Stochastic Selection of Cosmological Constant in Chaotic Inflation: A String Theory Landscape Approach

- Target:  

  - 21-cm map of the reionization era (\( z \sim 6--20 \)) to measure fluctuations in primordial matter.  

  - Indirect Detection:  

    - If chaotic inflation is true, there will be non-Gaussian features in the HI distribution.  

- Sensitivity: Can detect variations \( \Lambda \) to \( \Delta \Lambda / \Lambda \sim 10^{-3} \).  

3.3 CMB-S4 (2030+)

- Ability  

  - Polarization sensitivity 10 better than Planck.  

  - Angular resolution \( 1' \)--\( 3' \).  

- Tested Model Predictions:  

  -Running spectral index (\( \alpha_s = dn_s/d\ln k \)) dari dinamika inflaton-stringy.