[Theory-seminars] [CORRECTED - Time change] Theory Seminar. Today. Room F324/325. 2:30pm. Chris Monahan

[Raul Briceno]

Hi all, 

First of all, I made a mistake in the date. The seminar is Today - Wednesday,  Dec 9th.

Second, since we were kicked out of our standard rooms and because the whole building was booked, we were moved to room F324/325 at 2:30pm. 

Theory Center Seminar
Today - Wednesday, Dec 9, 2015
2:30 p.m. 
CEBAF Center, Room F324/325 

Fortunately, I did get the speaker and title right! 

Cheers, 
Raul 

> On Dec 9, 2015, at 9:39 AM, Raul Briceno <rbriceno at jlab.org> wrote:
> 
> Theory Center Seminar
> Today - Wednesday, Dec 9, 2015
> 2:30 p.m. 
> CEBAF Center, Room F324/325 
> 
> Chris Monahan 
> Rutgers University
> 
> Title: Going with the (gradient) flow: Nucleon structure and power-divergent mixing on the lattice
> 
> Abstract: The direct determination of parton distribution functions (PDFs) from lattice QCD is an unsolved problem. The traditional approach expresses moments of PDFs in terms of matrix elements of local operators, but these operators suffer from power-divergent mixing that stems from the hypercubic symmetry of the lattice regulator. I will introduce the gradient flow as a means to suppress this power-divergent mixing, at the expense of introducing a new physical scale in the continuum. I will highlight two approaches to dealing with this new scale that could ultimately lead to ab initio calculations of PDFs on the lattice.
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