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<div class="">Dear all,</div>
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<div class="">Tomorrow we will have a theory seminar, please see below for details:</div>
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<div class="">Bluejeans connection: <a href="https://bluejeans.com/801786278" class="">https://bluejeans.com/801786278</a></div>
<div class="">Date and time: Monday Jun. 7, 2021, <b class=""><font color="#ff1f00" class="">9:00AM EDT</font></b></div>
<div class="">Speaker: Tim Harris (University of Edinburgh)</div>
<div class="">Title: Electromagnetic probes of the quark-gluon plasma from lattice QCD</div>
<div class="">Abstract: The structure of strongly-interacting matter at finite temperature is not as well understood as hadrons in the vacuum. Photons and leptons are important </div>
probes which can help us to decide on the qualitative features of the medium, and are also relevant to heavy-ion collision phenomenology. In this talk I <br class="">
will review some recent progress on constraining the thermal photon emissivity of the QGP from euclidean correlators computed in lattice QCD, which <br class="">
can be compared with scenarios from weakly or strong-coupled models of the medium. A first look at fixed-virtuality correlators will be presented which <br class="">
offers an alternative strategy to constrain the thermal emissivity via novel dispersion relations. The connection of fixed-virtuality correlators to the structure <br class="">
functions of the QGP, which parameterize the scattering of a lepton on the medium, will be discussed. Their interpretation could reveal how the fluid nature <br class="">
of the QGP emerges from the underlying partonic degrees of freedom.
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<div class="">The recording archives of our seminars can be found here:</div>
<div class=""> <a href="https://www.jlab.org/theory/seminars/2021seminars" class="">https://www.jlab.org/theory/seminars/2021seminars</a></div>
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<div class="">In order to easier recognize the person speaking at a given time during the seminar, we would like to kindly ask each participant to enter their full name when logging on to the meeting.</div>
<div class="">Thanks, and see you all there!</div>
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<div class="">Best regards,</div>
<div class="">Astrid, Christos, Filippo</div>
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