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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>Overview of hadron structure from Lattice QCD</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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