Abstract
Since its formulation in 1974, the MIT bag model in various versions has acquired a considerable following. It is neither possible nor desirable for me to attempt to review all of the bag related developments of the past five years. A few works of a review nature exist. These are listed in Ref. 1–4. I shall give a brief introduction to the model in the static cavity approximation, since this approach has been the starting point for many applications. Following this is a discussion of deformations of the bag, applied to a calculation of the electric polarizability of the π meson, and applied to rotationally excited states. Some recent results regarding hadronic interactions are reviewed, in particular, for low energy nucleon-nucleon interactions and for meson-meson interactions. Finally, I shall discuss some recent efforts at treating low energy pion interactions in the bag model using PCAC.
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References and Footnotes
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Donoghue and Johnson (Ref. 42) give a slightly different estimate of the c.m. correction, namely pm 10/(mR), and find g= 1.27. They also calculate an improved magnetic moment for the proton: 2mpyp =2.5 and charge radius = (0.82)fm. Experimental values for the last two are 2.79 and (0.88)2n.
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DeTar, C. (1980). The Mit Bag Model. In: Mahanthappa, K.T., Randa, J. (eds) Quantum Flavordynamics, Quantum Chromodynamics, and Unified Theories. NATO Advanced Study Institutes Series, vol 54. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-3099-8_6
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