Universality Under Conditions of Self-tuning

Zhaoyi Li, Paolo Glorioso, Joaquin F. Rodriguez-Nieva

We study the far-from-equilibrium dynamics of isolated two-dimensional Heisenberg antiferromagnets. We consider spin-spiral initial conditions which imprint a position-dependent staggered magnetization (or Neel order) in the two-dimensional lattice. Remarkably, we find a long-lived prethermal regime characterized by self-similar behavior of staggered magnetization fluctuations, although the system has no long-range order at finite energy and the staggered magnetization does not couple to conserved charges. By exploiting the separation of length scales introduced by the initial conditions, we derive an analytical model that allows us to compute the spatial-temporal scaling exponents and power-law distribution of the staggered magnetization fluctuations, and find excellent agreement with numerical simulations using phase-space methods. The scaling exponents are insensitive to details of the initial condition, in particular, no fine tuning of energy is required to trigger the self-similar scaling regime. Compared with recent results on far-from-equilibrium universality on the Heisenberg ferromagnet, we find quantitatively distinct spatial-temporal scaling exponents, therefore suggesting that the Heisenberg model can host different universal regimes depending on the initial conditions. Our predictions are relevant to ultracold-atom simulators of Heisenberg magnets and driven antiferromagnetic insulators.

Annick Lesne, Michel Laguës

KUMI OOZAIKE

Building on John Archibald Wheeler's "participatory universe" and the Integrated Consciousness Studies (ICS) framework, this paper proposes that the fine structure constant ($\alpha \approx 1/137$) is the fundamental parameter governing the interface between consciousness and the electromagnetic field. We argue that the universe is not an observer-independent machine, but a self-actualizing system that requires conscious observation to transition from quantum potentiality to classical reality. This "Observer Imperative" explains the fine-tuning of physical constants: $\alpha$ is precisely tuned to the value that allows consciousness to interact with and sustain a stable material world. This framework suggests that human agency is not an accident of evolution, but a constitutional necessity for the existence of the cosmos itself. Observer Imperative, Participatory Universe, John Archibald Wheeler, Fine Structure Constant, 1/137, Quantum Decoherence, Consciousness-Matter Coupling, Inside-Out Universe, Self-Actualizing Cosmos

Amit Hagar

Charles V. Burton, H. Isaaks

A new variation on the Copenhagen interpretation of quantum me-chanics is introduced, and its effects on the evolution of the Universe are reviewed. It is demonstrated that this modified form of quantum mechanics will produce a habitable Universe with no required tun-ing of the parameters, and without requiring multiple Universes or external creators. 1