Three-tangle in non-inertial frame

Abstract

Let Alice, Bob, and Charlie initially share an arbitrary fermionic\nthree-qubit pure state, whose three-tangle is $\\tau_3^{(0)}$. It is shown\nwithin the single-mode approximation that if one party among the three of them\nmoves with a uniform acceleration with respect to the other parties, the\nthree-tangle reduces to $\\tau_3^{(0)} \\cos^2 r$, where $r$ denotes a\nstatistical factor in Fermi-Dirac statistics.\n