz:
http://arxiv.org/abs/1711.07818
We investigate the electromagnetic response of a relativistic Fermi gas at finite temperatures. Our theoretical results are first-order in the fine-structure constant. The electromagnetic permittivity and permeability are introduced via general const
Externí odkaz:
http://arxiv.org/abs/1604.03420
Publikováno v:
Physical Review B 92, 235446 (2015)
A theoretical investigation on slow light propagation based on eletromagnetically induced transparency in a three-level quantum-dot system is performed including non-Markovian effects and correlated dephasing reservoirs. It is demonstraonated that th
Externí odkaz:
http://arxiv.org/abs/1601.01540
A theoretical study of the electronic properties of nanodisks and nanocones is presented within the framework of a tight-binding scheme. The electronic densities of states and absorption coefficients are calculated for such structures with different
Externí odkaz:
http://arxiv.org/abs/1302.6568
Light propagation through 1D disordered structures composed of alternating layers, with random thicknesses, of air and a dispersive metamaterial is theoretically investigated. Both normal and oblique incidences are considered. By means of numerical s
Externí odkaz:
http://arxiv.org/abs/1006.0013
Autor:
Reyes-Gomez, E., Bruno-Alfonso, A., Cavalcanti, S. B., de Carvalho, C. A. A., Oliveira, L. E.
We analyze one-dimensional photonic superlattices which alternate layers of air and a left-handed material. We assume Drude-type dispersive responses for the dielectric permittivity and magnetic permeability of the left-handed material. Maxwell's equ
Externí odkaz:
http://arxiv.org/abs/0907.1644
Autor:
Silva, T. I. S., de Goes, R. H. T. B., Cônsolo, N. R. B., Gandra, J. R., Osmari, M. P., Silva, C. C., Oliveira, L. E. F., Souza, T. M., Barbosa, L. C. G. S., Anschau, D. G., Silva, G. K. R., Lopes, L. B., Fernandes, J. W. S.
Publikováno v:
Tropical Animal Science Journal; Jun2024, Vol. 47 Issue 2, p225-234, 10p
Autor:
Mogilevtsev, D., Nisovtsev, A. P., Kilin, S., Cavalcanti, S. B., Brandi, H. S., Oliveira, L. E.
We propose a mechanism to explain the nature of the damping of Rabi oscillations with increasing driving-pulse area in localized semiconductor systems, and have suggested a general approach which describes a coherently driven two-level system interac
Externí odkaz:
http://arxiv.org/abs/0706.4372
We have performed ab initio calculations within the density-functional theory for Ga_{1-x}Mn_xAs diluted semiconductors. Total energy results unambiguously show that a quasi-localized down-spin hole, with strong p-like character, surrounds the fully
Externí odkaz:
http://arxiv.org/abs/cond-mat/0307714
Quantum confinement, magnetic-field effects, and laser coupling with the two low-lying states of electrons bound to donor impurities in semiconductors may be used to coherently manipulate the two-level donor system in order to establish the appropria
Externí odkaz:
http://arxiv.org/abs/cond-mat/0306182