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Description

More than 99% of the mass of the visible universe is made up of protons and neutrons. Both particles are much heavier than their quark and gluon constituents. The existence and stability of atoms rely on the fact that the mass difference between the neutron and the proton is about 0.14%. A slightly smaller or larger value would have led to a dramatically different universe. I show how theoretical breakthroughs and high-performance computing resources have transitioned to a point where these masses, their differences and similar physics observables can be calculated accurately on space-time lattices directly from Quantum Chromodynamics, the strongly interacting theory of quarks and gluons.

Details

Title
The Origin of Mass of the Visible Universe
Creator
University of California, Berkeley. Dept. of Physics
Published
Berkeley, CA, University of California, Berkeley, Dept. of Physics, October 26, 2015
Link to Content
UC Berkeley Library Online Video Collection.
Full Collection Name
Physics Colloquia
Type
Video
Format
Lecture.
Extent
1 streaming video file
Other Physical Details
digital, sd., col.
Archive
Physics Library
Note
Recorded at a colloquium held on October 26, 2015, sponsored by the Dept. of Physics, University of California, Berkeley.
originally produced as an .mts file in 2016
Speakers: Fodor, Zoltan.
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