Theory of collapse of Manera in English

Abstract The quantum-to-classical transition remains one of the most debated open problems in modern physics. While decoherence theory successfully explains the suppression of interference in many experimental regimes, a clear operational distinction between reversible decoherence and irreversible collapse is still lacking, especially in mesoscopic and macroscopic interferometric systems. In this work, we propose a phenomenological modification of the Schrödinger dynamics that introduces an entropy-dependent non-linear term driving an irreversible transition from quantum superpositions to classical states beyond a well-defined threshold. The model predicts finite collapse times that depend on experimentally accessible parameters and naturally suppresses any revival of coherence once the transition has occurred. The theory is explicitly falsifiable: if coherence is observed to revive beyond the predicted threshold (≈10⁶ effective degrees of freedom), the model is ruled out. We compare the predicted collapse times with the observed loss of coherence in a wide range of interferometric and mesoscopic experiments, including cavity QED, optomechanical systems, superconducting circuits, and molecular interferometry. In all analyzed regimes, the model reproduces the observed orders of magnitude of the characteristic decoherence or collapse times. Finally, we discuss experimental scenarios—particularly involving large molecules such as porphyrins—where the model can be directly tested and potentially distinguished from standard decoherence-only descriptions.