MULTI-$\bar K$ (HYPER)NUCLEI AND KAON CONDENSATION

2010 ◽  
Vol 19 (12) ◽  
pp. 2594-2599
Author(s):  
D. Gazda ◽  
J. Mareš ◽  
E. Friedman ◽  
A. Gal
Keyword(s):  
Mean Field ◽  
Hadronic Matter ◽  
Strong Interactions ◽  
Nuclear Model ◽  
Separation Energy ◽  
Relativistic Mean Field ◽  
Kaon Condensation ◽  
Wide Range ◽  
Energy Formula ◽  
Boson Fields

We report on recent relativistic mean-field calculations of multi-[Formula: see text] nuclei1,2 which were performed fully and self-consistently across the periodic table. The [Formula: see text] separation energy [Formula: see text] as well as the nuclear and [Formula: see text]-meson densities were found to saturate with the number of antikaons in the nuclear medium. Saturation appears robust against a wide range of variations, including the nuclear model used and the type of boson fields mediating the strong interactions. In addition, we have explored properties of kaonic hypernuclei — strange systems made of nucleons, hyperons and K- mesons. We observed saturation also in these objects. Since the [Formula: see text] separation energy [Formula: see text] does not exceed 200 MeV, multi-[Formula: see text] nuclei lie energetically well above multi-hyperonic nuclei and it is unlikely that kaon condensation could occur in strong-interaction self-bound hadronic matter.

STRANGE BARYONIC MATTER AND KAON CONDENSATION

2011 ◽  
Vol 26 (03n04) ◽  
pp. 567-569
Author(s):  
D. GAZDA ◽  
E. FRIEDMAN ◽  
A. GAL ◽  
J. MAREŠ
Keyword(s):  
Degrees Of Freedom ◽  
Mean Field ◽  
Hadronic Matter ◽  
Baryonic Matter ◽  
Separation Energy ◽  
Relativistic Mean Field ◽  
Density Distributions ◽  
Kaon Condensation ◽  
Universal Feature ◽  
Text Density

In this contribution we address the question whether kaon condensation could occur in strongly interacting self-bound strange hadronic matter. In our comprehensive dynamical relativistic mean-field (RMF) calculations of nuclear and hypernuclear systems containing several antikaons we found saturation of [Formula: see text] separation energy as well as the associated nuclear and [Formula: see text] density distributions upon increasing the number of [Formula: see text] mesons. The saturation pattern was found to be a universal feature of these multi-strangeness configurations. Since in all cases the [Formula: see text] separation energy does not exceed 200 MeV, we conclude that [Formula: see text] mesons do not provide the physical "strangeness" degrees of freedom for self-bound strange hadronic matter.

scholarly journals Kaon Condensation and Dilepton Production from Strange Hadronic Matter

1997 ◽  
Vol 50 (1) ◽  
pp. 23 ◽  
Author(s):  
T. Tatsumi ◽  
H. Shin ◽  
T. Maruyama ◽  
H. Fujii
Keyword(s):  
Early Stage ◽  
Mean Field Theory ◽  
Mean Field ◽  
Heavy Ion ◽  
High Energy ◽  
Hadronic Matter ◽  
Dilepton Production ◽  
Relativistic Mean Field ◽  
Kaon Condensation ◽  
Ion Collisions

We consider modification of kaons and the implications for dilepton production in the early stage of high-energy heavy-ion collisions. Constructing the equation of state of hadronic matter, including kaons as well as hyperons Λ with recourse to the relativistic mean-field theory, we study the production rate of dileptons. The possibility of K+ condensation is also revisited in this framework.

scholarly journals STRANGENESS PRODUCTION AT FINITE TEMPERATURE AND BARYON DENSITY IN AN EFFECTIVE RELATIVISTIC MEAN FIELD MODEL

2012 ◽  
Vol 21 (03) ◽  
pp. 1250028
Author(s):  
F. IAZZI ◽  
R. INTROZZI ◽  
A. LAVAGNO ◽  
D. PIGATO ◽  
M. H. YOUNIS
Keyword(s):  
Field Model ◽  
Chemical Potential ◽  
Mean Field ◽  
Baryon Density ◽  
Strangeness Production ◽  
Coupling Scheme ◽  
Mean Field Model ◽  
Relativistic Mean Field ◽  
Kaon Condensation ◽  
Wide Range

