12,288 research outputs found
Erratum: Dynamics of the Bounds of Squared Concurrence [Phys. Rev. A 79, 032306 (2009)]
This is an erratum to our paper.Comment: a little different from the published versio
New Darboux Transformation for Hirota-Satsuma coupled KdV System
A new Darboux transformation is presented for the Hirota-Satsuma coupled KdV
system. It is shown that this Darboux transformation can be constructed by
means of two methods: Painlev\'{e} analysis and reduction of a binary Darboux
transformation. By iteration of the Darboux transformation, the Grammian type
solutions are found for the coupled KdV system.Comment: LaTeX 2.09, 10 page
The Dynamics of the Bounds of Squared Concurrence
We study the dynamics of upper and lower bounds of squared concurrence.Our
results are similar to that of Konard et al. and can help the estimation of
high-dimension bipartite entanglement in experiments.Comment: 5 pages, 2 figures accepted by PR
Particle Entanglement in Rotating Gases
In this paper, we investigate the particle entanglement in 2D
weakly-interacting rotating Bose and Fermi gases. We find that both particle
localization and vortex localization can be indicated by particle entanglement.
We also use particle entanglement to show the occurrence of edge reconstruction
of rotating fermions. The different properties of condensate phase and vortex
liquid phase of bosons can be reflected by particle entanglement and in vortex
liquid phase we construct a trial wave function in the viewpoint of
entanglement to relate the ground state with quantum Hall state. Finally, the
relation between particle entanglement and interaction strength is studied.Comment: 7 pages, 9 figure
Probing dark matter particles at CEPC
We investigate the capability of the future electron collider CEPC in probing
the parameter space of several dark matter models, including millicharged dark
matter models, portal dark matter models, and effective field theory dark
matter models. In our analysis, the monophoton final state is used as the
primary channel to detect dark matter models at CEPC. To maximize the signal to
background significance, we study the energy and angular distributions of the
monophoton channel arising from dark matter models and from the standard model
to design a set of detector cuts. For the portal dark matter, we also
analyze the boson visible decay channel which is found to be complementary
to the monophoton channel in certain parameter space. The CEPC reach in the
parameter space of dark matter models is also put in comparison with Xenon1T.
We find that CEPC has the unprecedented sensitivity to certain parameter space
for the dark matter models considered; for example, CEPC can improve the limits
on millicharge by one order of magnitude than previous collider experiments for
GeV dark matter.Comment: 21 pages, 31 figure
The Decay of Multiqudit Entanglement
We investigate the decay of entanglement of a generalized N-qudit GHZ state,
with each qudit passing through independently in a quantum noisy channel. By
studying the time at which the entanglement completely vanishes and the time at
which the entanglement becomes arbitrarily small, we try to find how the
robustness of entanglement is influenced by dimension d and the number of
particles N.Comment: 4 pages, 3 figure
- β¦