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The Stage-IV galaxy surveys offer unprecedented opportunities to investigate fundamental cosmological and physical questions. However, extracting the maximum amount of cosmological information from the vast volumes of nonlinear and non-Gaussian data generated by these surveys remains a major challenge. To address this, it is essential to develop advanced statistical methods that go beyond the conventional power spectrum. Recently, we developed a novel method called Zel'dovich-inspired (ZI) transform. Our results demonstrate that the power spectrum of the ZI-transformed field can significantly tighten marginalized constraints on cosmological parameters. In this talk, I will present our latest progress on the ZI transform.

BIO

Yun Wang (王云), assistant professor at College of Physics, Jilin University. He received PhD from Jilin University in 2023. After that, he began his two-year postdoctoral research supported by “Dingxin Scholar (鼎新学者)” Program. With support from the “Talents Cultivation Program (培英计划)”, he will spend two years as a visiting researcher at Leiden University, beginning in January 2027. His research focuses primarily on computational cosmology and the large-scale structure of the Universe. He has published sixteen research papers in leading journals, including ApJ, A&A, MNRAS, and PRD. He also leads many research projects, such as Young Scientists Fund (C) of the NSFC, Theoretical Physics Research Project of the NSFC, and 76th General Program of the China Postdoctoral Science Foundation.

Host: Cheng Zhao