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<div><tt><b><span style="font-size: 15px;">Theory Center Seminar<br>
Monday, Dec. 5, 2016<br>
1:00 p.m. (coffee at 12:45 p.m.)<br>
<br>
<br>
Retrieving the optical potential from a Lattice simulation<br>
<br>
Maxim Mai<br>
George Washington University<br style="font-size: 13px;">
</span></b></tt><tt><font style="font-size: 14px;"
color="#0f61c8" size="2"><br>
</font></tt><tt><span style="font-size: 14px;">We propose a
method for the direct extraction of the complex hadron-hadron
optical potential </span></tt></div>
<div><tt><span style="font-size: 14px;">(or, equivalently, the phase
shift and inelasticity in a given channel) on the lattice,
which does not require </span></tt></div>
<tt><span style="font-size: 14px;">the use of the multi-channel
Luscher formalism, but the knowledge of a tower of energy levels
only.</span></tt>
<div><tt><span style="font-size: 14px;">The approach works for any
multi-particle states and tested explicitly on a set of
synthetic data for the </span></tt></div>
<div><tt><span style="font-size: 14px;">pi eta/Kbar K system.
Further, we show how a sufficiently large number of energy
eigenvalues can be </span></tt></div>
<div><tt><span style="font-size: 14px;">obtained utilizing partial
twisting. </span></tt></div>
<span style="font-size: 14px;"><br class="Apple-interchange-newline">
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