Fernando G. S. L. Brandão, Aram Wettroth Harrow. Product-state approximations to quantum ground states. In Dan Boneh, Tim Roughgarden, Joan Feigenbaum, editors, Symposium on Theory of Computing Conference, STOC'13, Palo Alto, CA, USA, June 1-4, 2013. pages 871-880, ACM, 2013. [doi]
Abstract is missing.