34315779
Heavy quark symmetry and the Skyrme model.
We present a consistent way of describing heavy baryons containing a heavy quark as bound states of an SU(2) soliton and heavy mesons. The resulting mass formula reveals the heavy quark symmetry explicitly. By extending the model to the orbitally excited states, we establish the generic structure of the heavy baryon spectrum. As anticipated from the heavy quark spin symmetry, the [ital c] factor denoting the hyperfine splitting constant [ital vanishes] and the baryons with the same angular momentum of light degrees of freedom form degenerate doublets. This approach is also applied to the pentaquark exotic baryons, where the conventional [ital c] factor no longer plays the role of the hyperfine constant. After diagonalizing the Hamiltonian of order [ital N][sub [ital c]][sup [minus]1], we get the degenerate doublets, which implies the vanishing of genuine hyperfine splitting.
15881623
Skyrmions at finite density and temperature: The Chiral phase transition
Byung-Yoon Park was supported by a research fund from Chugnam National University, Hee- 
Jung Lee by the research grant of Chungbuk National University in 2008 and Vicente Vento by grant FPA2007-65748-C02-01 from Ministerio de Ciencia e Innovacion.
119028598
Half-Skyrmions, Tensor Forces and Symmetry Energy in Cold Dense Matter
In a previous article, the 4D half-skyrmion (or 5D dyonic salt) structure of dense baryonic matter described in crystalline configuration in the large Nc limit was shown to have nontrivial consequences on how anti-kaons behave in compressed nuclear matter with a possible implication on an “ice-9” phenomenon of deeply bound kaonic matter and condensed kaons in compact stars. We extend the analysis to make a further prediction on the scaling properties of hadrons that have a surprising effect on the nuclear tensor forces, the symmetry energy and hence on the phase structure at high density. We treat this problem relying on certain topological structure of chiral solitons. Combined with what can be deduced from hidden local symmetry for hadrons in dense medium and the “soft” dilatonic degree of freedom associated with the trace anomaly of QCD, we uncover a novel structure of chiral symmetry in the “supersoft” symmetry energy that can influence the structure of neutron stars. .
16984727
Topological Structure of Dense Hadronic Matter
We present a summary of work done on dense hadronic matter, based on the Skyrme model, which provides a unified approach to high density, valid in the large $N_c$ limit. In our picture, dense hadronic matter is described by the {\em classical} soliton configuration with minimum energy for the given baryon number density. By incorporating the meson fluctuations on such ground state we obtain an effective Lagrangian for meson dynamics in a dense medium. Our starting point has been the Skyrme model defined in terms of pions, thereafter we have extended and improved the model by incorporating other degrees of freedom such as dilaton, kaons and vector mesons.
15479695
Excited states of heavy baryons in the Skyrme model.
We obtain the spectra of excited heavy baryons containing one heavy quark by quantizing the exactly solved heavy meson bound states to the Skyrme soliton. The results are comparable to the recent experimental observations and quark model predictions, and are consistent with heavy quark spin symmetry. However, the somewhat large dependence of the results on the heavy quark mass strongly calls for the incorporation of the soliton-recoil effects. {copyright} {ital 1996 The American Physical Society.}
116131889
Chiral Model Predictions for Strange Form Factors
7089219
Energy dependence of the Gamow-Teller strength in p-shell nuclei observed in the (n,p) reaction.
Cross sections from 0{degree} to 10{degree} (lab) have been measured for ground-state Gamow-Teller transitions for the reactions {sup 6}Li({ital n},{ital p}){sup 6}He, {sup 12}C({ital n},{ital p}){sup 12}B and {sup 13}C({ital n},{ital p}){sup 13}B from 60 to 260 MeV. The 90-m station at the Weapons Neutron Research facility at Los Alamos National Laboratory was used to obtain these data. Unit cross sections ({sigma}) have been obtained and are compared with existing ({ital n},{ital p}) and ({ital p},{ital n}) data. The volume integrals ({ital J}{sub {sigma}{tau}}) for the spin-flip isospin-flip part of the effective nucleon-nucleon interaction have also been obtained and are compared with theoretical predictions.