Tetrapartite entanglement measures of W-class in noninertial frames

Torres-Arenas Ariadna J¹, López-Zúñiga Edgar O^{1, 2}, Antonio Saldaña-Herrera J^{1, 2}, Dong Qian¹, Sun Guo-Hua³, Dong Shi-Hai^{1, †}

(a) Whole entanglement (b) measures π₄ and Π₄ as functions of acceleration parameters r_c. The π₄ and Π₄ as functions of the parameter r_d are the same as above.