21,337 research outputs found
Editorial Comment on the Special Issue of "Information in Dynamical Systems and Complex Systems"
This special issue collects contributions from the participants of the
"Information in Dynamical Systems and Complex Systems" workshop, which cover a
wide range of important problems and new approaches that lie in the
intersection of information theory and dynamical systems. The contributions
include theoretical characterization and understanding of the different types
of information flow and causality in general stochastic processes, inference
and identification of coupling structure and parameters of system dynamics,
rigorous coarse-grain modeling of network dynamical systems, and exact
statistical testing of fundamental information-theoretic quantities such as the
mutual information. The collective efforts reported herein reflect a modern
perspective of the intimate connection between dynamical systems and
information flow, leading to the promise of better understanding and modeling
of natural complex systems and better/optimal design of engineering systems
Searching for BSM neutrino interactions in dark matter detectors
Neutrino interactions beyond the Standard Model (BSM) are theoretically well
motivated and have an important impact on the future precision measurement of
neutrino oscillation. In this work, we study the sensitivity of a
multi-ton-scale liquid Xenon dark matter detector equipped with an intense
radiative neutrino source to various BSM neutrino-electron interactions. We
consider the conventional Non-Standard Interactions (NSIs), other more
generalized four-fermion interactions including scalar and tensor forms, and
light-boson mediated interactions. The work shows that with realistic
experimental setups, one can achieve unprecedented sensitivity to these BSM
neutrino-electron interactions.Comment: fig. 7 added, matches the published versio
Atomic entanglement sudden death in a strongly driven cavity QED system
We study the entanglement dynamics of strongly driven atoms off-resonantly
coupled with cavity fields. We consider conditions characterized not only by
the atom-field coupling but also by the atom-field detuning. By studying two
different models within the framework of cavity QED, we show that the so-called
atomic entanglement sudden death (ESD) always occurs if the atom-field coupling
lager than the atom-field detuning, and is independent of the type of initial
atomic state
Quench Dynamics of Entanglement in an Opened Anisotropic Spin-1/2 Heisenberg Chain
The quantum entanglement dynamics of a one-dimensional spin-1/2 anisotropic
XXZ model is studied using the method of the adaptive time-dependent
density-matrix renormalization-group when two cases of quenches are performed
in the system. An anisotropic interaction quench and the maximum number of
domain walls of staggered magnetization quench are considered. The dynamics of
pairwise entanglement between the nearest two qubits in the spin chain is
investigated. The entanglement of the two-spin qubits can be created and
oscillates in both cases of the quench. The anisotropic interaction has a
strong influence on the oscillation frequency of entanglement.Comment: 13 pages, 4 figure
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