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Dynamics of entanglement for a two-parameter class of states in a qubit-qutrit system
We investigate the dynamics of entanglement for a two-parameter class of
states in a hybrid qubit-qutrit system under the influence of various
dissipative channels. Our results show that entanglement sudden death (ESD) is
a general phenomenon and it usually takes place in a qubit-qutrit system
interacting with various noisy channels, not only the case with dephasing and
depolarizing channels observed by others. ESD can only be avoided for some
initially entangled states under some particular noisy channels. Moreover, the
environment affects the entanglement and the coherence of the system in very
different ways.Comment: 9 pages, 6 figures, 1 table. A negligible error for type on Eq(7) is
correcte
A review of the open charm and open bottom systems
Since the discovery of the first charmed meson in 1976, many open-charm and
open-bottom hadrons were observed. In 2003 two narrow charm-strange states
and were discovered by the BaBar and CLEO
Collaborations, respectively. After that, more excited heavy hadrons were
reported. In this work, we review the experimental and theoretical progress in
this field.Comment: Review accepted by Reports on Progress in Physics, 161 pages, 53
figures, 23 tables, more references added and review on heavy baryons adde
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