Reheating-ImprintedAxionInitialDataasaDiscriminant betweenPalatiniandMetricFormulations

This repository contains the source files for the manuscript“Reheating-Imprinted Axion Initial Data as a Discriminant between Palatini and Metric Formulations.” The work proposes a conservative discriminator between Palatini and metric formulations of gravity based on reheating-imprinted axion initial data. Assuming a common Einstein-frame derivative current portal, the analysis shows that formulation dependence can arise through differences in the post-inflationary reheating history, even when the portal itself is fixed. An analytic scaling description is developed for the effective axion initial angle and its dependence on reheating parameters and endpoint quantities. The manuscript also discusses the Assumption A framework, the role of endpoint data, and possible extensions beyond the common-portal setup. This upload contains the LaTeX source and related files for archival purposes.