[Theory-seminars] Theory Seminar on Monday (Sept 27th)

[Christopher Thomas]

Dear all,

The first regular theory seminar of the fall will be on Monday, Sept 
27th at 1pm in L102.  More details below.

There are still some theory and cake seminar slots free -- please let us 
know if you have any suggestions of people to give talks/invite.

Note that Wednesday cake seminars will now be at 2pm (instead of 3pm) to 
avoid potential clashes with physics colloquia.


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Monday, September 27th
1pm
Room L102

*Extracting Scattering Parameters using the Isospin Chemical Potential*

Michael Buchoff
Lawrence Livermore National Laboratory

Hadronic scattering mediated through the strong interaction has been an 
area of great interest for both theory and experiment. Recently, lattice 
QCD calculations of scattering processes from first principles have seen 
remarkable progress, including multiple calculations of two-pion 
scattering lengths that agree with experiment to within a few percent. 
However, there exists a certain class of scattering processes, such as 
pion-nucleon scattering, that contain annihilation diagrams, which are 
prohibitively expensive to simulate on the lattice. In this talk, I will 
present a method to extract certain parameters from this class of 
scattering processes by employing an isospin chemical potential, which 
can be simulated on the lattice as a result of its positive-definite 
fermion determinant.

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A complete list of upcoming theory seminars and talks from previous
seminars are available from:
http://www.jlab.org/~thomasc/seminars/index.html

Christopher, Hiroyuki and Vadim
JLab Theory Seminar Organizers

-- 
Christopher Thomas

Jefferson Laboratory
12000 Jefferson Avenue
Suite #1
Newport News
VA 23606
USA

Tel: +1 (757) 269 7453
Email: thomasc at jlab.org