[Paper Review] The Plane of the Present and the New Transactional Paradigm of Time

John G. Cramer|ArXiv.org|Jul 8, 2005

Opinion Dynamics and Social Influence8 citations

TL;DR

This paper proposes a new transactional interpretation of time based on the 'plane of the present,' where quantum events are understood as transactions between past and future that occur simultaneously across spacetime. By reinterpreting quantum mechanics through advanced and retarded waves, it offers a causal, non-local framework that resolves time asymmetry and provides a unified view of temporal flow, with key implications for quantum foundations and the nature of reality.

ABSTRACT

This is a book chapter on the nature of time, from the point of view of the transactional interpretation of quantum mechanics.

Motivation & Objective

• To reframe the nature of time using the transactional interpretation of quantum mechanics.
• To resolve the asymmetry of time in quantum processes by introducing a spacetime-symmetric transactional framework.
• To provide a causal explanation for quantum measurement outcomes without wavefunction collapse.
• To unify past and future into a single, coherent temporal structure through the 'plane of the present'.
• To offer a foundational alternative to standard interpretations of quantum mechanics with implications for time's arrow and retrocausality.

Proposed method

• Applies the transactional interpretation (TI) of quantum mechanics, which involves advanced and retarded waves forming transactions.
• Introduces the 'plane of the present' as a spacetime surface where transactions occur, replacing the notion of a moving present moment.
• Uses the Wheeler-Feynman absorber theory as a foundation for time-symmetric interactions.
• Models quantum events as transactions that span both past and future, with the present as a dynamic boundary.
• Applies the formalism to quantum measurement, showing how probability amplitudes arise from the overlap of advanced and retarded waves.
• Reinterprets time evolution not as a sequence of states but as a holistic transaction across spacetime.

Experimental results

Research questions

• RQ1 How can time asymmetry in quantum mechanics be reconciled with time-symmetric field equations?
• RQ2 What is the role of the 'present' in a relativistic, quantum-mechanical framework?
• RQ3 Can quantum measurement be understood as a transaction between emitter and absorber across time?
• RQ4 How does the plane of the present serve as a physical locus for causal transactions?
• RQ5 What implications does a time-symmetric transactional model have for retrocausality and the arrow of time?

Key findings

• The transactional interpretation provides a causal, time-symmetric explanation for quantum events without requiring wavefunction collapse.
• The 'plane of the present' is identified as the physical locus where transactions occur, replacing the classical notion of a moving present.
• Quantum measurement outcomes emerge from the interference of advanced and retarded waves, consistent with standard quantum predictions.
• The model naturally accounts for the arrow of time through the boundary conditions of the universe, not through dynamical evolution.
• The framework supports retrocausal influences as a natural feature of quantum mechanics, consistent with experimental results.
• The time-symmetric transactional model offers a unified foundation for quantum mechanics and relativity, avoiding non-locality in the standard sense.