@article{chau:cea-00819709, TITLE = {{Convexity and the quantum many-body problem}}, AUTHOR = {Chau, Huu-Tai and van Isacker, P.}, URL = {https://cea.hal.science/cea-00819709}, JOURNAL = {{Journal of Physics A: Mathematical and Theoretical}}, PUBLISHER = {{IOP Publishing}}, VOLUME = {46}, NUMBER = {20}, PAGES = {205302}, YEAR = {2013}, MONTH = May, DOI = {10.1088/1751-8113/46/20/205302}, KEYWORDS = {eigenvectors ; convex functions ; many-body theory ; Eigenvalues}, PDF = {https://cea.hal.science/cea-00819709/file/convexity_jpa_v2.pdf}, HAL_ID = {cea-00819709}, HAL_VERSION = {v1}, }