1,471,828 research outputs found
Neuro-memristive Circuits for Edge Computing: A review
The volume, veracity, variability, and velocity of data produced from the
ever-increasing network of sensors connected to Internet pose challenges for
power management, scalability, and sustainability of cloud computing
infrastructure. Increasing the data processing capability of edge computing
devices at lower power requirements can reduce several overheads for cloud
computing solutions. This paper provides the review of neuromorphic
CMOS-memristive architectures that can be integrated into edge computing
devices. We discuss why the neuromorphic architectures are useful for edge
devices and show the advantages, drawbacks and open problems in the field of
neuro-memristive circuits for edge computing
Edge Current due to Majorana Fermions in Superfluid He A- and B-Phases
We propose a method utilizing edge current to observe Majorana fermions in
the surface Andreev bound state for the superfluid He A- and B-phases. The
proposal is based on self-consistent analytic solutions of quasi-classical
Green's function with an edge. The local density of states and edge mass
current in the A-phase or edge spin current in the B-phase can be obtained from
these solutions. The edge current carried by the Majorana fermions is partially
cancelled by quasiparticles (QPs) in the continuum state outside the superfluid
gap. QPs contributing to the edge current in the continuum state are
distributed in energy even away from the superfluid gap. The effect of Majorana
fermions emerges in the depletion of the edge current by temperature within a
low-temperature range. The observations that the reduction in the mass current
is changed by -power in the A-phase and the reduction in the spin current
is changed by -power in the B-phase establish the existence of Majorana
fermions. We also point out another possibility for observing Majorana fermions
by controlling surface roughness.Comment: 13 pages, 4 figures, published versio
Edge Modes in the Hierarchical Fractional Quantum Hall Liquids with Coulomb Interaction
Edge modes are studied for the hierarchical fractional quantum Hall liquids
(FQHL) by treating the edge and bulk in a unified fashion. Within the RPA
treatment of the composite boson effective theory with Coulomb interaction, one
edge magneto-plasmon is shown to be the eigen-mode of the system. This mode
decays algebraically perpendicular to the edge. All the other modes decay
faster than power-law, and correspond to the neutral modes. However these
neutral modes generally couple with the electromagnetic field within the
magnetic length from the edge. The time-of-flight experiment in the
FQHL is discussed in terms of these results.Comment: 5 pages, LaTe
Power Balance in the ITER Plasma and Divertor
It is planned to use atomic processes to spread out most of the heating power
over the first wall and side walls to reduce the heat loads on the plasma
facing components in ITER to ~ 50 MW. Calculations indicate that there will be
100 MW in bremstrahlung radiation from the plasma center, 50 MW of radiation
from the plasma edge inside the separatrix and 100 MW of radiation from the
scrape-off layer and divertor plasma, leaving 50 MW of power to be deposited on
the divertor plates. The radiation losses are enhanced by the injection of
impurities such as Neon or Argon at acceptably low levels (~0.1 % Argon, etc.)Comment: Preprint for the Plasma Edge Theory Conference, Monterey, Dec.4-6,
1995, 5 pages, gzipped postscrip
Coulomb drag between helical edge states
We theoretically investigate the Coulomb drag between the edge states of two
quantum spin Hall systems. Using an interacting theory of the one-dimensional
helical edge modes, we show that the drag vanishes at second order in the
inter-edge interaction, where it is typically finite in other systems, due to
the absence of backscattering within the edges. However, in the presence of a
small external magnetic field the drag is finite and scales as the fourth power
of the magnetic field, a behavior that sharply distinguishes it from other
systems. We obtain the temperature dependence of the drag for regimes of both
linear and quadratic edge dispersion in the presence of a finite field.Comment: 4 pages, 3 figure
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