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<span style="font-size: 12pt; font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; color: black; background-color: rgb(255, 255, 255);"><span style="margin: 0px; background-color: white;"><span style="margin: 0px; background-color: white;"><span style="font-size:11pt;margin:0px" class="ContentPasted0">Dear
all, </span></span></span></span></div>
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<span style="margin: 0px; background-color: white;"><span style="font-size: 11pt; font-family: Calibri, sans-serif; margin: 0px; color: rgb(36, 36, 36);" class="ContentPasted0">On Wednesday, November 8</span><span style="font-size: 11pt; font-family: Calibri, sans-serif; margin: 0px; color: rgb(36, 36, 36);"><sup class="ContentPasted0">th</sup></span><span style="font-size: 11pt; font-family: Calibri, sans-serif; margin: 0px; color: rgb(36, 36, 36);" class="ContentPasted0">,
2023 at 1pm <span style="display: inline !important; background-color: rgb(255, 255, 255);">
EST</span>, we will have a<span style="margin:0px" class="ContentPasted0"> </span><span style="margin: 0px; color: rgb(66, 66, 66); background-color: white;" class="ContentPasted0">cake seminar<span style="margin:0px" class="ContentPasted0"> </span></span>given
by</span><span style="font-size: 11pt; font-family: Calibri, sans-serif; margin: 0px; color: rgb(36, 36, 36);"><span style="margin:0px" class="ContentPasted0"> </span><span data-markjs="true" style="margin:0px"></span></span><span data-markjs="true" style="font-size: 11pt; margin: 0px; background-color: white;"></span></span><span style="font-size: 11pt; margin: 0px; background-color: white;" class="ContentPasted0"><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt; display: inline !important; color: rgb(66, 66, 66); background-color: rgb(255, 255, 255);">Christian
Weiss</span></span><span style="margin: 0px; background-color: white;"><span data-markjs="true" style="font-size: 11pt; margin: 0px; background-color: white;"></span><span style="font-size: 16px; margin: 0px; background-color: white;"><span style="font-size:11pt;margin:0px" class="ContentPasted0"> </span></span><span style="font-size: 11pt; margin: 0px; background-color: white;" class="ContentPasted0">of<span class="ContentPasted0"> </span><span data-markjs="true" style="font-family: Calibri, Helvetica, sans-serif; margin: 0px; text-align: left; color: rgb(32, 32, 32); background-color: white;" class="ContentPasted0">JLab</span></span><span style="font-size: 11pt; font-family: Calibri, sans-serif; margin: 0px; color: rgb(36, 36, 36);"><span style="margin:0px" class="ContentPasted0"> </span><span style="margin: 0px; color: rgb(66, 66, 66); background-color: white;" class="ContentPasted0">in
CC F224-225. </span></span></span><span style="font-size:11pt;margin:0px" class="ContentPasted0">Please see below for the title and abstract. </span></div>
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<u><b><span style="font-size:12pt;margin:0px"><span data-markjs="true" style="font-size:11pt;margin:0px" class="ContentPasted0">Cake</span></span><span style="margin:0px"><span style="margin:0px" class="ContentPasted0"> </span></span><span style="font-size:12pt;margin:0px"><span data-markjs="true" style="font-size:11pt;margin:0px" class="ContentPasted0">Seminar</span></span></b></u><span style="margin:0px"><span style="margin:0px" class="ContentPasted0">:</span><b class="ContentPasted0"> </b></span><span style="margin:0px" class="ContentPasted0">Wednesday,<span class="ContentPasted0"> </span><span style="margin: 0px; color: rgb(36, 36, 36); background-color: white;" class="ContentPasted0">November</span><span class="ContentPasted0"> </span>8</span><span style="margin:0px"><sup class="ContentPasted0">th</sup></span><span style="margin:0px" class="ContentPasted0">,
1pm EST</span></p>
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<span style="font-size:11pt;margin:0px"><b><u class="ContentPasted0">Speaker</u></b></span><span style="font-size:11pt;margin:0px" class="ContentPasted0">:<span style="margin:0px" class="ContentPasted0"> </span><span data-markjs="true" style="margin:0px"></span><span data-markjs="true" style="font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; color: black; background-color: white;"></span><span style="margin: 0px; background-color: white;"><span style="font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; color: black; background-color: white;" class="ContentPasted0"><span style="font-family: Calibri, Helvetica, sans-serif; display: inline !important; color: rgb(66, 66, 66); background-color: rgb(255, 255, 255);">Christian
Weiss</span></span></span><span data-markjs="true" style="font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; color: black; background-color: white;"></span><span data-markjs="true" style="margin:0px"></span><span style="margin:0px" class="ContentPasted0"> </span>(<span style="margin: 0px; color: black; background-color: white;"><span style="font-family: Calibri, Helvetica, sans-serif; margin: 0px; text-align: left; color: rgb(32, 32, 32); background-color: white;" class="ContentPasted0">JLab</span></span>) </span></p>
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<b style="font-size:11pt"><span style="margin: 0px; color: black;"><b style="font-size: 13.3px; color: rgb(36, 36, 36);"><u><span style="font-size:11pt;margin:0px"><br class="ContentPasted0">
</span></u></b></span></b></p>
<p style="font-size: 10pt; font-family: Calibri, sans-serif; margin: 0px; color: rgb(36, 36, 36); background-color: white;">
