[Theory-seminars] Theory Seminars next week

[Christopher Thomas]

Dear all,

We have two seminars next week (more details below):
* Monday (1pm, Nov 15) in L104
* Wednesday (2pm, Nov 17) cake seminar in L104

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

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Monday, Nov 15
1pm (coffee at 12:45)
Room L104

*Making contact: Sum rules and the momentum distribution of Fermi gases
at large scattering lengths*

Joaquin Drut
LANL

A few years ago, Shina Tan and others derived a set of exact relations
valid for strongly interacting non-relativistic Fermi gases in the 
regime of short interaction range and large scattering length. Recent
developments have shown that a central quantity in these identities, the 
so-called "contact" C, actually plays a crucial role in the
characterization of these systems, as it determines multiple 
thermodynamic properties as well as linear-response sum rules.  However,
computing the "contact" presents a challenge as it requires
non-perturbative methods such  as Quantum Monte Carlo. After a brief
review on the general properties of these systems, I will present our
first results for C as a function of temperature in the limit of 
infinite scattering length.  If time permits, I will comment on our
investigations into adapting Lattice QCD algorithms for these calculations.

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Cake Seminar
Wednesday, Nov 17
2pm
Room L104

*Exploring the Schwinger-Dyson Equations of the gauge sector of QCD*

David Wilson
Durham University, UK

I will talk about the solutions obtained when the Schwinger-Dyson 
Equations of QCD are solved, in particular for the gluons and ghosts. In 
order to obtain solutions a truncation must be devised that captures the 
most important aspects of the theory, however this can introduce errors 
and unphysical behavior depending on how this is done. I will discuss 
simple truncations and the effects that these have on the solutions that 
are obtained.

Cake Sponsor: Mike Pennington

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Christopher, Hiroyuki and Vadim
JLab Theory Seminar Organizers