Tripartite entanglement dynamics for mixed states in the Tavis-Cummings model with intrinsic decoherence Xi-Wen Hou, Ming-Fang Wan and Zhong-Qi Ma Eur. Phys. J. D, 66 6 (2012) 152 Published online: 13 June 2012 DOI: 10.1140/epjd/e2012-30018-4