- #1
member 656954
- TL;DR Summary
- Noting that this study does not yet appear to be peer reviewed - and that the LHC data only provides a "strong direct indication" - does quantum entanglement at sub-nucleonic scales suggest new physics or is it entirely expected within the Standard Model?
I'm happy to admit that I am struggling to digest this recent arXiv paper - https://arxiv.org/abs/1904.11974 - but I am interested in whether its reasoning and provisional conclusion seems insightful or merely interesting.
My summary of their work is that the researchers consider colour confinement as an example of the EPR paradox at the sub-nucleonic scale, and so used CMS data to study the entropy resulting from entanglement within the proton to test for this. Their results suggest that quarks and gluons are entangled, with an acknowledgment that verification via electron-proton and electron-ion collisions at small x is needed, as well as studies of real-time evolution of quantum entanglement in high-energy processes.
The underlying driver for their study is the unknown dynamics of QCD and in particular, that the hard processes used to probe the parton structure lead to the view of partons as independent constituents that carry different fractions of the nucleon's momentum, which has consequences for entropy within their configuration space.
Given that the researchers were looking for an effect, and the basis for their comparison is Monte Carlo simulation, I am mindful that their approach might be skewed toward the outcome.
Still, a strong direct indication does warrant further investigation, but my question really is whether this represents hints of things beyond the Standard Model, or merely confirmation of it?
My summary of their work is that the researchers consider colour confinement as an example of the EPR paradox at the sub-nucleonic scale, and so used CMS data to study the entropy resulting from entanglement within the proton to test for this. Their results suggest that quarks and gluons are entangled, with an acknowledgment that verification via electron-proton and electron-ion collisions at small x is needed, as well as studies of real-time evolution of quantum entanglement in high-energy processes.
The underlying driver for their study is the unknown dynamics of QCD and in particular, that the hard processes used to probe the parton structure lead to the view of partons as independent constituents that carry different fractions of the nucleon's momentum, which has consequences for entropy within their configuration space.
Given that the researchers were looking for an effect, and the basis for their comparison is Monte Carlo simulation, I am mindful that their approach might be skewed toward the outcome.
Still, a strong direct indication does warrant further investigation, but my question really is whether this represents hints of things beyond the Standard Model, or merely confirmation of it?