0000000000615802

AUTHOR

C. Garcia Recio

showing 2 related works from this author

Chiral unitary theory: Application to nuclear problems

2001

In this talk we briefly describe some basic elements of chiral perturbation theory, $\chi PT$, and how the implementation of unitarity and other novel elements lead to a better expansion of the $T$ matrix for meson meson and meson baryon interactions. Applications are then done to the $ \pi \pi $ interaction in nuclear matter in the scalar and vector channels, antikaons in nuclei and $K^-$ atoms, and how the $\phi$ meson properties are changed in a nuclear medium.

PhysicsParticle physicsChiral perturbation theoryNuclear TheoryMesonUnitarityHigh Energy Physics::LatticeScalar (mathematics)High Energy Physics::PhenomenologyNuclear TheoryGeneral Physics and AstronomyFOS: Physical sciencesFísicaNuclear matterUnitary stateBaryonNuclear Theory (nucl-th)Matrix (mathematics)High Energy Physics::ExperimentNuclear Experiment
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Eta bound states in nuclei

2002

The energies and widths of bound states of the $\eta$ meson in different nuclei are obtained using the results for its selfenergy in a nuclear medium, which is evaluated in a selfconsistent manner using techniques of unitarized chiral perturbation theory. We find bound states in all studied nuclei (from $^{12}{C}$ on) and the half widths obtained are larger than the separation of the levels, what makes the experimental observation of peaks unlikely. We have paid a special attention to the region of nuclei where only the $1s$ state appears and the binding energies are of the order of magnitude of the half width, which would magnify the chances that some broad peak could be observed. This is …

PhysicsNuclear and High Energy PhysicsChiral perturbation theoryMesonNuclear TheoryBinding energyNuclear TheoryFísicaState (functional analysis)Bound stateProduction (computer science)Continuum (set theory)Atomic physicsNuclear ExperimentOrder of magnitude
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