Shifts in the location of the first peak in the angular power spectrum of the CMB correspond to a quantity with this name becoming more negative.
Shifts in the location of the first peak in the angular power spectrum of the CMB correspond to a quantity with this name becoming more negative. One parameter partially named for this quantity is calculated as a sum of the partial derivatives of the Christoffel symbols and vanishes if parallel transport is path-independent. It is not lambda, but it appears in the Friedmann equations as a constant multiplied by c squared. Cosmic inflation theory solved the problem of apparent fine-tuning universe due the universe having a (*) non-zero amount of this quantity. The product of the two principal values of this is equal to the Gaussian type, and whether it is negative, zero, or positive corresponds to a hyperbolic, flat, or spherical universe. For 10 points, the Riemann and Ricci tensors describe what parameter that measures how not-flat something is.
Shifts in the location of the first peak in the angular power spectrum of the CMB correspond to a quantity with this name becoming more negative.
curvature (of the universe, or Riemann curvature tensor; prompt on "density" until Christoffel)