2489 papers
Quantum gravity represents the frontier where the very large meets the very small, attempting to unify Einstein's theory of gravity with the strange rules of quantum mechanics. This field explores the fundamental fabric of spacetime, seeking to understand how the universe behaves at its most extreme scales, from the heart of black holes to the moment of the Big Bang. Because these concepts often involve complex mathematics, they can feel distant to non-specialists, yet they hold the key to a complete picture of physical reality.
At Gist.Science, we bridge this gap by processing every new preprint in this category directly from arXiv. Our team provides both plain-language explanations and detailed technical summaries for each paper, ensuring that groundbreaking research is accessible to everyone, from curious students to seasoned researchers. Below are the latest papers in quantum gravity, offering fresh insights into the nature of our cosmos.
This paper explains the absence of late-time power law tails in numerical relativity waveforms of binary black hole mergers by demonstrating that oscillatory sources with high carrier frequencies and narrow spectral widths exponentially suppress the branch-cut excitation responsible for these tails, a mechanism that accounts for the difference between quasi-circular and eccentric or head-on collisions.
Using data from the LIGO-Virgo-KAGRA GWTC-4 catalog, this study presents the first detection of three distinct sub-populations of binary black holes with unique merger rates and delay-time distributions that depend on source properties like mass, mass-ratio, and spin, thereby ruling out a universal merger rate for all detected systems.
This paper proposes that cosmic acceleration arises not from a cosmological constant or new fields, but as a quantum mechanical effect caused by post-selecting the universe's wave function with a final boundary condition (a Chern-Simons soliton), which creates an apparent accelerating trajectory in a system with zero vacuum energy.
Using the harmonic superspace approach, this paper constructs linearized supersymmetric curvatures (generalizing scalar, Ricci, and Weyl tensors) expressed through fundamental analytic gauge prepotentials to serve as building blocks for off-shell supergravity invariants.
This paper proposes a string theory-inspired model where an evolving dark dimension links varying dark energy and dark matter masses through a scalar field, successfully fitting recent DESI and supernova data while naturally explaining apparent phantom behavior and satisfying Swampland and fifth-force constraints.
This paper demonstrates that the Husain-Kuchař model arises as the Carrollian limit of the Holst term within background-independent field theories and examines the resulting Carrollian symmetry features in its Hamiltonian formulation.
This paper investigates novel traversable wormhole solutions in Asymptotically Safe Gravity sourced by a Dekel-Zhao dark matter halo, demonstrating that quantum gravitational corrections can stabilize these structures and produce observable shadow radii consistent with Event Horizon Telescope data for Sgr A*.
This paper presents a new family of regular black hole solutions supported by a Letelier-Alencar string cloud and a rational Dagum-type distribution, analyzing their energy conditions, thermodynamic properties, and shadow constraints while demonstrating that Rényi non-extensive entropy stabilizes the system and eliminates standard phase transitions.
This paper presents a fully analytic, backreacted solution for the nonequilibrium evaporation of Schwarzschild–de Sitter black holes in two-dimensional dilaton gravity, demonstrating that irreversible heat flow from the black hole to the cosmological horizon drives monotonic entropy growth and naturally gives rise to entanglement islands and a Page curve within the anomaly-induced steady state.
This paper investigates the impact of positive and negative cosmological constants on the structural, equilibrium, and stability properties of dark energy stars in Finch-Skea spacetime, revealing that while the cosmological constant significantly influences compactness and stability, the model satisfies energy conditions for the Vela X-1 candidate within specific parameter ranges.