Relaxation-Driven Cyclic Cosmology (RDCC) v16.0: Precision Two-Sector Dynamics, Mirror Thermodynamics Refinements, and Enhanced GW Forecasts.

Relaxation-Driven Cyclic Cosmology (RDCC) v16.0: Precision Two-Sector Dynamics, Mirror Thermodynamics Refinements, and Enhanced GW Forecasts

This release (v16.0) refines and deepens RDCC v15.0 through precise mathematical modeling of mirror-sector physics, thermodynamically consistent cross-sector interactions, and detailed predictions for the stochastic gravitational wave background. No new paradigms or speculative extensions are introduced; instead, existing elements (CPT-conjugate mirror sector, bounce as CPT-fixpoint, gravitational coupling) are quantitatively sharpened and observationally focused.

Key upgrades include:
- Mirror-sector physics v2.0: recombination, structure formation, SMBH growth, and neutrino decoupling models
- Bounce–BH duality v2.1: thermodynamically deepened mapping between cosmological bounce and black hole interiors
- Precision GW cosmology v2.0: analytical mirror SGWB spectra, frequency-dependent knicks, cross-sector forecasts, and GW lensing by mirror halos
- Two-sector Boltzmann hierarchy v5.0: gravitatively coupled, with mirror-CMB anisotropies and cross-power spectra
- Multi-cycle evolution v2.0: entropy regulation and cycle stability analysis
- Observational pipeline v7.0: two-sector joint likelihoods and cross-probe tension mapping
- Simulation suite v7.0: two-sector hydrodynamics, mirror BH population synthesis, and SGWB light-cone simulations

RDCC remains strictly minimal: one effective complex scalar field Φ in a tilted double-well potential (tilt from Coleman-Weinberg corrections), standard Einstein gravity, and a gravitationally coupled CPT-mirror sector. No inflation, modified gravity, or additional fields required.

The model is designed for high testability in the 2035–2045 era, with falsifiable signatures in GW cross-correlations, ΔN_eff shifts, mirror-CMB power excess, and bounce imprints, observable with LISA O4, Einstein Telescope, SKA Phase 2, CMB-S4, and advanced PTA networks.

All previous versions, conceptual companions, and extensions are preserved and integrated in the unified synthesis document (linked as supplementary material).

This version builds on:

Relaxation-Driven Cyclic Cosmology (RDCC) v1.0: A Minimal Eternal Framework and Its Dynamical Realization: https://zenodo.org/records/18281686

Relaxation-Driven Cyclic Cosmology (RDCC) v2.0: A Minimal Eternal Framework with Dynamical Realization and Extensions: https://zenodo.org/records/18304744

Relaxation-Driven Cyclic Cosmology (RDCC) v5.0: Bounce-Matching Formalism, Mirror-Sector Dynamics, and Refined Gravitational Waves: https://zenodo.org/records/18307836

Relaxation-Driven Cyclic Cosmology (RDCC) v6.0: Black Hole Bounces as Local CPT-Fixpoints, Full Perturbation Transfer Matrix and Mirror-Sector Microphysics: https://zenodo.org/records/18312656

Relaxation-Driven Cyclic Cosmology (RDCC) v7.0: Quantum-Corrected Black Hole Bounces, Full Perturbation Transfer Matrix with Phase-Shift, and Mirror Microphysics  https://zenodo.org/records/18327084

Relaxation-Driven Cyclic Cosmology (RDCC) v8.0: Parameter Space Exploration, Data Confrontation, and Predictive Structure Formation  https://zenodo.org/records/18334398

Relaxation-Driven Cyclic Cosmology (RDCC) v9.0: Predictive Cosmology, Nonlinear Structure Formation, and Astrophysical Signatures  https://zenodo.org/records/18336237

Relaxation-Driven Cyclic Cosmology (RDCC) v10.0: Unified Cosmology, Full Simulations, and Observational Pipelines  https://zenodo.org/records/18336865

Relaxation-Driven Cyclic Cosmology (RDCC) v11.0: Entropy Dynamics, Mirror Thermodynamics, EFT Consistency, and Naturalness  https://zenodo.org/records/18341147

Relaxation-Driven Cyclic Cosmology (RDCC) v12.0: Precision Predictions, Multi-Probe Confrontation, and Quantum-Geometric Completion  https://zenodo.org/records/18346555

Relaxation-Driven Cyclic Cosmology (RDCC) v13.0: Quantum Completion, Global Consistency, and Predictive Cosmology  https://zenodo.org/records/18348450

Relaxation-Driven Cyclic Cosmology (RDCC) v14.0: Unified Quantum Gravity, Full-Cycle Simulation, and Multi-Messenger Precision Cosmology  https://zenodo.org/records/18351916

Relaxation-Driven Cyclic Cosmology (RDCC) v15.0: Mirror-Sector Cosmology, Hidden-Universe Gravitational Waves, and Two-Sector Evolution  https://zenodo.org/records/18358095

While the core of RDCC remains a structural, timeless framework with fixpoint character, this document explores a dynamical realization of the bounce mechanism to enable concrete, falsifiable predictions.

Related documents and the full RDCC ecosystem are available via Zenodo:
https://zenodo.org/records/18204087

Michael Lehmann
mi.lehmann@gmx.de