411 research outputs found
Adaptive Learning Method of Recurrent Temporal Deep Belief Network to Analyze Time Series Data
Deep Learning has the hierarchical network architecture to represent the
complicated features of input patterns. Such architecture is well known to
represent higher learning capability compared with some conventional models if
the best set of parameters in the optimal network structure is found. We have
been developing the adaptive learning method that can discover the optimal
network structure in Deep Belief Network (DBN). The learning method can
construct the network structure with the optimal number of hidden neurons in
each Restricted Boltzmann Machine and with the optimal number of layers in the
DBN during learning phase. The network structure of the learning method can be
self-organized according to given input patterns of big data set. In this
paper, we embed the adaptive learning method into the recurrent temporal RBM
and the self-generated layer into DBN. In order to verify the effectiveness of
our proposed method, the experimental results are higher classification
capability than the conventional methods in this paper.Comment: 8 pages, 9 figures. arXiv admin note: text overlap with
arXiv:1807.03487, arXiv:1807.0348
Magnetogenesis from a rotating scalar: \`a la scalar chiral magnetic effect
The chiral magnetic effect (CME) is a phenomenon in which an electric current
is induced parallel to an external magnetic field in the presence of chiral
asymmetry in a fermionic system. In this paper, we show that the electric
current induced by the dynamics of a pseudo-scalar field which anomalously
couples to electromagnetic fields can be interpreted as closely analogous to
the CME. In particular, the velocity of the pseudo-scalar field, which is the
phase of a complex scalar, indicates that the system carries a global U(1)
number asymmetry as the source of the induced current. We demonstrate that an
initial kick to the phase-field velocity and an anomalous coupling between the
phase-field and gauge fields are naturally provided, in a set-up such as the
Affleck-Dine mechanism. The resulting asymmetry carried by the Affleck-Dine
field can give rise to instability in the (electro)magnetic field. Cosmological
consequences of this mechanism are also investigated.Comment: 35 pages, 1 figure; v2: extended discussions, comments and references
added, matches version accepted for publication in JHE
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