Holographic entanglement negativity for conformal field theories with a conserved charge Parul Jain, Vinay Malvimat, Sayid Mondal and Gautam Sengupta Eur. Phys. J. C, 78 11 (2018) 908 Published online: 09 November 2018 DOI: 10.1140/epjc/s10052-018-6383-y