Early Dark Energy from LVS Axions and Implications for the Hubble Tension

We investigate whether axion-like degrees of freedom arising in the Large Volume Scenario (LVS)can provide a natural realization of Early Dark Energy (EDE). We adopt a generalized axion po-tential and show that a hierarchical LVS axion spectrum can support a transient early-time energyinjection while allowing rapid post-recombination dilution. For a critical redshift zc ∼ 3000, the re-quired effective mass scale is mϕ ∼ 5 × 10−28 eV, with a peak EDE fraction of order fEDE ∼ O(0.1).We derive the corresponding background evolution and show that the resulting modification of thepre-recombination expansion rate can reduce the comoving sound horizon. This identifies LVS axionsas a natural microscopic source of EDE and motivates a broader multi-epoch dark-sector frameworkin which early-time energy injection and late-time acceleration arise from the same compactificationstructure.