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Title Level crossing of particle-hole and mesonic modes in eta-mesonic nuclei Author info D. Jido, Evgeni E. Kolomeitsev ... [et al.] Author Jido D. (25%)
Co-authors Kolomeitsev Evgeni E. 1970- (25%)
Nagahiro H. (25%)
Hirenzaki S. (25%)
Source document Nuclear Physics A. Vol. 811, no. 1-2 (2008), pp. 158-178. - Amsterdam : Elsevier B.V., 2008 Keywords Eta mesonic nucleus chiral-symmetry restoration Eta nucleon Language English Country Netherlands systematics 539.1 Annotation We study eta-meson properties in the infinite nuclear matter and in atomic nuclei with an emphasis on effects of the eta coupling to N∗(1535)-nucleon–hole modes. The N∗(1535) resonance, which dominates the low-energy eta-nucleon scattering, can be seen as a chiral partner of the nucleon. The change of the chiral mass gap between the N∗ and the nucleon in a nuclear medium has an impact on the properties of the eta-nucleus system. If the N∗-nucleon mass gap decreases with a density increase (chiral symmetry restoration) the calculations show the existence of the resonance state at the energy about 60 MeV and two bound eta-nucleus states with the binding energies about −80 MeV. These states can have strong effect on predicted cross sections of the 12C(γ,p)11B reaction with eta-meson production Public work category ADC No. of Archival Copy 26411 Repercussion category DOTE, A. - MYO, T. Double-pole nature of Lambda(1405) studied with coupled-channel complex scaling method using complex-range Gaussian basis. In Nuclear physics A. ISSN 0375-9474, 2014, vol. 930, pp. 86-103.
FRIEDMAN, E. - GAL, A. - MARES, J. eta-nuclear bound states revisited. In Physics letters B. ISSN 0370-2693, 2013, vol. 725, no. 4-5, pp. 334-338.
KELKAR, N. G. - KHEMCHANDANI, K. P. - UPADHYAY, N. J. - JAIN, B. K. Interaction of eta mesons with nuclei. In Reports on progress in physics. ISSN 0034-4885, 2013, vol. 76, no. 6.
Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika 
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Title Relativistic mean-field models with effective hadron masses and coupling constants, and rho(-) condensation Author info Evgeni E. Kolomeitsev, D. N. Voskresensky Author Kolomeitsev Evgeni E. 1970- (50%) UMBFP06 - Katedra fyziky
Co-authors Voskresensky Dmitri (50%)
Source document Nuclear Physics A. Vol. 759, no. 3-4 (2005), pp. 373-413. - Amsterdam : Elsevier B.V., 2005 Keywords atómová fyzika 1st order phase chiral-symmetry restoration vector-mesons Language English Country Netherlands systematics 539.1 Annotation We study relativistic mean-field models with hadron masses and coupling constants depending self-consistently on a scalar meson field. We demonstrate that by the field redefinition some models can be equivalently transformed into each other. Thereby the large variety of scaling functions for masses and couplings can be reduced to a restricted set of functions with a constrained dependence on a scalar field. We show how by choosing properly the latter scaling functions one may stiffen or soften the equation of state at high densities and simultaneously increase the threshold density for the direct Urca process without any change of the description of nuclear matter close to the saturation density. The stiffening of the equation of state might be motivated by recent neutron star mass measurements, whereas the increase of the threshold density for the direct Urca process (n(crit)(DU)) is motivated by the analysis of neutron star cooling data. The high value n(crit)(DU) also follows from the variational calculations of the A18 + delta v + UIX* Urbana-Argonne model. We demonstrate that if a rho meson is included in a mean-field model as a non-Abelian gauge boson, then there is a possibility for a charged rho-meson condensation in dense nuclear matter. We show that such a novel phase can be realized in neutron star interiors already for sufficiently low densities, typically similar to 3-4n(0), where no is the nuclear saturation density. In the framework of the relativistic mean field model the new phase arises in a second-order phase transition. The appearance of a rho(-) condensate significantly alters the proton fraction in a neutron star but changes moderately the equation of state. The neutrino emissivity of the processes involving a rho(-) meson condensate is estimated Public work category ADC No. of Archival Copy 26415 Repercussion category VOSKRESENSKAYA, M. D. - TYPEL, S. Constraining mean-field models of the nuclear matter equation of state at low densities. In Nuclear physics A. ISSN 0375-9474, 2012, vol. 887, pp. 42-76.
WILCZEK, Frank. The CBM physics book : compressed baryonic matter in laboratory experiments. Berlin : Springer-Verlag, 2011. Lecture notes in physics, vol. 814. ISBN 978-3-642-13292-6.
Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika unrecognised
Title Chiral symmetry, strangeness and resonances Author info M. F. M. Lutz, E. E. Kolomeitsev, C. L. Korpa Author Lutz Matthias F. M. (40%)
Co-authors Kolomeitsev Evgeni E. 1970- (30%) UMBFP06 - Katedra fyziky
Korpa C. L. (30%)
Action YITP Workshop "Nuclear Matter under Extreme Conditions" . workshop , Kjóto , 01.-03.12.2003 Source document Progress of Theoretical Physics Supplement. Vol. 156, no. (2004), pp. 51-71. - Tokyo : The Physical Society of Japan, 2004 Keywords chiral-symmetry restoration strangeness nuclear matter Form. Descr. články - journal articles Language English Country Japan Annotation We review the important role played by the chiral SU(3) symmetry in predicting the properties of antikaons and hyperon resonances in cold nuclear matter. Objects of crucial importance are the meson-baryon scattering amplitudes obtained within the chiral coupledchannel effective field theory. The formation of baryon resonances as implied by chiral coupled-channel dynamics is discussed. Results for antikaon and hyperon-resonance spectral functions are presented for isospin symmetric and asymmetric matter. URL Link na plný text Public work category ADC No. of Archival Copy 21536 Catal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Database xpca - PUBLIKAČNÁ ČINNOSŤ References PERIODIKÁ-Súborný záznam periodika 
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