We present an approximate treatment of the mixing between $\nu_{\tau}$ ($\bar\nu_{\tau}$) and a sterile species $\nu_s$ ($\bar\nu_s$) with a vacuum mass-squared difference of $\sim$ 102-103 keV2 in protoneutron stars created […]
We identify a geometric symmetry on the two-flavor Bloch sphere for collective flavor oscillations of a homogeneous dense neutrino gas. Based on this symmetry, analytical solutions to the periodic bipolar […]
