# Brazilian Journal of Physics

Brazilian Journal of Physics > 2014 > 44 > 1 > 119-124

Brazilian Journal of Physics > 2014 > 44 > 1 > 128-137

*Comp Phys*4:83, 1990). In order to show the effectiveness and versatility of the algorithm, we solve the scattering by Schwarzschild, standard acoustic, and charged black holes. We recover the partial and total absorption cross sections and, in the case of...

Brazilian Journal of Physics > 2014 > 44 > 1 > 8-18

Brazilian Journal of Physics > 2014 > 44 > 1 > 39-44

_{2}O film. The transformation process and mechanism were also analyzed in detail. Increasing the hydrogen partial pressure can accelerate the transformation of Ag

_{2}O to Ag and lower the critical transformation temperature of the film due to the enhanced hydrogen reduction and to both...

Brazilian Journal of Physics > 2014 > 44 > 1 > 55-63

*σ*R), measurements for about five nuclei in the range

^{12}C to

^{208}Pb at beam energies spanning 40–800 MeV have been analyzed in a systematic way by using the optical limit approximation of the Coulomb-modified Glauber multiple scattering theory. Two different phenomenological nuclear density distributions of the target nucleus in addition to the realistic one have...

Brazilian Journal of Physics > 2014 > 44 > 1 > 30-38

Brazilian Journal of Physics > 2014 > 44 > 1 > 45-54

_{ x }→ MgO

_{ x±1}transitions, and dependence...

Brazilian Journal of Physics > 2014 > 44 > 1 > 73-90

^{6}Li on

^{12}C,

^{58}Ni,

^{90}Zr, and

^{208}Pb targets at 600 MeV are analyzed via double-folding optical model potentials based on the S1Y effective nucleon–nucleon (NN) interaction and

*t*ρρ approximation. Information is provided, by single- and coupled-channel calculations, on the effect of breakup and its feedback on the elastic scattering of

^{6}Li ions. Experimental results...

Brazilian Journal of Physics > 2014 > 44 > 1 > 91-94

Brazilian Journal of Physics > 2014 > 44 > 1 > 138-153

Brazilian Journal of Physics > 2014 > 44 > 1 > 19-29

*qubits*evolving according to the double Jaynes–Cummings model. We show that the entanglement dynamics for the initial states |

*ψ*

_{0}〉 = cos

*α*| 10〉 + sin

*α*| 01〉 and |

*ϕ*

_{0}〉 = cos

*α*| 11〉 + sin

*α*| 00〉 cover three-dimensional surfaces in the diagram

*C*

_{ ij }×

*C*

_{ ik }×

*C*

_{ il }, where

*C*

_{ mn }stands for the concurrence between...

Brazilian Journal of Physics > 2014 > 44 > 1 > 95-101

Brazilian Journal of Physics > 2014 > 44 > 1 > 1-7

_{60}) and its hydroxyl derivatives (C

_{60}(OH)

_{n},

*n*= 4, 5, 6, 8, 12, and 16) with a lipid bilayer composed of dipalmitoylphosphatidylcholine molecules. It was found that the C

_{60}moves towards the center of the bilayer and laid between central and peripheral regions of the bilayer. The potential mean force...

Brazilian Journal of Physics > 2014 > 44 > 1 > 64-72

*σ*

_{3n },

*σ*

_{4n }, and

*σ*

_{5n }in the hot-fusion reactions

^{48}Ca+

^{242,244}Pu →

^{290,292}114

^{∗}over a wide range of compound-nucleus excitation energies ( E CN * = 34–53 MeV). We work with the dynamical cluster-decay model (DCM), with a single parameter, the neck-length parameter Δ

*R*. To calculate neutron-evaporation cross sections,...

Brazilian Journal of Physics > 2014 > 44 > 1 > 102-107

*p*-brane, in the presence of the linear dilaton, tachyon,

*U*(1) gauge field as well as constant antisymmetric

*B*-field backgrounds. The Noncommutativity parameter, open string metric, and some special cases will be studied. The Mode-dependent noncommutativity, inspired by the tachyon field, will be discussed in detail.

Brazilian Journal of Physics > 2014 > 44 > 1 > 154-188

Brazilian Journal of Physics > 2014 > 44 > 1 > 108-118

Brazilian Journal of Physics > 2014 > 44 > 2-3 > 233-239

Brazilian Journal of Physics > 2014 > 44 > 2-3 > 202-207