Neutron Diffusion and Nucleosynthesis in an Inhomogeneous Big Bang Model

This article presents an original code for Big Bang Nucleosynthesis in a baryon inhomogeneous model of the universe. In this code neutron diffusion between high and low baryon density regions is calculated simultaneously with the nuclear reactions and weak decays that compose the nucleosynthesis process. The size of the model determines the time when neutron diffusion becomes significant. This article describes in detail how the time of neutron diffusion relative to the time of nucleosynthesis affects the final abundances of He4, deuterium and Li7. These results will be compared with the most recent observational constraints of He4, deuterium and Li7. This inhomogeneous model has He4 and deuterium constraints in concordance for baryon to photon ratio eta = (4.3 - 12.3) X 10^{-10} Li7 constraints are brought into concordance with the other isotope constraints by including a depletion factor as high as 5.9. These ranges for the baryon to photon ratio and for the depletion factor are larger than the ranges from a Standard Big Bang Nucleosynthesis model.Comment: 7/15, added reference

Microscopic origin of low frequency flux noise in Josephson circuits

We analyze the data and discuss their implications for the microscopic origin of the low frequency flux noise in superconducting circuits. We argue that this noise is produced by spins at the superconductor insulator boundary whose dynamics is due to RKKY interaction. We show that this mechanism explains size independence of the noise, different frequency dependences of the spectra reported in large and small SQUIDs and gives the correct intensity for realistic parameters.Comment: 4 pages, no figure

Awry²: Making Space for Experimenting with Form

Could experimenting with form help us to counter – even crack – coloniality? We are hopeful. For us, experimenting with form shimmers with possibilities for (a) decolonising Psychology. Awry² (“Awry-squared”) is a section dedicated to experimenting with form within Critical Psychology and related fields. Aka, where Awry goes awry. In this Introduction, we summarise some shapeshifting possibilities for knowledge, knowing, knowers when experimenting with form. And we overview how, through Awry², we are experimenting with making a space for these possibilities to both breathe and be put to the test