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W&M/JLab faculty interviews<br>
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Wednesday, Mar 2, 2016<br>
3:00 p.m. <br>
CEBAF Center, Room F326<br>
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Gernot Eichmann<br>
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<b>From quarks and gluons to the structure of hadrons </b><br>
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Quarks and gluons are the fundamental building blocks of
visible matter, yet we cannot observe them because they
are confined inside hadrons. In light of ongoing
experimental advances at Jefferson Lab and other
facilities, the theoretical description of hadrons within
QCD still poses an enormous challenge: what is the nature
of baryon resonances? Do tetraquarks and pentaquarks exist
and if yes, how should we interpret them? Can we describe
nucleon form factors, polarizabilities, or
electroproduction amplitudes from the level of quarks and
gluons? And is it possible to understand nuclei from the
fundamental interactions in QCD? <br>
Here I will discuss the approach employing
Dyson-Schwinger, Bethe-Salpeter and Faddeev equations,
whose basic promise is to calculate hadron properties from
the nonperturbative structure of the underlying Green
functions in QCD – the quark and gluon propagators,
quark-gluon vertex etc. I will highlight some recent
progress that has been made regarding the spectrum of
mesons and baryons, tetraquarks, nucleon and nucleon
resonance form factors, Compton scattering, and the muon
g-2 problem, and I will discuss future perspectives and
opportunities within this framework. <br>
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W&M/JLab interviews calendar:<br>
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Jan. 20: Jo Dudek at JLab<br>
Jan. 21: Dudek at W&M<br>
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Jan. 27: Chris Monahan at JLab<br>
Jan. 28: Monahan at W&M<br>
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Feb. 4: Phiala Shanahan at W&M<br>
Feb. 5: Shanahan at JLab<br>
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Feb. 10: Maxwell Hansen at JLab<br>
Feb. 11: Hansen at W&M<br>
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Feb. 17: Martha Constantinou at JLab<br>
Feb. 18: Constantinou at W&M<br>
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Mar. 2: Gernot Eichmann at JLab<br>
Mar. 3: Eichmann at W&M<br>
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