Nucleon electromagnetic and gravitational form factors from holography
arXiv:0903.4818 · doi:10.1103/PhysRevD.79.115003
Abstract
The electromagnetic form factors of nucleons are calculated using an AdS/QCD model by considering a Dirac field coupled to a vector field in the 5-dimensional AdS space. We also calculate a gravitational or energy-momentum form factor by perturbing the metric from the static AdS solution. We consider both the hard-wall model where the AdS geometry is cutoff at z_0 and the soft-wall model where the geometry is smoothly cut off by a background dilaton field.
9 pages, 3 figures, version 2 has added references and version 3 fixes some typos
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