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Dear all, </div>
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<span style="font-size: 11pt;">Today, Wednesday, May 7<sup>th</sup>, 2025 at 1pm </span>
<span style="font-size: 14.67px;">EDT</span><span style="font-size: 11pt;">, we will have a cake seminar given by Adam Freese</span><span style="font-size: 11pt; font-weight: 700;"> </span><span style="font-size: 11pt;">of JLab in CC L102 and on the following
Zoom link: </span></div>
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<a href="https://jlab-org.zoomgov.com/j/1612074550?pwd=GTfuZLa1ly0zWNO1qx0VDF1rJHoFxj.1" target="_blank" id="OWAe1eafe62-228d-05b8-988e-05b0167d38ad" class="x_OWAAutoLink" title="https://jlab-org.zoomgov.com/j/1612074550?pwd=GTfuZLa1ly0zWNO1qx0VDF1rJHoFxj.1" rel="noopener noreferrer" data-auth="NotApplicable" data-linkindex="0" data-olk-copy-source="MessageBody" style="margin: 0px;">https://jlab-org.zoomgov.com/j/1612074550?pwd=GTfuZLa1ly0zWNO1qx0VDF1rJHoFxj.1</a></div>
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Attendance in person is highly encouraged. Please see below for the title and abstract. </div>
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<span style="font-size: 11pt;"><b><u>Cake Seminar</u></b>:<b> </b>Wednesday, May 7<sup>th</sup>, 2025 at 1pm
</span><span style="font-size: 14.67px;">EDT</span></div>
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<b><u><br>
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<b><u>Speaker</u></b>: Adam Freese (JLab) </div>
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<span style="font-family: Calibri, Helvetica, sans-serif, serif, EmojiFont;"><b><u>Title</u></b>:<b> </b></span><span style="font-family: Calibri, Helvetica, sans-serif;">Galilei covariance and non-relativistic fermions</span><span style="font-family: Calibri, Helvetica, sans-serif, serif, EmojiFont;"> </span></div>
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<span style="font-family: Calibri, Helvetica, sans-serif, serif, EmojiFont; font-size: 11pt; color: rgb(0, 0, 0);"><b><u>Abstract</u></b>:
</span><span style="font-family: Calibri, Helvetica, sans-serif, serif, EmojiFont; font-size: 11pt; color: black;">Non-relativistic quantum systems have recently become testing grounds for imaginative ideas about mechanical properties of hadrons. Their continued
use, however, demands that the symmetries of non-relativistic mechanics—namely Galilei covariance—be taken seriously. I obtain Galilei-covariant expressions for matrix elements of the energy-momentum tensor in terms of mechanical form factors for spin-zero
and spin-half states, exploiting the fact that the Galilei group is embedded in a (4+1)-dimensional Lorentz group. Most of this talk will be about the derivation of Galilei-covariant spinors in particular, which transform under the defining representation
of the pseudo-unitary quaternion group U(1,1,H), which is isomorphic to the pseudo-unitary complex sympletic group USp(2,2,C). </span></p>
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See you later. </div>
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Best regards, </div>
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<span style="color: rgb(0, 0, 0);">Joe, Zheng-Yang</span><span style="color: black; background-color: white;">, Gloria & Adam</span></div>
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