Nuclear Alpha-Particle Condensates

摘要: The \(\alpha\)-particle condensate in nuclei is a novel state described by product of \(\alpha\hbox{'s},\) all with their c.o.m. the lowest 0S orbit. We demonstrate that typical Hoyle \((E_{x}=7.65\,\hbox{MeV},\;0^+_2\) \(^{12}\hbox{C}),\) which plays crucial role for synthesis \(^{12}\hbox{C}\) universe. influence antisymmentrization on bosonic character \(\alpha\) particle discussed detail. It shown to be weak. aspects state, therefore, are predominant. conjectured states also exist heavier \(n\alpha\) nuclei, like \(^{16}\hbox{O},\;^{20}\hbox{Ne},\) etc. For instance \(0^+_6\) \(^{16}\hbox{O}\) at \(E_{x}=15.1\,\hbox{MeV}\) identified from theoretical analysis as being strong candidate \(4\alpha\) condensate. calculated small width (140 keV) \(0^+_6,\) consistent data, lends credit existence Hoyle-analogue states. In non-self-conjugated such \(^{11} \hbox{B}\) and \(^{13} \hbox{C},\) we discuss candidates clusters, composed triton’s, neutrons relationship condensation finite quartetting symmetric nuclear matter investigated help an in-medium modified four-nucleon equation. A nonlinear order parameter equation quartet derived solved infinite matter. qualitative difference pairing case pointed out.