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Theory Center Seminar<br>
Mon., Aug. 8, 2016<br>
1:00 p.m. (coffee at 12:45 p.m.)<br>
CEBAF Center, Room L102<br>
<br>
<b>Hadron Structure from the Feynman-Hellmann Theorem in Lattice QCD
<br>
<br>
</b>Alexander Chambers<br>
University of Adelaide<br>
<br>
There has been much experimental, theoretical and computational
effort expended in developing <br>
our understanding of the internal structure of hadrons. Despite this
there are many aspects that<br>
remain to be fully understood. The exact nature of the spin
decomposition of the nucleon is still <br>
unknown, as is the behaviour of electromagnetic form factors of the
pion and nucleon at higher<br>
momentum transfers. <br>
<br>
From a lattice perspective problems arise in calculations of these
quantities because of difficulties <br>
accessing "disconnected" contributions to matrix elements, and poor
signal-to-noise ratios associated<br>
with boosted hadron states. <br>
<br>
In this talk I will discuss results obtained from an alternative
lattice methodology motivated by the<br>
Feynman-Hellmann theorem. <br>
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