- #1
sufive
- 23
- 0
Dear every specialists, I heard that BICEP2's observation r=A_t/A_s=0.2 n_t=0 indicate two things:
1) n_t=0 excludes ekpyrotic cosmological model (ECM) definitely because ECM predicts n_t=2
2) r=0.2 excludes almost all current string inflation model (SIM) such as KKLMMT because this observation requires inflaton field vary at leasts 10Mp while SIM do not allows such big range varyings
Who can tell me more about this two point of view
1) n_t=0 excludes ekpyrotic cosmological model (ECM) definitely because ECM predicts n_t=2
2) r=0.2 excludes almost all current string inflation model (SIM) such as KKLMMT because this observation requires inflaton field vary at leasts 10Mp while SIM do not allows such big range varyings
Who can tell me more about this two point of view