2–6 Aug 2021
online
Europe/Brussels timezone

Hadron Cosmological Constant and Origin of Proton Mass

2 Aug 2021, 17:00
20m
online

online

Parallel contribution A: Vacuum structure and confinement Parallels Focus Subsection

Speaker

Keh-Fei Liu (University of Kentucky)

Description

I will discuss the origin of the proton mass from the Hamiltonian and gravitational form factor formulations. After examining the mass decomposition in the stress-energy-momentum tensor, it is found that the glue part of the trace anomaly can be identified as the vacuum energy from the glue condensate and gives a CONSTANT restoring pressure which balances that from the traceless part of the Hamiltonian to confine the hadron, much like the cosmological constant Einstein introduced for a static universe. From a lattice calculation of this anomaly in the charmonium, we deduce the associated string tension which turns out to be in good agreement with that from a Cornell potential which fits the charmonium spectrum.

Primary author

Keh-Fei Liu (University of Kentucky)

Presentation materials