http://arxiv.org/abs/1908.03511
We investigate the importance of going beyond the mean-field approximation in the dynamics of collective neutrino oscillations. Specifically, we use measures of nontrivial correlations (otherwise known as `entanglement’) between the constituent neutrinos of the many-body system, such as the entanglement entropy and the Bloch vector of the reduced density matrix. The relevance of going beyond the mean-field is demonstrated by comparisons between the evolution of the neutrino state in the many-body picture vs the mean-field limit, for different initial conditions.
M. Cervia, A. Patwardhan, A. Balantekin, et. al.
Mon, 12 Aug 19
17/42
Comments: 17 pages of RevTeX, 9 figures