6,850 research outputs found
Plasma levels of Human Granulocytic Elastase-alpha-Proteinase Inhibitor Complex (E-alpha1PI) in Leukemia
Time-delayed feedback in neurosystems
The influence of time delay in systems of two coupled excitable neurons is
studied in the framework of the FitzHugh-Nagumo model. Time-delay can occur in
the coupling between neurons or in a self-feedback loop. The stochastic
synchronization of instantaneously coupled neurons under the influence of white
noise can be deliberately controlled by local time-delayed feedback. By
appropriate choice of the delay time synchronization can be either enhanced or
suppressed. In delay-coupled neurons, antiphase oscillations can be induced for
sufficiently large delay and coupling strength. The additional application of
time-delayed self-feedback leads to complex scenarios of synchronized in-phase
or antiphase oscillations, bursting patterns, or amplitude death.Comment: 13 pages, 13 figure
Hyperon forward spin polarizability gamma0 in baryon chiral perturbation theory
We present the calculation of the hyperon forward spin polarizability gamma0
using manifestly Lorentz covariant baryon chiral perturbation theory including
the intermediate contribution of the spin 3/2 states. As at the considered
order the extraction of gamma0 is a pure prediction of chiral perturbation
theory, the obtained values are a good test for this theory. After including
explicitly the decuplet states, our SU(2) results have a very good agreement
with the experimental data and we extend our framework to SU(3) to give
predictions to the hyperons' gamma0 values. Prominent are the Sigma^- and Xi^-
baryons as their photon transition to the decuplet is forbidden in SU(3)
symmetry and therefore they are not sensitive to the explicit inclusion of the
decuplet in the theory
Dirk van Hulle. Modern Manuscripts: The Extended Mind and Creative Undoing from Darwin to Beckett and Beyond. London: Bloomsbury, 2014. xiii + 271 pp.
Review of Dirk van Hulle. Modern Manuscripts: The Extended Mind and Creative Undoing from Darwin to Beckett and Beyond. London: Bloomsbury, 2014. xiii + 271 pp
Sara J. Brenneis. Genre Fusion: A New Approach to History, Fiction, and Memory in Contemporary Spain. West Lafayette, Indiana: Purdue UP, 2014. viii + 241 pp.
Review of Sara J. Brenneis. Genre Fusion: A New Approach to History, Fiction, and Memory in Contemporary Spain. West Lafayette, Indiana: Purdue UP, 2014. viii + 241 pp
A large Muon Electric Dipole Moment from Flavor?
We study the prospects and opportunities of a large muon electric dipole
moment (EDM) of the order (10^{-24} - 10^{-22}) ecm. We investigate how natural
such a value is within the general minimal supersymmetric extension of the
Standard Model with CP violation from lepton flavor violation in view of the
experimental constraints. In models with hybrid gauge-gravity mediated
supersymmetry breaking a large muon EDM is indicative for the structure of
flavor breaking at the Planck scale, and points towards a high messenger scale.Comment: 12 pages, 12 figures. v3: References and Eq 28 fixed; conclusions
unchange
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