42,709 research outputs found
Photoionization of Xe 3d electrons in molecule Xe@C60: interplay of intra-doublet and confinement resonances
We demonstrate rather interesting manifestations of co-existence of resonance
features in characteristics of the photoionization of 3d-electrons in Xe@C60.
It is shown that the reflection of photoelectrons produced by the 3d Xe
photoionization affects greatly partial photoionization cross-sections of and
levels and respective angular anisotropy parameters, both dipole and non-dipole
adding to all of them additional maximums and minimums. The calculations are
performed treating the 3/2 and 5/2 electrons as electrons of different kinds
with their spins "up" and "down". The effect of C60 shell is accounted for in
the frame of the "orange" skin potential model.Comment: 13 pages, 12 figure
Entanglement of Solitons in the Frenkel-Kontorova Model
We investigate entanglement of solitons in the continuum-limit of the
nonlinear Frenkel-Kontorova chain. We find that the entanglement of solitons
manifests particle-like behavior as they are characterized by localization of
entanglement. The von-Neumann entropy of solitons mixes critical with
noncritical behaviors. Inside the core of the soliton the logarithmic increase
of the entropy is faster than the universal increase of a critical field,
whereas outside the core the entropy decreases and saturates the constant value
of the corresponding massive noncritical field. In addition, two solitons
manifest long-range entanglement that decreases with the separation of the
solitons more slowly than the universal decrease of the critical field.
Interestingly, in the noncritical regime of the Frenkel-Kontorova model,
entanglement can even increase with the separation of the solitons. We show
that most of the entanglement of the so-called internal modes of the solitons
is saturated by local degrees of freedom inside the core, and therefore we
suggest using the internal modes as carriers of quantum information.Comment: 16 pages, 22 figure
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