Space-Time Quasicrystal Structures and Inflationary and Late Time Evolution Dynamics in Accelerating Cosmology

TL;DR

This paper introduces new cosmological solutions featuring space-time quasicrystal structures in modified gravity theories, which could model inflation, late-time acceleration, and structure formation, connecting condensed matter concepts with cosmology.

Contribution

It constructs novel off-diagonal, inhomogeneous cosmological models with quasicrystal-like configurations, integrating nonlinear self-organization and pattern formation into cosmological evolution.

Findings

Models can describe inflation and late-time acceleration.

Solutions incorporate memory effects from classical and quantum interactions.

Potential explanations for cosmological data via STQC configurations.

Abstract

We construct new classes of cosmological solutions in modified and Einstein gravity theories encoding space-time quasicrystal, STQC, configurations modelled by nonlinear self-organized and pattern forming quasi-periodic structures. Such solutions are defined by generic off-diagonal locally anisotropic and inhomogeneous metrics depending via generating and integration functions on all spacetime coordinates. There are defined nonholonomic variables and conditions for the generating/integration functions and sources for effective descriptions, or approximations, as "quasi" Friedmann-Lama\^itre-Robertson-Walker (FLRW) metrics. Such (off-) diagonal STQC-FLRW configurations contain memory on nonlinear classical and/or quantum interactions and may describe new acceleration cosmology scenarios. For special time-periodic conditions on nonlinear gravitational and matter field interactions, we can model at cosmological scales certain analogous of time crystal like structures originally postulated by Frank Wilczek in condensed matter physics. We speculate how STQC quasi-FLRW configurations could explain modern cosmology data and provide viable descriptions for the inflation and structure formation in our Universe. Finally, it is discussed systematically and critically how a unified description of inflation with dark energy era can be explained by (modified) cosmological STQC-scenarios.