Product Information

Description

An annual survey of the gr-qc arXiv category, covering research published from September 2025 – August 2026. Built on a close-reading set of 100 papers and organised into 32 chapters, it maps the year by the field's research sub-directions.

Book framework (share of the year's output):

Gravitational Wave Cosmology and Dark Energy Constraints (52.3%) — Utilizes gravitational wave observations, including LIGO/Virgo and Pulsar Timing Arrays, to constrain cosmological parameters, dark energy models, and early universe physics.
Black Hole Dynamics and Quantum Field Theory in Curved Spacetime (40.4%) — Investigates classical black hole mergers, accretion, and shadows alongside quantum field theoretic effects like Hawking radiation and vacuum fluctuations in various spacetime geometries.
Holographic Principles and Modified Gravity Formalisms (5.4%) — Applies AdS/CFT correspondence, entanglement entropy, and geometric formalisms to analyze black hole thermodynamics and modified gravity theories like Einstein-Cartan models.
Extended Black Hole Thermodynamics and Entropy Laws (1.3%) — Explores generalized thermodynamic laws, entropy definitions (Wald, Rényi), and temperature concepts for black holes in modified gravity and non-equilibrium states.
Regular Black Holes and Singularity Resolution (0.3%) — Examines the interior structure and quantum resolution of Schwarzschild singularities, focusing on regular black hole models and their implications for spacetime continuity.
Numerical Relativity and Analytic Simulation Methods (0.2%) — Develops numerical techniques, causal set reconstructions, and analytic approximations for simulating relativistic hydrodynamics and black hole thermodynamics.
Foundational Issues in Quantum Gravity and Measurement (0.1%) — Addresses conceptual problems regarding the microscopic origin of spacetime, logical structures of physical laws, and Bayesian interpretation in quantum gravity contexts.

Each sub-direction is covered across three chapters — how it framed its questions, the strength of its key findings, and its open debates and frontiers — so the reader gets a traceable picture of what this part of the field actually produced over the year.