<div dir="ltr"><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><br></div></div></div></div></div></div></div></div><div class="gmail_quote"><br><br><div dir="ltr"><div><div><div style="overflow:auto"><div style="max-height:10000px"><div dir="ltr"><div><div><div style="overflow:auto"><div style="max-height:10000px"><div dir="ltr"><p style="text-align:center;clear:both"><img src="cid:8a115d6d-426a-4f9c-bd89-e143f96e3532" alt="SDSU_CSRC Logo.jpg" style="margin-left:1em;margin-right:1em"></p><p class="MsoNormal" align="center" style="color:rgba(0,0,0,0.87);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:14px;text-align:center"><span style="color:black"><font face="verdana, sans-serif"><br>DATE:</font></span><font face="verdana, sans-serif"><span style="font-size:10pt;color:black"> </span><span style="font-size:13.5pt;color:black"> <br></span><b><font size="4">Friday, November 13, 2020</font></b></font></p><p class="MsoNormal" align="center" style="color:rgba(0,0,0,0.87);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:14px;text-align:center"><b><span style="font-size:18pt"><font face="verdana, sans-serif"><br></font></span></b></p><p class="MsoNormal" align="center" style="color:rgba(0,0,0,0.87);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:14px;text-align:center"><font face="verdana, sans-serif"><span style="font-size:10pt;color:black"></span></font></p><p class="MsoNormal" align="center" style="color:rgba(0,0,0,0.87);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:14px;text-align:center"><span style="color:black"><font face="verdana, sans-serif"><br></font></span></p><div dir="ltr" style="color:rgba(0,0,0,0.87)"><p class="MsoNormal" align="center" style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;text-align:center"><font face="verdana, sans-serif"><span style="font-size:10pt;color:black"></span></font></p><p class="MsoNormal" align="center" style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;text-align:center"><font face="verdana, sans-serif"><span style="color:black"></span></font></p><p class="MsoNormal" align="center" style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;text-align:center"><font face="verdana, sans-serif"><span style="color:black">TITLE:</span><span style="font-size:10pt;color:black"><br></span></font></p><p class="MsoNormal" align="center" style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;text-align:center"><font face="verdana, sans-serif"><span style="font-size:10pt;color:black"></span></font></p><p class="MsoNormal" align="center" style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;text-align:center"><font size="6" face="verdana, sans-serif"></font></p><p class="MsoNormal" align="center" style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;text-align:center"><font size="6" face="verdana, sans-serif"><b><span style="background-image:none;background-position:0% 0%;background-repeat:repeat"></span></b></font></p><div style="text-align:center"><p class="MsoNormal" align="center" style="line-height:19.5px"><font face="verdana, sans-serif" size="4"><b>Improving Mass Predictions Throughout the Nuclear Chart</b></font><font face="verdana, sans-serif" size="4"><b> </b></font></p></div><div style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;text-align:center"><font face="verdana, sans-serif"><font size="6"><b><br></b></font><font size="6"><b></b></font></font><p class="MsoNormal"><b><font face="verdana, sans-serif"><span style="font-size:11pt;color:black"></span></font></b></p><font face="verdana, sans-serif"><font size="6"><b></b></font><font size="6"><b><span style="font-size:12pt"></span></b></font><font size="6"><b></b></font><font size="6"><b><span style="font-size:11pt"></span></b></font></font></div><p class="MsoNormal" align="center" style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;text-align:center"><font face="verdana, sans-serif"><span style="color:black"></span></font></p><p class="MsoNormal" align="center" style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;text-align:center"><font face="verdana, sans-serif"><span style="color:black"></span></font></p><p class="MsoNormal" align="center" style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;text-align:center"><span style="color:black"><font face="verdana, sans-serif"><br></font></span></p><p class="MsoNormal" align="center" style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;text-align:center"><font face="verdana, sans-serif"><span style="color:black">TIME:</span><span style="font-size:10pt;color:black"> </span><span style="font-size:13.5pt;color:black"> <br></span><b><font size="4">3:30-4:30PM</font></b></font></p><p class="MsoNormal" align="center" style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;text-align:center"><font face="verdana, sans-serif"><br><b><span style="font-size:18pt"><span style="color:black"></span></span></b></font></p><p class="MsoNormal" align="center" style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;text-align:center"><span style="font-size:10pt;color:black"><font face="verdana, sans-serif"> </font></span></p><p class="MsoNormal" align="center" style="text-align:center"><font style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif"><span style="color:black">LOCATION:<br></span><font size="4" style="font-weight:bold"><span style="color:black">Join Zoom Meeting - </span></font></font><a href="https://sdsu.zoom.us/j/91071174391" title="https://SDSU.zoom.us/j/91071174391" target="_blank"><font face="verdana, sans-serif" size="4"><b>https://SDSU.zoom.us/j/91071174391</b></font></a><font style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif"><font size="4"><font color="#000000"><br></font></font><span style="font-weight:bold"><font size="4"><br></font></span></font></p><p class="MsoNormal" align="center" style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;text-align:center"><span