<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><span style="font-size: 14px;" class="">- Reminder - <br class=""><br class="">Theory Seminar<br class="">Wednesday, May 9<br class="">2:00pm - CEBAF Center, Room L102<br class=""><br class="">Arkadiusz Trawinski (CEA, Orsay)<br class="">Energy-momentum tensor for unpolarized proton target<br class=""><br class="">The link to attend remotely via BlueJeans is available at <a href="https://www.jlab.org/div_dept/theory/seminars/2018-spring-theory-seminar.html" class="">https://www.jlab.org/div_dept/theory/seminars/2018-spring-theory-seminar.html</a> <br class="">Looking forward to seeing you later,<br class=""><br class=""> Alessandro, Andrea, Bipasha<br class=""><br class="">--------------------------------------------------------<br class="">Abstract:</span><div class=""><span style="font-size: 14px;" class=""><br class=""></span><div class=""><span style="font-size: 14px;" class="">The discovery of the relation between the quantum energy-momentum tensor (EMT) and General Parton Distributions [1, 2] provides a unique way to study the EMT of the nucleon [3,4]. </span></div><div class=""><span style="font-size: 14px;" class=""><br class=""></span></div><div class=""><span style="font-size: 14px;" class="">It was shown that the expectation value of the EMT for an unpolarized proton target in the forward limit has the same structure as that of a perfect fluid [5]. The generalization of this result to a more general class of frames [6] leads to a more general EMT structure similar to that of an anisotropic perfect fluid density in the Breit frame. In this case additional terms can be related to the internal energy and transverse/radial pressure inside an unpolarized proton target.</span></div><div class=""><span style="font-size: 14px;" class=""><br class=""></span></div><div class=""><span style="font-size: 14px;" class="">We illustrate these results using current phenomenological knowledge of the EMT form factors.</span></div><div class=""><span style="font-size: 14px;" class=""><br class=""></span></div><div class=""><span style="font-size: 14px;" class="">References</span></div><div class=""><span style="font-size: 14px;" class="">[1] X.-D. Ji; Phys.Rev. D55 (1997) 7114-7125.</span></div><div class=""><span style="font-size: 14px;" class="">[2] X.-D. Ji; Phys.Rev.Lett. 78 (1997) 610-613.</span></div><div class=""><span style="font-size: 14px;" class="">[3] M.V. Polyakov; Phys.Lett. B555 (2003) 57-62.</span></div><div class=""><span style="font-size: 14px;" class="">[4] M. Burkardt; Int.J.Mod.Phys. A18 (2003) 173-208.</span></div><div class=""><span style="font-size: 14px;" class="">[5] C. Lorce'; Eur.Phys.J. C78 (2018) no.2, 120.</span></div><div class=""><span style="font-size: 14px;" class="">[6] C. Lorce', L. Mantovani, B. Pasquini; Phys.Lett. B776 (2018) 38-47.</span></div><span style="font-size: 14px;" class=""><br class="Apple-interchange-newline"></span><br class=""><div class=""><div class="">-- </div><div class="">Postdoctoral researcher </div><div class="">Theory Center - Jefferson Lab </div><div class="">12000 Jefferson Avenue, </div><div class="">Newport News, VA 23606 USA </div><div class="">CEBAF center, office A211</div><br class="Apple-interchange-newline">Tel: +1 (757) 269-6735<br class=""><br class=""><br class=""><br class=""><br class=""><br class=""></div><br class=""></div></body></html>