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33 papers · 1 filter
Kaon-Nucleon scattering lengths from the experiments on kaonic hydrogen and kaonic deuterium
Akaki Rusetsky
Within the framework of a low-energy effective field theory we consider the procedure of extraction of the S-wave kaon-nucleon scattering lengths a0 and a1 from a combined fit to t…
Space-time in light of Karolyhazy uncertainty relation
Michael Maziashvili
General relativity and quantum mechanics provide a natural explanation for the existence of dark energy with its observed value and predict its dynamics. Dark energy proves to be n…
Chiral expansion of the nucleon mass to order q^6
M. R. Schindler, D. Djukanovic, J. Gegelia +1
We present the results of a complete two-loop calculation at order q^6 of the nucleon mass in manifestly Lorentz-invariant chiral perturbation theory. The renormalization is perfor…
Long-Range Effects in Layered Spin Structures
Alessandro Campa, Ramaz Khomeriki, David Mukamel +1
We study theoretically layered spin systems where long-range dipolar interactions play a relevant role. By choosing a specific sample shape, we are able to reduce the complex Hamil…
On relationship between conformal transformations and broken chiral symmetry
A. I. Machavariani
Starting with the conformal transformations in the momentum space, the nonlinear -model and the standard model with the spontaneous broken symmetry are reprod…
Axial, induced pseudoscalar, and pion-nucleon form factors in manifestly Lorentz-invariant chiral perturbation theory
M. R. Schindler, T. Fuchs, J. Gegelia +1
We calculate the nucleon form factors G_A and G_P of the isovector axial-vector current and the pion-nucleon form factor G_piN in manifestly Lorentz-invariant baryon chiral perturb…