@article{Physics.2.56, title = {Quasiparticle doppelg\"angers}, author = {Grayson, Matthew}, journal = {Physics}, volume = {2}, issue = {}, pages = {56}, numpages = {1}, year = {2009}, month = {Jun}, doi = {10.1103/Physics.2.56}, url = {http://link.aps.org/doi/10.1103/Physics.2.56}, publisher = {American Physical Society} }