@article{oai:nagoya.repo.nii.ac.jp:00030064,
 author = {Ichiki, Akihisa and Okumura, Keiji},
 issue = {2},
 journal = {Physical Review E},
 month = {Feb},
 note = {The Ott-Antonsen ansatz is a powerful tool to extract the behaviors of coupled phase oscillators, but it imposes a strong restriction on the initial condition. Herein, an extension of the Ott-Antonsen ansatz is proposed to relax the restriction, enabling the systematic approximation of the behavior of a globally coupled phase oscillator system with an arbitrary initial condition. The proposed method is validated on the Kuramoto-Sakaguchi model of identical phase oscillators. The method yields cluster and chimera-like solutions that are not obtained by the conventional ansatz.},
 title = {Diversity of dynamical behaviors due to initial conditions: Extension of the Ott-Antonsen ansatz for identical Kuramoto-Sakaguchi phase oscillators},
 volume = {101},
 year = {2020}
}