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Theory Center Seminar<br>
Mon., March 26, 2012<br>
CEBAF Center, Room L104<br>
1:00 p.m. (coffee at 12:45 p.m.)<br>
<br>
<b>Nuclear Symmetry Energy and Evolution of Proto-Neutron Star</b><!--StartFragment-->
<p class="MsoNormal" style="text-align: justify;">Gang Shen<br>
LANL<br>
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<p class="MsoNormal" style="text-align: justify;">The phenomenon of
neutron rich matter plays a central role in many areas of nuclear
astrophysics.
<br>
One of the important unknowns is the nuclear symmetry energy and its
density dependence, which
<br>
defines how different the neutron rich matter is from symmetric nuclear
matter. It determines the <br>
biggest size of a neutron star formed in nature and the neutron radius
of Pb208, which is currently <br>
measured at JLab.
I will outline our program to generate a set of nuclear equations of
state and <br>
consistent neutrino
opacity for the study of core collapse supernova. As a first
application, I will<br>
illustrate a newly
found connection between the nuclear symmetry energy and the evolution
of <br>
proto-neutron
star: it may have observable signature in supernova neutrino spectra.
This spectra<br>
can be measured
in large water detectors such as SuperK.
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