<span style="font-size:11pt;margin:0px"><span style="margin: 0px; color: black;"><span style="font-size: 13.3px; margin: 0px; color: rgb(36, 36, 36);"><span style="font-size:11pt;margin:0px"><b><u class="ContentPasted0">Title</u></b></span></span><span style="margin: 0px; color: rgb(36, 36, 36);" class="ContentPasted0">:</span></span><span style="font-weight: bold; font-size: 12pt; margin: 0px; color: black;"><span style="font-size:11pt;margin:0px" class="ContentPasted0"> </span></span></span><span style="font-size: 11pt; margin: 0px; font-family: Calibri, Helvetica, sans-serif; color: black;" class="ContentPasted0"><span style="color: rgb(36, 36, 36); background-color: rgb(255, 255, 255);">Gluonic
structure of hadrons from the instanton vacuum </span></span></p>
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<b><span style="margin: 0px; color: black;"><b style="font-size: 13.3px; color: rgb(36, 36, 36);"><u><span style="font-size:11pt;margin:0px"><br class="ContentPasted0">
</span></u></b></span></b></p>
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<span style="margin: 0px; color: black;"><span style="font-size: 13.3px; margin: 0px; color: rgb(36, 36, 36);"><span style="font-size:11pt;margin:0px"><b><u class="ContentPasted0">Abstract</u></b></span></span><span style="margin: 0px; color: rgb(36, 36, 36);" class="ContentPasted0">:</span></span><span style="font-size: 12pt; margin: 0px; color: black;"><span style="font-size:11pt;margin:0px" class="ContentPasted0"> </span></span><span style="font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; color: black;"></span><span style="font-family: Calibri, Arial, Helvetica, sans-serif; margin: 0px; color: black;"><span style="margin: 0px; background-color: white;"></span></span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; background-color: rgb(255, 255, 255);">The
dynamical breaking of chiral symmetry is fundamental to the emergence of mass in QCD </span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;">and the long-range structure of light hadrons. Lattice QCD simulations show that the breaking </span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif;">of
chiral symmetry is caused by topological vacuum fluctuations of the gauge fields, which induce </span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif;">chiral zero modes of the fermion fields. The same topological gauge fields generate
a gluonic structure </span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;">of the hadrons, as measured by the matrix elements of QCD composite operators (local or partonic).</span>
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<span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif;">The gluonic structure produced by topological gauge fields is studied using the instanton vacuum, </span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif;">an
explicit realization of chiral symmetry breaking by topological gauge fields that permits systematic </span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif;">calculations (diluteness parameter). QCD operators involving gauge fields
are converted to effective </span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif;">operators in the effective theory obtained after chiral symmetry breaking [1]. The method preserves </span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif;">operator
relations resulting from the trace and axial anomalies and the QCD equations of motion. </span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif;">Applications include (i) twist-2 quark and gluon operators (PDFs/GPDs); (ii) twist-3
quark operators, </span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif;">where large instanton effects have recently been demonstrated in nonforward matrix elements </span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif;">(spin-orbit
correlations, twist-3 GPDs) [2]; (iii) twist-3 and 4 operators in power corrections to DIS </span><span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif;">structure functions; (iv) the nucleon form factors of the operators F^2 (trace anomaly,
nucleon mass) </span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;">and F-Fdual (axial anomaly, nucleon spin) [1].</span></div>
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<span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif;">The seminar presents an overview of the physical picture, the instanton vacuum method, the results for </span><span style="font-family: Calibri, Helvetica, sans-serif; font-size: 11pt;">various
QCD operators measuring gluonic structure in hadrons, and future directions in this effort.</span></div>
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<span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif;">[1] D. Diakonov, M.V. Polyakov, C. Weiss, Nucl. Phys. B 461, 539 (1996)</span></div>
<span style="font-size: 11pt; font-family: Calibri, Helvetica, sans-serif; margin: 0px; background-color: rgb(255, 255, 255);">[2] J.-Y. Kim and C. Weiss, arXiv:2310.16890</span><span style="margin: 0px; color: black;"></span></div>
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<span style="font-size:11pt;margin:0px" class="ContentPasted0">See you on<span style="margin:0px" class="ContentPasted0"> </span><span style="margin: 0px; background-color: white;" class="ContentPasted0">Wednesday</span>. </span></p>
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<span style="font-size:11pt;margin:0px" class="ContentPasted0">Best regards, </span></p>
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<span style="font-size:11pt;margin:0px" class="ContentPasted0">Caroline, Joe, and Zheng-Yang</span></p>
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