Using the relativistic mean-field model with nonlinear couplings between isoscalar and isovector mesons, we study properties of isospin-asymmetric nuclear matter. Not only vector mixing, $\omega_{\mu}\omega^{\mu}\mathbf{\rho}_{\nu}\mathbf{\rho}^{\nu}$, but also quartic interaction due to scalar $\sigma^{2}\mathbf{\delta}^{2}$, is taken into account investigate density dependence symmetry energy...

There is a long standing conjecture that there are at least \begin{document}$ n $\end{document} closed characteristics on any compact convex hypersurface id="M4">\begin{document}$ \Sigma in id="M5">\begin{document}$ \mathbb{R}^{2n} $\end{document}. In this paper, we provide som...

The recent measurement of the mass neutron stars (PSR J1614\ensuremath{-}2230, PSR J0348+0432, MSP J0740+6620) restricts lower limit $\ensuremath{\sim}2{M}_{\ensuremath{\bigodot}}$ maximum such compact stars, making it possible for dense matter to exist in massive stars. relativistic mean-field theory with parameter sets FSUGold including kaon condensation is used describe properties $\ensurema...

We classify the self-similar blow-up profiles for following reaction–diffusion equation with critical strong weighted reaction and unbounded weight: $$\begin{aligned} \partial _tu=\partial _{xx}(u^m) + |x|^{\sigma }u^p, \end{aligned}$$ posed $$x\in {\mathbb {R}}$$ , $$t\ge 0$$ where $$m>1$$ $$02$$ completing analysis performed in a recent work this very inte...

Cichoń’s diagram lists twelve cardinal characteristics (and the provable inequalities between them) associated with ideals of null sets, meager countable and $\sigma$-compact subsets irrationals. It is consistent that all entries are pairwise different (apart from $\operatorname{add}\mathcal{M}$ $\operatorname{cof}\mathcal{M}$, which provably equal to other entries). However, consistency proofs...

Abstract The paper has two parts, in the first part, we apply localisation technique to Rozansky–Witten theory on compact hyperkähler targets. We do so via reformulating as some supersymmetric sigma-model. obtain exact formula for partition function with Wilson loops $$S^1\times \Sigma _g$$ S <mml:m...

We present the results of the GRANAT/SIGMA hard X-/soft γ-ray long-term monitoring of the Galactic Center (GC) region concerning the source GRO J1744-28, discovered on 1995 Dec. 2 by CGRO/BATSE. SIGMA observed the region containing the source in 14 opportunities between 1990 and 1997. In two of these observing sessions, corresponding to March 1996 and March 1997, GRO J1744-28 was detected with ...