| Speaker: | Sergey Ketov (Tokyo Metropolitan University) |
|---|---|
| Title: | MODIFIED SUPERGRAVITY and DYNAMICAL DARK ENERGY |
| Date (JST): | Tue, Dec 08, 2009, 13:15 - 14:45 |
| Place: | Seminar Room at IPMU Prefab. B |
| Related File: | 178.pdf |
| Abstract: |
Prospects of Dynamical Dark Energy as the geometrical (curvature) effect are discussed. Some great challenges, prejudices and lessons are critically considered from the theoretical perspective. The modified f(R) gravity, as the suitable model framework of describing the dynamical dark energy, is reviewed. We propose a new modified F(R) supergravity, as the supersymmetric extension of the modified f(R) gravity, and outline its explicit construction in curved superspace. The F(R) supergravity is capable to simultaneously describe the dynamical dark energy (quintessence) and dark matter with gravitino as the CDM particle. Some connections to String Theory and Loop Quantum Gravity are outlined too. |