We study the strangeness production in hot and dense nuclear medium, by requiring the conservation of the baryon density, electric charge fraction and zero net strangeness. The hadronic equation of state is investigated by means of an effective relativistic mean field model, with the inclusion of the full octet of baryons and kaon mesons. Kaons are considered taking into account of an effective chemical potential depending on the self-consistent interaction between baryons. The obtained results are compared with a minimal coupling scheme, calculated for different values of the anti-kaon optical potential and with noninteracting kaon particles. In this context, we also consider the possible onset of the kaon condensation for a wide range of temperatures and baryon densities.

scholarly journals GROUND STATES AND EXCITED STATES OF HYPERNUCLEI IN RELATIVISTIC MEAN FIELD APPROACH

2012 ◽  
Vol 21 (07) ◽  
pp. 1250069 ◽  
Author(s):  
BIPASHA BHOWMICK ◽  
ABHIJIT BHATTACHARYYA ◽  
G. GANGOPADHYAY
Keyword(s):  
Field Theory ◽  
Excited States ◽  
Single Particle ◽  
Mean Field Theory ◽  
Mean Field ◽  
Separation Energy ◽  
Field Approach ◽  
Relativistic Mean Field ◽  
Wide Range ◽  
Particle Spectra

Hypernuclei have been studied within the framework of Relativistic Mean Field theory. The force FSU Gold has been extended to include hyperons. The effective hyperon–nucleon and hyperon–hyperon interactions have been obtained by fitting experimental energies in a number of hypernuclei over a wide range of mass. Calculations successfully describe various features including hyperon separation energy and single particle spectra of single-Λ hypernuclei throughout the periodic table. We also extend this formalism to double-Λ hypernuclei.

Nuclear structure and α-decay study of Og isotopes

2019 ◽  
Vol 28 (06) ◽  
pp. 1950041 ◽  
Author(s):  
R. R. Swain ◽  
B. B. Sahu ◽  
P. K. Moharana ◽  
S. K. Patra
Keyword(s):  
Heavy Element ◽  
Mean Field ◽  
Parent Nucleus ◽  
Shell Closure ◽  
Force Parameter ◽  
Α Decay ◽  
Relativistic Mean Field ◽  
Energy Formula ◽  
Text Element ◽  
Rmf Model

We have examined the binding energy, root-mean-square radii and two neutrons separation energies for the recently accepted super-heavy element [Formula: see text] established as Og using the axially deformed relativistic mean field (RMF) model with NL3 force parameter set. The calculation is extended to various isotopes of [Formula: see text] element, starting from [Formula: see text] till [Formula: see text]. The most stable isotope is found to be at [Formula: see text]. Also, the [Formula: see text]-decay energy [Formula: see text] and hence the half-lives [Formula: see text] is carried out by taking three different empirical formulae for the [Formula: see text]-decay chains of [Formula: see text] supporting the possible shell closure at daughter nuclei [Formula: see text] and/ or 184 and at parent nucleus of [Formula: see text] with [Formula: see text].

scholarly journals RELATIVISTIC MEAN FIELD STUDY OF ISLANDS OF INVERSION IN NEUTRON-RICH Z = 17–23, 37–40 AND 60–64 NUCLEI

2013 ◽  
Vol 22 (04) ◽  
pp. 1350018 ◽  
Author(s):  
S. K. SINGH ◽  
S. MAHAPATRO ◽  
R. N. MISHRA
Keyword(s):  
Binding Energy ◽  
Periodic Table ◽  
Mean Field ◽  
Quadrupole Deformation ◽  
Neutron Separation Energy ◽  
Mean Square ◽  
Separation Energy ◽  
Relativistic Mean Field ◽  
Field Formalism ◽  
Analysis Of Binding Energy

