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<p>Theory Center Seminar<br>
Monday, March 6, 2017<br>
1:00 p.m.<br>
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<div class="">CNU Luter Hall, Room 121<br>
<i>(Please allow 20 minutes to travel from JLab)</i></div>
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Zohreh Davoudi<br>
MIT<br class="">
<br class="">
<b>Lattice QCD and Few-Body Observables</b><br class="">
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At the core of nuclear physics is understanding complex phenomena
occurring in the hottest and<br>
densest known environments in nature, and unraveling the mystery of
the dark sector and other <br>
new physics possibilities. Nuclear physicists are expected
to predict, with certainty, the reaction rates<br>
relevant to star evolutions and nuclear energy research, and to
obtain the “standard” effects in nuclei <br>
to reveal information about the “non-standard” sector. To achieve
such certainty, the field has gradually <br>
started to eliminate its reliance on the phenomenological models and
has entered an era where the <br>
underlying interactions are "effectively" based on the Standard
Model of particle physics, in particular <br>
Quantum Chromodynamics (QCD). The few-nucleon systems can now emerge
directly from the quark <br>
and gluon degrees of freedom and with only QCD interactions in play,
using the numerical method of <br>
lattice QCD. Few-body observable, such as few-hadron interactions
and scattering amplitudes, as well<br>
transition amplitudes and reaction rates, have been the focus of
this vastly growing field. Once obtained<br>
from QCD, and matched to effective field theories, these can advance
and improve the nuclear many-body <br>
calculations of exceedingly more complex systems. This talk will
demonstrate this road map, with a great <br>
focus on the progress in few-body observables from QCD.
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