We are currently in the enthusiastic stage of understanding relativity and gravitation. WMAP and Planck data bring us to verify the inflationary scenario in cosmology; gamma-ray bursts are continuously providing us with misterious results; LHC will open a new stage in high-energy physics; and LISA path-finder will launch this year to open a new field of gravitational wave physics/astrophysics, to mention a few. Keeping in mind these wide-spread exciting topics, we plan to overview all these topics in relativity and gravitation, and trigger new visions for our future.

This workshop is supported by Rikkyo University Special Fund for Research (Tomohiro Harada), JSPS Grant-in-Aid for Creative Scientific Research No. 19GS0219 (Misao Sasaki, Tetsuya Shiromizu and Shinji Mukohyama) and JSPS Grant-in-Aid for Scientific Research (A) No. 21244033 (Misao Sasaki and Takahiro Tanaka).