@inproceedings{oai:niigata-u.repo.nii.ac.jp:00031008,
 author = {Ejiri, Shinji and Yoneyama, Hiroshi},
 book = {PoS - Proceedings of Science, PoS - Proceedings of Science},
 issue = {173},
 month = {Jul},
 note = {We study the thermodynamic singularities of QCD in the complex chemical potential plane by a numerical simulation of lattice QCD, and discuss a method to understand the nature of the QCD phase transition at finite density from the information of the singularities. The existence of singular points at which the partition function (￡) vanishes is expected in the complex plane. These are called Lee-Yang zeros or Fisher zeros. We investigate the distribution of these singular points using the data obtained by a simulation of two-flavor QCD with p4-improved staggered quarks. The convergence radius of a Taylor expansion of ln ￡ in terms of the chemical potential is also discussed., The XXVII Internaitonal Symposium on Lattice Field Theory, July 26-31, 2009 Peking University, Beijing, China},
 pages = {1--7},
 publisher = {SISSA},
 title = {Singularities of QCD in the complex chemical potential plane},
 volume = {LAT2009},
 year = {2009}
}