In the realistic model of cosmic inflation inflaton potential should be flat and stable under quantum corrections. It is natural to imagine that there some symmetry behind an idea as a Nambu-Goldstone boson spontaneous breaking has been examined. We give general formulation this using non-linear realization in low-energy effective theory with explicit generate non-trivial potential. The natural...

A bstract General flavor changing Goldstone boson (GB) interactions with fermions from a spontaneous global U(1) G symmetry breaking are discussed. This GB may be the Axion, solving strong QCD CP problem, if there is anomaly for assignments of quarks charge. Or it Majoron, producing seesaw Majorana neutrino masses by lepton number violation, scale much higher than electroweak scale. It also, in...

We discuss the Nambu-Goldstone boson and the WardTakahashi identity in a system with spontaneous symmetry breaking. We give a formula for the Nambu-Goldstone boson for a general transformation group G. The Ward-Takahashi identity is modified in the presence of the Nambu-Goldstone boson. We apply this theory to examine low-excitation modes in superconductors. In a multi-gap superconductor, the m...

We derive new actions for the bosonic p-brane, super p-brane and the p-brane moving in AdS (dS) space-times using the theory of non-linear realisation without requiring the adoption of any constraints or using superfields. The Goldstone boson associated with the breaking of Lorentz transformations becomes a dynamical field whose equation of motion relates it algebraically to the remaining Golds...

We propose that the mass of the h8 meson is a particularly sensitive probe of the properties of finite energy density hadronic matter and quark-gluon plasma. We argue that the mass of the h8 excitation in hot and dense matter should be small, and, therefore, that the h8 production cross section should be much increased relative to that for pp collisions. This may have observable consequences in...

It is shown that the binding effect that is associated with the short range part of the Goldstone boson exchange interaction between constituent quarks provides a good description of the πN σ-term.

It is shown that the binding effect that is associated with the short range part of the Goldstone boson exchange interaction between constituent quarks provides a good description of the πN σ-term.

Pseudo-Goldstone bosons in 4D strongly coupled theories have a dual description in terms of 5D gauge theories in warped backgrounds. We introduce systematic methods of computing the pseudo-Goldstone potential for an arbitrary warp factor in 5D. When applied to electroweak symmetry breaking, our approach clarifies the relation of physical observables to geometrical quantities in five dimensions....

We propose that the mass of the η meson is a particularly sensitive probe of the properties of finite energy density hadronic matter and quark gluon plasma. We argue that the mass of the η excitation in hot and dense matter should be small, and therefore that the η production cross section should be much increased relative to that for pp collisions. This may have observable consequences in dile...