A non-local hidden-variable (NLHV) design called the Cordus conjecture is applied to address the ontological question: What is time? A novel multi-level concept emerges for time, and the origin of the arrow is also explained. According to this theory, time at the fundamental level consists of the frequency oscillations of matter particules, and thus time is locally generated and a property of matter. At the next level up, that of the assembly of matter particles via bonds and fields, the interconnectedness creates a patchwork of temporal cause-and-effect, and hence a coarser time. Entropy, classical mechanics, the arrow, and our perception of time are shown to all arise at the transition from coherence to decoherence. Time at the macroscopic level is therefore a series of delayed irreversible interactions (temporal ratchets) between sub-microscopic domains of matter, not a dimension that can be traversed in both directions. The theory extends to time at the level of organic life. It explains how the human-perception of time arises at the cognitive level, and why we perceive time as universal. This theory suggests that time is all of particle-based vs. spacetime, relative vs. absolute, local vs. universal, depending on the level of assembly being considered. However it is also none of those things individually.
A non-local hidden-variable (NLHV) design called the Cordus conjecture is applied to address the ontological question: What is time? A novel multi-level concept emerges for time, and the origin of the arrow is also explained. According to this theory, time at the fundamental level consists of the frequency oscillations of matter particules, and thus time is locally generated and a property of matter. At the next level up, that of the assembly of matter particles via bonds and fields, the interconnectedness creates a patchwork of temporal cause-and-effect, and hence a coarser time. Entropy, classical mechanics, the arrow, and our perception of time are shown to all arise at the transition from coherence to decoherence. Time at the macroscopic level is therefore a series of delayed irreversible interactions (temporal ratchets) between sub-microscopic domains of matter, not a dimension that can be traversed in both directions. The theory extends to time at the level of organic life. It explains how the human-perception of time arises at the cognitive level, and why we perceive time as universal. This theory suggests that time is all of particle-based vs. spacetime, relative vs. absolute, local vs. universal, depending on the level of assembly being considered. However it is also none of those things individually.
This work proposes that time is not a fundamental cause but an emergent consequence of matter’s self-organization. At the deepest level, matter and spacetime possess complete temporal symmetry, allowing bidirectional time. As matter becomes increasingly complex — from particles to macroscopic structures and living systems — this symmetry progressively breaks. The breaking of temporal symmetry gives rise to irreversibility, memory, decoherence, the arrow of time, and the emergence of classical reality. Within this framework, classical matter represents only a tiny, chiral, asymmetrical fraction of a deeper racemic quantum domain existing in dual time. The visible universe arises as a projection — a “shadow” — of this temporally symmetric metastructure. From this perspective, relativity may be interpreted as a special, effectively classical case of quantum mechanics, emerging from higher-order organizational processes. Temporal self-organization thus provides a unified conceptual pathway linking quantum mechanics, relativity, matter–antimatter asymmetry, and the cosmological constant. Although this work does not claim to provide a complete unified theory, it offers a conceptual reorientation: a shift that replaces numerous disconnected explanatory “epicycles” with a simpler underlying principle based on temporal self-organization.Within this perspective, several seemingly independent phenomena — including the arrow of time, matter–antimatter asymmetry, decoherence, and the small positive cosmological constant — may be understood as different manifestations of a single fundamental process: the breaking of an underlying bidirectional temporal symmetry.
The problem of time’s arrow is (roughly) to understand why macroscopic physical processes typically evolve in a specific direction (the one we call “the future”) even though the underlying laws of physics describing the individual microscopic systems are time-reversal invariant. The standard answer to this problem is given by Boltzmann’s explanation of the II law of thermodynamics: a classical system starting in a non-equilibrium state spontaneously (i.e. with a high level of probability) tends towards equilibrium, thus implementing an irreversible process. However, this explanation has two drawbacks: 1. it needs a further assumption on the entropy of the initial state of the universe (past hypothesis); 2. microscopic systems (e.g. molecules in a box) should be represented as quantum states and not classical states. In this talk, I want to propose a different hypothesis to explain the origin of time’s arrow, based on quantum mechanics, specifically on decoherence theory. Differently from isolated systems, open quantum systems described by decoherence theory showirreversible behavior, as they evolve towards decoherence and von Neumann entropy increase. Is this behavior a sign of genuine irreversibility? And, if so, can this be linked to thermodynamic irreversibility?
Coherence, Entropy, and the Arrow of Time: Why Time Has a Direction in a Phase Ontology (Phase Ontology — Part V) proposes a phase-centered explanation for one of physics’ strangest asymmetries: microscopic laws are largely time-symmetric, yet macroscopic reality is not. Cups shatter but do not reassemble; heat flows from hot to cold; correlations decay; memories accumulate. This paper argues that the arrow of time becomes conceptually clear once phase coherence is treated as ontologically primary. In this framework, time is not fundamental. It emerges operationally from countable phase evolution in physical clocks (all clocks are oscillators) and from synchronization between systems. A shared “global time” is therefore a relational structure sustained by coherence, not a background substance that governs dynamics. The paper then reframes entropy growth as the loss of accessible phase information in open systems. As systems interact with environments that contain many degrees of freedom, phase correlations disperse outward and become physically inaccessible, even if not destroyed in principle. Decoherence is elevated from a technical detail to the central engine of macroscopic irreversibility: reversing decoherence would require re-phasing an astronomically large environment, which is practically impossible. Building on Part III, the paper also interprets measurement as phase locking: once a macroscopic coupling stabilizes one local configuration, alternative phase possibilities are effectively dispersed into the environment. Classical definiteness and temporal irreversibility are thus treated as two faces of the same process—coherence flow. This manuscript is Part V of a seven-part series (Parts I–VII). It connects Parts I–IV to time asymmetry and points forward to Part VI (mass, inertia, gravitation) and Part VII (experimental implications and falsifiability).