We study the extremely neutron-rich nuclei for Z = 17–23, 37–40 and 60–64 regions of the periodic table by using axially deformed relativistic mean field formalism with NL3* parametrization. Based on the analysis of binding energy, two neutron separation energy, quadrupole deformation and root mean square radii, we emphasized the speciality of these considered regions which are recently predicted islands of inversion.

scholarly journals Kaon condensation and equation of state in the relativistic mean-field theory

1994 ◽  
Vol 337 (1-2) ◽  
pp. 19-24 ◽  
Author(s):  
Tomoyuki Maruyama ◽  
Hirotsugu Fujii ◽  
Takumi Muto ◽  
Toshitaka Tatsumi
Keyword(s):  
Field Theory ◽  
Equation Of State ◽  
Mean Field Theory ◽  
Mean Field ◽  
Relativistic Mean Field Theory ◽  
Relativistic Mean Field ◽  
Kaon Condensation

scholarly journals Kaon condensation and lambda–nucleon loop in the relativistic mean-field approach

2005 ◽  
Vol 760 (3-4) ◽  
pp. 319-345 ◽  
Author(s):  
Tomoyuki Maruyama ◽  
Takumi Muto ◽  
Toshitaka Tatsumi ◽  
Kazuo Tsushima ◽  
Anthony W. Thomas
Keyword(s):  
Mean Field ◽  
Field Approach ◽  
Relativistic Mean Field ◽  
Kaon Condensation

scholarly journals PROTON DRIPLINE FOR ISOTONE N = 18, 20, AND 22 USING MODIFIED RELATIVISTIC MEAN FIELD (MRMF) MODEL

2019 ◽  
Vol 4 (1) ◽  
pp. 1-10
Author(s):  
Jenny Primanita Diningrum ◽  
Anto Sulaksono
Keyword(s):  
Fermi Energy ◽  
Calculation Result ◽  
Research Result ◽  
Mean Field ◽  
Separation Energy ◽  
Relativistic Mean Field ◽  
Proton Separation Energy ◽  
Position Prediction

Determining the position of one- and two-proton dripline for isotone of N = 18, 20, and 22 has been studied through Modified Relativistic Mean Field (MRMF). The model exemplifies three impacts, namely isovector-isoscalar coupling, tensors, and electromagnetic exchange through five parameter set variations. The position of one- and two-proton dripline for the isotones is predicted by applying two methods, which are two-proton separation energy, and Fermi energy. The research shows that the prediction of one- and two-proton dripline for isotone of N = 18, and N = 20 is positioned at Z = 22 and Z = 26 consecutively.  Then, the prediction of one- and two-proton dripline for isotone of N = 22 has two positions, Z = 26 and Z = 28. The calculation result indicates that the position prediction for isotone of N = 18, N = 20, and N = 22 is following the research result conducted by Nazarewicz with RMF+NLSH model [1]. Meanwhile, isovector-isoscalar coupling, tensors, and electromagnetic exchange do not affect massively for the position prediction of two-proton dripline. However, the three methods affect one-proton dripline.

scholarly journals Nonextensive statistical effects in the quark-gluon plasma formation at relativistic heavy-ion collisions energies

Open Physics ◽  
2012 ◽  
Vol 10 (3) ◽  
Author(s):  
Gianpiero Gervino ◽  
Andrea Lavagno ◽  
Daniele Pigato
Keyword(s):  
Quark Gluon Plasma ◽  
Mean Field ◽  
Relativistic Equation ◽  
Baryon Number ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Baryon Density ◽  
Hadronic Matter ◽  
Relativistic Heavy Ion Collisions ◽  
Relativistic Mean Field

AbstractWe investigate the relativistic equation of state of hadronic matter and quark-gluon plasma at finite temperature and baryon density in the framework of the non-extensive statistical mechanics, characterized by power-law quantum distributions. We impose the Gibbs conditions on the global conservation of baryon number, electric charge and strangeness number. For the hadronic phase, we study an extended relativistic mean-field theoretical model with the inclusion of strange particles (hyperons and mesons). For the quark sector, we employ an extended MIT-Bag model. In this context we focus on the relevance of non-extensive effects in the presence of strange matter.

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