Cosmon

Cosmon or cosmonium is a hypothetical form of matter where Universe would have been in dense form of matter as particle named cosmon. Idea was originally proposed by Georges Lemaître who suggested idea of 'primeval atom’ (L'Hypothèse de l'Atome Primitif) 1946. He illustrated the idea by imagining object 30 times larger volume of sun containing all matter of Universe. Its density would be around 10 15 g cm − 3 . In his view this exploded somewhere between 20–60 billion years ago. On this model matter wouldn’t been generated from singularity unlike in current big bang theory.

Idea of primeval “super-atom” lived on and it was developed forward by Maurice Goldhaber in 1956. In his proposal there would have been point, which had been called universon that would have collapsed into cosmon and anticosmon pairs. Goldhaber was wondering about why there is matter if equal amount of matter and antimatter was formed in beginning of big bang. One explanation for this is the asymmetry of matter meaning that there could have been slightly more matter than antimatter, for instance 1001 matter particles to every 1000 antimatter. In Goldhabers model cosmon and anticosmon would have flown apart and therefore explaining issue without asymmetry.

In 1989 Hans Dehmelt attempted to modernize idea of primeval atom. In this hypothesis Cosmonium would have been heaviest form of matter at the beginning of big bang.