An Exploration of Cosmological Models which ease the Hubble Constant Tension

The universe is expanding, but the two methods of measuring the rate of this expansion, or Hubble Constant H$_{\mathrm{0}}$, are in contention with one another. Local Cepheid variables and the cosmic microwave background (CMB) power spectrum, produce expansion rates in different ways. The unresolved tension could be an indication there may be another model of physics. We use the Monte Carlo Markov Chain program CosmoMC to test the following models:$\omega $CDM model allows the density of dark energy to vary between -1 and -3; nCDM allows the flavor of neutrinos to vary from 2 to 7; MPC is a modified gravitational model, and we use LCDM as control. Finally, we compare our tests to others found in the literature and comment on future tests.