Počet záznamov: 1
Hyperon puzzle and the RMF model with scaled hadron masses and coupling constants
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$a 10.1088/1742-6596/668/1/012064 $2 DOI 100 $a 20160122d2016 m y slo 03 ba 101 0-
$a eng 102 $a GB 200 1-
$a Hyperon puzzle and the RMF model with scaled hadron masses and coupling constants $f E. E. Kolomeitsev, K. A. Maslov, D. N. Voskresensky $z eng 330 0-
$a The equation of state of cold baryonic matter is studied within a relativistic mean-field model with hadron masses and coupling constants depending on a scalar field. We demonstrate that if the effective nucleon mass stops to decrease with a density increase at densities n > n > n0, where n0 is the nuclear saturation density, the equation of state stiffens for these densities and the limiting neutron star mass increases. The stabilization of the nucleon mass can be realised if in the equation of motion for the scalar mean-field there appear a term sharply varying in a narrow vicinity of the field value corresponding to the density n . We show several possible realizations of this mechanism getting sufficiently stiff equations of state. The appearance of hyperons in dense neutron star interiors is accounted for. The obtained equations of state remain sufficiently stiff if the reduction of the ϕ meson mass is incorporated. Thereby, the hyperon puzzle can be resolved 463 02
$1 001 umb_un_cat*0226484 $1 011 $a 1742-6588 $1 011 $a 1742-6596 $1 200 1 $a Journal of Physics: Conference Series $v Vol. 668 (2016), pp. 1-6 $1 210 $a Bristol $c IOP Publishing $d 2016 $1 710 02 $3 umb_un_auth*0250030 $a SQM 2015 $b medzinárodná konferencia $d 15. $e Dubna $f 06.-11.07.2015 606 0-
$3 umb_un_auth*0091255 $a stavová rovnica 606 0-
$3 umb_un_auth*0247155 $a relativistický model stredného poľa 606 0-
$3 umb_un_auth*0227471 $a neutrónové hviezdy 606 0-
$3 umb_un_auth*0247154 $a equation of state 606 0-
$3 umb_un_auth*0244211 $a relativistic mean-field models 606 0-
$3 umb_un_auth*0221939 $a neutron stars 615 $n 53 $a Fyzika 675 $a 533 700 -1
$3 umb_un_auth*0131258 $a Kolomeitsev $b Evgeni E. $f 1970- $p UMBFP06 $9 96 $4 070 $T Katedra fyziky 701 -1
$3 umb_un_auth*0244210 $a Maslov $b K. A. $4 070 $9 2 701 -1
$3 umb_un_auth*0160605 $a Voskresensky $b Dmitri $9 2 $4 070 801 $a SK $b BB301 $g AACR2 $9 unimarc sk T85 $x existuji fulltexy
Počet záznamov: 1