4,556 research outputs found
Quantitation of buried contamination by use of solvents
Experiments directed at determining the potential of reclaimed silicone polymers for reuse are described
Quantitation of buried contamination by use of solvents
Spore recovery form cured silicone potting compounds using amine solvents to degrade the cured polymers was investigated. A complete list of solvents and a description of the effect of each on two different silicone polymers is provided
Equivalent approaches for two-body anti-triplet charmed baryon decays
For the two-body anti-triplet charmed baryon decays, there exist two
theoretical analyses based on the flavor () symmetry. One is
the irreducible approach (IRA), which depends on the irreducible
representation of the effective Hamiltonian. The other is the
topological-diagram approach (TDA), where the decays are drawn to consist of
-boson emission and -boson exchange topologies. We demonstrate that IRA
and TDA can be equivalent, such that the IRA parameters can be seen to mix with
the TDA topologies. The current observations of might cause theoretical difficulties. With the
symmetry breaking, we explain . It is
found that a specific -boson exchange topology denoted by only appears
in , by which we explain . In addition, we predict for future
measurements to test if can be a significant contribution.Comment: 13 pages, 7 tables, 1 figure, introduction rephrased, reference
added, typos correcte
Pictorial approach for two-body weak decays
We explore two-body non-leptonic weak decays of into final
states and , where denotes an
octet (a decuplet) baryon, and represents a pseudoscalar (vector) meson.
Based on the flavor symmetry, we depict and parameterize
the -emission and -exchange processes using the topological diagram
approach, establishing strict relations for possible decay channels.
We identify dominant topological parameters, determined by available data,
allowing us to explain the experimental ratios , , and . We also calculate the branching fractions of the
Cabibbo-allowed decays, such as . In particular, we establish
approximate isospin relations: and , where
is accessible
to the Belle and LHCb experiments.Comment: 16 pages, 3 tables, 2 figure
How Much Does Money Matter in a Direct Democracy?
The fine-structure splitting of quantum confined InxGa1-x Nexcitons is investigated using polarization-sensitive photoluminescence spectroscopy. The majority of the studied emission lines exhibits mutually orthogonal fine-structure components split by 100-340 mu eV, as measured from the cleaved edge of the sample. The exciton and the biexciton reveal identical magnitudes but reversed sign of the energy splitting.Original Publication:Supaluck Amloy, Y T Chen, K F Karlsson, K H Chen, H C Hsu, C L Hsiao, L C Chen and Per-Olof Holtz, Polarization-resolved fine-structure splitting of zero-dimensional InxGa1-xN excitons, 2011, PHYSICAL REVIEW B, (83), 20, 201307.http://dx.doi.org/10.1103/PhysRevB.83.201307Copyright: American Physical Societyhttp://www.aps.org
Critical behavior of the 3-state Potts model on Sierpinski carpet
We study the critical behavior of the 3-state Potts model, where the spins
are located at the centers of the occupied squares of the deterministic
Sierpinski carpet. A finite-size scaling analysis is performed from Monte Carlo
simulations, for a Hausdorff dimension . The phase
transition is shown to be a second order one. The maxima of the susceptibility
of the order parameter follow a power law in a very reliable way, which enables
us to calculate the ratio of the exponents . We find that the
scaling corrections affect the behavior of most of the thermodynamical
quantities. However, the sequence of intersection points extracted from the
Binder's cumulant provides bounds for the critical temperature. We are able to
give the bounds for the exponent as well as for the ratio of the
exponents , which are compatible with the results calculated from
the hyperscaling relation.Comment: 13 pages, 4 figure
- …