R. M. Wilson, Mahmud, K. W., Hu, A., Gorshkov, A. V., Hafezi, M., and Foss-Feig, M.,
“Collective phases of strongly interacting cavity photons”,
Physical Review A, vol. 94, no. 3, p. 033801, 2016.
J. Chen, Ji, Z., Ruskai, M. Beth, Zeng, B., and Zhou, D. - L.,
“Comment on some results of Erdahl and the convex structure of reduced density matrices”,
Journal of Mathematical Physics, vol. 53, no. 7, p. 072203, 2012.
A. M. Childs, Gosset, D., and Webb, Z.,
“Complexity of the XY antiferromagnet at fixed magnetization”,
Quantum Information and Computation, vol. 16, no. 1-2, pp. 1-18, 2016.