Anisotropic separate universe: Long-wavelength perturbations and conserved quantities

arXiv:2607.11814 · astro-ph.CO, gr-qc · Submitted 2026-07-13 · Read on arXiv

Daiki Saito, Atsushi Naruko

astro-ph.CO, gr-qc

Submitted: 2026-07-13

Comments: 33 pages

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Anisotropy — 17× in this paper · explained in 3 episodes
• Consistency — 9× in this paper · explained in 3 episodes
• Gauge Freedom — 5× in this paper · explained in 2 episodes
• Generalization — 5× in this paper · explained in 13 episodes
• Trace — 5× in this paper · explained in 2 episodes
• Bispectrum — 4× in this paper · explained in 3 episodes
• Quantum fluctuations — 4× in this paper · explained in 2 episodes
• Homogeneity — 2× in this paper · explained in 2 episodes
• Self-consistency — 1× in this paper · explained in 2 episodes
• Unified Framework — 1× in this paper · explained in 5 episodes

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