style="font-size:10pt;color:black"><font face="verdana, sans-serif"> </font></span></p><p class="MsoNormal" align="center" style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;text-align:center"><font face="verdana, sans-serif"><span style="color:black"></span></font></p><p class="MsoNormal" align="center" style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;text-align:center"><font face="verdana, sans-serif"><span style="color:black">SPEAKER/BIO:</span><span style="font-size:13.5pt;color:black"> </span></font></p><p class="MsoNormal" align="center" style="text-align:center"><font face="verdana, sans-serif" size="4"><b>Dr. Rodrigo Navarro Perez, Physics, San Diego State University </b></font> <font face="verdana, sans-serif"><br></font></p><p class="MsoNormal" align="center" style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;text-align:center"><font size="4" face="verdana, sans-serif"><b><b><span style="font-size:18pt"><span style="color:black"></span></span></b></b></font></p><p class="MsoNormal" align="center" style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;text-align:center"><b><font face="verdana, sans-serif"><span style="font-size:18pt"></span></font></b></p><p class="MsoNormal" align="center" style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;text-align:center"><span style="color:black"><font face="verdana, sans-serif"> </font></span></p><p class="MsoNormal" style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif"><font size="2" face="verdana, sans-serif"><span style="color:black"><br></span></font></p><p class="MsoNormal" style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif"><font size="2" face="verdana, sans-serif"><span style="color:black"><br></span></font></p><p class="MsoNormal" style="font-size:14px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;text-align:center"><span style="color:black"><font size="2" face="verdana, sans-serif">ABSTRACT:</font></span></p></div><div dir="ltr" style="color:rgba(0,0,0,0.87);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:14px"><font face="verdana, sans-serif"><br></font></div><div><div></div></div><p class="MsoNormal" style="margin:6pt 0in;line-height:19.5px;text-align:justify;text-indent:0.25in"><span style="line-height:19.5px;color:black"><br></span><font face="verdana, sans-serif" size="4">Nuclear masses are a crucial ingredient in simulating stellar evolution
and the creation of heavy elements. This is particularly true for heavy,
neutron-rich isotopes for which experimental values are not available.
Different many body methods can be used to calculate nuclear masses
throughout the nuclear chart. Direct ab-initio methods have been
successful in correctly describing light and intermediate nuclei, but
heavy nuclei remain out of reach. Mean-field approaches can be used for
light and heavy nuclei but rely on phenomenological interactions, which
causes discrepancies between theory and experiment. In this talk I'll
review two different approaches for improving mean-field calculations
throughout the nuclear chart. The first approach attempts to include
microscopically constrained contributions in the mean interaction to
create a semi-phenomenological interaction. The second approach uses
machine learning algorithms to approximate the model discrepancy between
theory and experiments which can then be used to improve predictions in
nuclei that are yet to be measured. Successes and limitations for both
approaches will be discussed.</font><font face="verdana, sans-serif" size="4" style="color:rgba(0,0,0,0.87)"><span style="color:rgb(34,34,34)"> </span><span style="color:rgb(34,34,34)"> </span></font><span style="font-family:"Times New Roman",serif"> </span><font face="verdana, sans-serif" size="4" style="color:rgba(0,0,0,0.87)"> </font></p><div dir="ltr" style="color:rgba(0,0,0,0.87)"><font face="verdana, sans-serif"><br></font></div><div dir="ltr" style="color:rgba(0,0,0,0.87);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:14px"><font size="4" face="verdana, sans-serif"> <br></font></div><div dir="ltr" style="color:rgba(0,0,0,0.87);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:14px"><font size="4" face="verdana, sans-serif"><br></font><p class="MsoNormal" style="margin:0in 5.2pt 0.0001pt 0in;line-height:13.91px"><font face="verdana, sans-serif"><br></font></p><font size="4" face="verdana, sans-serif"></font></div><font face="verdana, sans-serif" style="font-size:14px"><font size="4"><font color="#000000">Host:</font><font color="rgba(0, 0, 0, 0.870588235294118)"> </font><font color="#000000">Calvin Johnson</font></font><br></font><div style="color:rgba(0,0,0,0.87);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:14px"><font size="4" face="verdana, sans-serif"><br></font></div><div style="color:rgba(0,0,0,0.87);font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;font-size:14px"><p class="MsoNormal"><font face="verdana, sans-serif" size="4"><span style="font-weight:bold">Note:</span><span style="font-weight:bold"> </span>Videos of previous colloquium talks<span style="text-align:center"> can be seen on the CSRC website in the colloquium archive section or on the </span><a href="https://www.youtube.com/channel/UCN0ZEztlmyDqG2pm-Rle_Eg/feed" rel="nofollow" style="color:rgb(26,115,232);text-align:center" target="_blank">CSRC YouTube page here</a><span style="text-align:center">.</span></font></p><p class="MsoNormal"><font face="verdana, sans-serif" size="4"><span style="text-align:center"><br><br></span></font></p><p class="MsoNormal"><font face="verdana, sans-serif" size="4"><span style="text-align:center"><br></span></font></p></div></div></div></div></div><div></div><div></div></div><div><div></div></div><div></div></div></div></div></div><div></div><div></div></div><div><div></div></div><div><div><div style="display:inline-block"></div><div></div></div></div></div>
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