Null-Channel Overdamped Drift Test for Inertial Potential Detection Experimental Silence Bounds and Scale-Dependent Screening (Phenomenological Study)

Null-Channel Overdamped Drift Test for Inertial Potential Detection Experimental Silence Bounds and Scale-Dependent Screening (Phenomenological Study) This project presents a numerical investigation of a symmetry-protected null-channel overdamped stochastic system designed to constrain hypothetical inertial-potential-induced interactions at laboratory scales. The system geometry is explicitly constructed such that, under standard overdamped Langevin dynamics, the ensemble-averaged drift must vanish identically. Rather than seeking a positive signal, the protocol treats sustained experimental silence itself as the primary observable. Through extensive Langevin simulations, the study demonstrates that apparent finite-time drift naturally arises from stochastic fluctuations, while the distribution of drift slopes across independent realizations remains centered at zero. Under controlled numerical assumptions, long-time ensemble averaging defines an effective numerical silence floor, which can be used to illustrate how null behavior may translate into quantitative parameter constraints. Within a clearly stated phenomenological framework, this silence is mapped to an illustrative upper bound on an effective coupling parameter at centimeter scales. A scale-dependent screening parametrization is further explored to demonstrate one possible way such laboratory suppression could coexist with larger-scale phenomenological requirements. No claim of new physics is made. The primary contribution of this work is methodological: it demonstrates how carefully designed null-channel stochastic systems can convert experimental silence into structured, interpretable constraints under explicitly stated assumptions and limitations.