The complicated dynamics of elusive neutrinos left over from the Big Bang are captured in computer models presented by scientists
The mass of neutrinos is yet unknown. Scientists may be able to build hypotheses outside the mainstream particle physics model if the mass of neutrinos can be determined. It could also assist them in putting theories about the evolution of the universe to the test.
The impact of cosmic relic neutrinos on large-scale structure creation could be one way to measure this mass. To accomplish so, scientists must employ simulations and compare the results to observations. However, these simulations must be quite exact.
Particle-based N-body approaches are commonly used in standard simulations. When it comes to large neutrinos, the methodologies have flaws. The following are the disadvantages:
Shot noise is a random fluctuation that might affect simulation results.
Collisionless damping—a key process in which fast-moving neutrinos restrict the formation of structure in the Universe—cannot be accurately reproduced using particle-based approaches.
A research team from Japan has devised a solution to this problem in a recent study. The simulations that closely follow the behaviour of such cosmic relic neutrinos were published by scientists.
By studying the dynamics of large neutrinos, scientists were able to circumvent the problems outlined above. They directly solved the Vlasov equation, which is a key equation in plasma physics.