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High Energy, Nuclear, Particle Physics
New model of high-spin Baryons
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[QUOTE="mitchell porter, post: 6110469, member: 103130"] They are described here as (2+1)-dimensional sheets of eta-prime condensate, with the valence quarks on the boundary. One amazing detail is that, because it is a lower-dimensional object, the quarks are anyons! This description is said to apply most immediately to single-flavor baryons like ∆++ and Ω−. [URL]https://arxiv.org/abs/1812.09253[/URL] [B]Baryons as Quantum Hall Droplets[/B] Zohar Komargodski (Submitted on 21 Dec 2018) We revisit the problem of baryons in the large N limit of Quantum Chromodynamics. A special case in which the theory of Skyrmions is inapplicable is one-flavor QCD, where there are no light pions to construct the baryon from. More generally, the description of baryons made out of predominantly one flavor within the Skyrmion model is unsatisfactory. We propose a model for such baryons, where the baryons are interpreted as quantum Hall droplets. An important element in our construction is an extended, 2+1 dimensional, meta-stable configuration of the η′ particle. Baryon number is identified with a magnetic symmetry on the 2+1 dimensional sheet. If the sheet has a boundary, there are finite energy chiral excitations which carry baryon number. These chiral excitations are analogous to the electron in the fractional quantum Hall effect. Studying the chiral vertex operators we are able to determine the spin, isospin, and certain excitations of the droplet. In addition, balancing the tension of the droplet against the energy stored at the boundary we estimate the size and mass of the baryons. The mass, size, spin, isospin, and excitations that we find agree with phenomenological expectations. [/QUOTE]
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Physics
High Energy, Nuclear, Particle Physics
New model of high-spin Baryons
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