@inproceedings {456, title = {Ground state entanglement entropy in a coupled spin-1/2 dimer with Dzyaloshinsky-Moriya interaction}, booktitle = {Proceedings of the 36th Samahang Pisika ng Pilipinas Physics Conference}, year = {2018}, month = {6{\textendash}9 June 2018}, pages = {SPP-2018-PB-52}, address = {Puerto Princesa City, Philippines}, abstract = {We study the ground state entanglement entropy in a spin-1/2 dimer with Dzyaloshinsky-Moriya (DM) and Heisenberg interactions in a Zeeman field. For a fixed magnitude of the DM vector, the ground state entanglement entropy increases from the ferromagnetic to the anti-ferromagnetic limits of the Heisenberg interaction. In the case of anti-ferromagnetic interactions with strong Zeeman splitting there exists a non-zero value of the DM magnitude that minimizes ground state entanglement. A region of the ground state phase diagram is also described where a critical DM magnitude separates separable and maximally entangled ground states.}, url = {https://paperview.spp-online.org/proceedings/article/view/SPP-2018-PB-52}, author = {Rafael S. dela Rosa and Francis N. C. Paraan} }