5,676 research outputs found
Gauge-invariant implementation of the Abelian Higgs model on optical lattices
We present a gauge-invariant effective action for the Abelian Higgs model
(scalar electrodynamics) with a chemical potential on a 1+1 dimensional
lattice. This formulation provides an expansion in the hopping parameter
which we test with Monte Carlo simulations for a broad range of the
inverse gauge coupling and small values of the scalar
self-coupling . In the opposite limit of infinitely large ,
the partition function can be written as a traced product of local tensors
which allows us to write exact blocking formulas. Their numerical
implementation requires truncations but there is no sign problem for arbitrary
values of . We show that the time continuum limit of the blocked transfer
matrix can be obtained numerically and, in the limit of infinite
and with a spin-1 truncation, the small volume energy spectrum is identical to
the low energy spectrum of a two-species Bose-Hubbard model in the limit of
large onsite repulsion. We extend this procedure for finite and
derive a spin-1 approximation of the Hamiltonian. It involves new terms
corresponding to transitions among the two species in the Bose-Hubbard model.
We propose an optical lattice implementation involving a ladder structure.Comment: 10 pages, 9 figure
Tumor Classification Using High-Order Gene Expression Profiles Based on Multilinear ICA
Motivation. Independent Components Analysis (ICA) maximizes the statistical independence of the representational components of
a training gene expression profiles (GEP) ensemble, but it cannot
distinguish relations between the different factors, or different
modes, and it is not available to high-order GEP Data Mining. In
order to generalize ICA, we introduce Multilinear-ICA and apply it to
tumor classification using high order GEP. Firstly, we introduce the
basis conceptions and operations of tensor and recommend Support
Vector Machine (SVM) classifier and Multilinear-ICA. Secondly,
the higher score genes of original high order GEP are selected by
using t-statistics and tabulate tensors. Thirdly, the tensors are
performed by Multilinear-ICA. Finally, the SVM is used to classify
the tumor subtypes. Results. To show the validity of the proposed method, we apply it
to tumor classification using high order GEP. Though we only use
three datasets, the experimental results show that the method is
effective and feasible. Through this survey, we hope to gain some
insight into the problem of high order GEP tumor classification, in
aid of further developing more effective tumor classification algorithms
3-Hydroxy-3-phenylisoindolin-1-one 0.33-hydrate
The asymmetric unit of the title compound, C14H11NO2·0.33H2O, contains three 3-hydroxy-3-phenylisoindolin-1-one (HPIO) molecules and one water molecule. The three independent HPIO molecules differ in the orientations of hydroxy and phenyl groups substituted at the 3-position with respect to the planar [r.m.s. deviations of 0.0173, 0.0170 and 0.0102 Å] dihydroisoindolin-1-one ring system. In the crystal structure, molecules are linked into a three-dimensional network by O—H⋯O, N—H⋯O and C—H⋯O hydrogen bonds
The impact of global industrial manufacturing and the development strategy of new energy and new technologies under the action of carbon reduction
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