Seminars IFIC

IFIC seminar: Old and new lattice determinations of alpha_s

by Alberto Ramos (IFIC UV/CSIC)

Online (online)



Lattice QCD provides the most precise determinations of the strong coupling. 
In this talk I will give a critical review of these determinations and 
argue that only dedicated approaches have the potential to substantially 
decrease the uncertainty in alpha_s. Finally I will focus on one new
idea: that a precise value for alpha_s can be obtained from the 
running coupling in the pure gauge theory. The connection with QCD is 
performed thanks to a low energy scale determined with heavy quarks.
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