26,850 research outputs found
Double occupancies in confined attractive fermions on optical lattices
We perform a numerical study of a one-dimensional Fermion-Hubbard model in
harmonic traps within the Thomas-Fermi approximation based on the exact
Bethe-ansatz solution. The phase diagram is shown for the systems of
attractive interactions ( is the characteristic density and the
interaction strength scaled in units of the hopping parameter.). We study the
double occupancy, the local central density and their derivatives. Their roles
are discussed in details in detecting the composite phases induced by the
trapping potential.Comment: 4 pages, 4 figures, submitte
Light-front wavefunction dependence of the quark recombination
We present an extension of the recombination formalism to analyze the effects
from the variation of the hadron wavefunctions. The hadron spectra are
sensitive to the shape of the wavefunctions. However, when we fit the
wavefunction parameters to the physical observables, such as the average charge
radius, the final spectra are very similar each other. We discuss our numerical
results in comparison with the published PHENIX and STAR data at RHIC. In the
hadron spectra, the recombination of thermal partons dominates at intermediate
transverse momentum ( = 2 5 GeV), and the fragmentation dominates
at high ( 5 GeV). The yield ratios and the nuclear modification
factors for various hadron species are also estimated and compared to the
experimental data. We present a new prediction on and
ratios, including the jet quenching effects to the fragmentation mechanism.Comment: 26 pages, 7 figure
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The Emerging Role of Ten-Eleven Translocation 1 in Epigenetic Responses to Environmental Exposures.
Mounting evidence from epidemiological studies and animal models has linked exposures to environmental factors to changes in epigenetic markers, especially in DNA methylation. These epigenetic changes may lead to dysregulation of molecular processes and functions and mediate the impact of environmental exposures in complex diseases. However, detailed molecular events that result in epigenetic changes following exposures remain unclear. Here, we review the emerging evidence supporting a critical role of ten-eleven translocation 1 (TET1) in mediating these processes. Targeting TET1 and its associated pathways may have therapeutic potential in alleviating negative impacts of environmental exposures, preventing and treating exposure-related diseases
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