Emergent Causality Through Decoherence An imaginary hypothesis, not a theory. What if causality were not fundamental? What if it emerged, like temperature, from the degree of decoherence in a system? This hypothesis proposes that there is no single causality, but three regimes of the same process. The core idea:There is no single causality. There are causalities that emerge according to the degree of decoherence in a system. In other words: causality is not a property of the universe. It is a property of the level of description. The three regimes: Quantum causality (zero or low decoherence). The system is isolated. What exists are pure correlations: entanglement, superposition. There is no causality in the classical sense. There is correlation without direction. There is no defined "before" or "after." Relativistic causality (medium decoherence). The system interacts with the environment, but not completely. There is a causal structure defined by spacetime. There is causality, but it is relative: it depends on the observer. Classical causality (high decoherence). The system is fully coupled to the environment. It is classical. There is absolute, local causality: cause → effect, without ambiguity. The mechanism: decoherence.The more degrees of freedom interact with the system, the more decoherence. More decoherence → more classical → more causal. There is no "line" that is crossed. There is a continuum. Causality emerges gradually, just as temperature emerges from the number of particles. Why this makes the three regimes fit together: They are not separate levels. They are degrees of the same process. Time emerges together with causality. Without decoherence, there is no defined time. With decoherence, irreversibility emerges. And with it, the arrow of time. Relativity is the intermediate regime. What it would resolve: The problem of time: it emerges with decoherence. The arrow of time: it is the irreversibility of decoherence. The relativity–quantum clash: it is not a clash. They are different regimes of the same process. Causality: it is not fundamental. It is emergent. What it does not resolve: What decoherence exactly is. How to quantize gravity. Why there is decoherence. The information paradox. The label (important):This is an imaginary hypothesis, not a theory. It is coherent with what we know, but it is not demonstrated. It lacks mathematics, predictions, and confirmation. It does not say that time does not exist. It says that time could emerge. It does not say that causality does not exist. It says that causality could emerge. All of this, if one takes decoherence seriously, without adding anything else. But no one has demonstrated it. That is why it is a hypothesis, not a theory. A note on the anchor:This hypothesis does not invent its premise. It takes it from established physics: quantum mechanics already treats information as correlation, not as substance. Entanglement is pure correlation. Decoherence is entanglement with the environment. If information is always relational, then causality could be relational too. Related work: "Measure Reinforcement: Emergent Causality From Quantum Interactions" (Zenodo, 2025). Proposes emergent causality from quantum interactions without predefined time. Difference: includes a conscious observer. This hypothesis does not. Here decoherence is the mechanism, without consciousness. "Spacetime as an Emergent Causal Structure: A Quantum Mechanical Perspective" (Preprints.org, 2026). Derives proper time from the degree of decoherence. Difference: focuses on time, not causality as a regime. This hypothesis unifies the three regimes (quantum, relativistic, classical) into a single continuum. "Causal Space-Time: Emergent Physics from Causality" (2010). Proposes that physics emerges from a causal network. Difference: opposite direction. There causality is fundamental; here it emerges from decoherence. "Radial Coherential Dynamics: Emergent Causality" (2025). Proposes collapse as a decoherence front that generates time and causality. Difference: it is radial and has specific predictions. This hypothesis is more general: it describes causality as a regime of description, not as a radial process. The gap: no one has unified the three regimes (quantum, relativistic, classical) into a continuum parametrized by the degree of decoherence, nor has proposed that causality is a property of the level of description, not of the universe. Keywords: decoherence, emergent causality, quantum mechanics, foundations of physics, emergent time, quantum-classical transition.
The concept of time presents a profound challenge at the intersection of quantum mechanics and thermodynamics. While fundamental microscopic laws are largely time-symmetric, macroscopic phenomena universally exhibit a distinct thermodynamic arrow of time, characterized by increasing entropy. This paper explores the hypothesis that quantum entanglement plays a crucial role in the emergence of this thermodynamic arrow. We review how the entanglement between a quantum system and its environment leads to decoherence, effectively driving the system towards a state of higher entropy and classical-like behavior. By analyzing concepts such as von Neumann entropy, entanglement entropy, and the Page-Wootters mechanism, we propose a theoretical framework where the degradation and spreading of entanglement act as the underlying mechanism for the perceived unidirectional flow of time. This approach offers a potential resolution to the "problem of time" in quantum gravity and provides a unified perspective on the genesis of irreversibility from the inherently reversible laws of quantum mechanics. We discuss the implications of this entanglement-driven temporal emergence for our understanding of the universe's initial low-entropy state and the fundamental nature of reality.
In this paper I consider the concept of time in a general way as daily human time and then within physics with relation to mathematics. I consider the arrow of time and then focus the attention on quantum mechanics, with its particular peculiarities, examining important concepts like temporal asymmetry, complexity, decoherence, irreversibility, information theory, chaos theory. In conclusion I consider the notion of time connected to a new theory in progress, called “Primordial Dynamic Space” theory.