Retrocausality and the Cosmic Microwave Background

We propose a novel retrocausal model in which the Cosmic Microwave Background (CMB) is not solely a relic of the early universe but may also contain imprints of present-day physics encoded via faster-than-light (FTL) particles. Building on principles from special relativity, quantum retrocausality, and the Wheeler-Feynman absorber theory, we examine how particles capable of superluminal propagation, such as tachyons or other hypothetical entities, could influence initial cosmic conditions by transporting energy and information backward in time. We extend the classical Boltzmann transport equation to include FTL interactions using a meta-time parameter tau, allowing bidirectional propagation in time and embedding causally consistent feedback loops into early-universe dynamics. We explore how this framework can account for anomalies in the CMB, such as the Cold Spot and hemispherical asymmetries, and show that retrocausal imprints may preserve global entropy while allowing local variations consistent with self-consistent cosmological loops. While highly speculative, this model offers a testable structure for retrocausality in cosmology, potentially providing alternative explanations for the origin of temporal directionality and the uniformity of the CMB without invoking inflation.