A Statistical Analysis of Hadron Spectrum: Quantum Chaos in Hadrons

The nearest-neighbor mass-spacing distribution of the meson and baryon spectrum (up to 2.5 GeV) is described by the Wigner surmise corresponding to the statistics of the Gaussian orthogonal ensemble of random matrix theory. This can be viewed as a manifestation of quantum chaos in hadrons.Comment: 9 pages, 3 figures, revise

Proton polarizabilities: status, relevance, prospects

This is a brief review of the status of understanding the proton polarizabilities in chiral perturbation theory and of their relevance to the `proton charge radius puzzle'.Comment: 4 pages, 1 figure; contribution to proceedings of the Workshop to Explore Physics Opportunities with Intense, Polarized Electron Beams up to 300 MeV, March 14-16, 2013 MIT, Cambridge, Massachusett

Baryon chiral perturbation theory: an update

The issue of consistent power counting in baryon chiral perturbation theory is revisited.Comment: 5 pp, 1 fig; contributed to BARYONS 2010, Osaka, Japan, Dec 7-11, 201

The gamma-N -> Delta transition in chiral effective-field theory

We describe the pion electroproduction processes in the $\Delta$(1232)-resonance region within the framework of chiral effective-field theory. By studying the observables of pion electroproduction in a next-to-leading order calculation we are able to make predictions and draw conclusions on the properties of the $N\to \Delta$ electromagnetic form factors.Comment: 9 pages, 7 figures; prepared for the proceedings of "Shapes of Hadrons" workshop, Athens, Greece, 25-30 April 200