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Wednesday 2 Apr 2014, 16:00 → 19:30 ROK

E6-2동 물리학과 2502호 (KAIST)

카이스트 새물리 연구회 주최 입자물리 미니 워크샵

16:00 → 17:00 Lessons from the primordial gravitational waves

The recent detection of the B-mode polarization by the BICEP2 collaboration has profound implications regarding the primordial gravitational waves. After quickly reviewing basic elements, I discuss the current status of the inflationary theories in the light of BICEP2, and comment on future probes for further studies.

Speaker: Jinn-Ouk Gong (A)

17:00 → 17:30 coffee break

17:30 → 18:30 What did BICEP2 find? Inflaton or Axion

Recent BICEP2 results implicate the existence of the B-mode polarization on CMB. The B-mode polarization can be produced from not only gravitational wave generated at the inflation epoch but also birefringence. We investigate the CMB B-mode power spectrum both inflaton only and with birefrigence. We found that the current BICEP2 result prefer the additional birefrigence generated B-mode compared to one with just the inflaton field. In order to prove the existence of birefrigence, we need further E-B mode mixing signals from future surveys.

Speaker: Seok-Cheon Lee (KIAS)