3949 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 derives general formulas for the quasi-normal mode frequencies of hairy black holes, modeled as vacuum black holes perturbed by an anisotropic fluid, by leveraging the correspondence between quasi-normal modes and geodesics.
This paper establishes the first observational constraints on causal nonlocal gravity extensions by combining Bayesian ringdown analysis of 17 binary black hole events from GWTC-3 with modified dispersion relation bounds, effectively ruling out specific infrared-extended spectral densities while identifying sub-millimetre gravity experiments as the most promising avenue for future direct tests.
This paper investigates the Einstein-Maxwell-Scalar theory with fractional coupling, demonstrating through static solutions and numerical simulations that strong coupling induces negative energy density and near-horizon geometric degeneration, thereby suggesting a classical mechanism for violating the weak cosmic censorship conjecture.
This paper establishes a systematic perturbative framework to quantify how generic dark matter halo profiles, such as Hernquist and Navarro-Frenk-White models, induce leading-order corrections to black hole shadow radii, finding that these deviations remain well within current observational limits from Keck, VLTI, and GRAVITY collaborations.
This paper proposes an interacting dark sector model with an analytical Hubble function that, when constrained by diverse late-time observational data including new DESI measurements, outperforms standard CDM and CDM models in fitting the data while offering a viable explanation for cosmic acceleration and a statistically lower value.
This paper applies the Hamiltonian formalism to analyze Hawking-Page phase transitions in BTZ, Reissner-Nordström, and Kerr-Newman black holes, demonstrating that the system's Hamiltonian corresponds to its thermodynamic free energy and revealing how electric charge and rotation enable the coexistence of black hole and thermal soliton states in off-shell configurations.
This paper investigates the sensitivity requirements for future space-based gravitational wave detectors (TianQin, LISA, and Ares) to detect beyond-general-relativity effects, concluding that detecting specific target signals from massive black hole mergers may necessitate noise improvements of 4 to 9 orders of magnitude depending on the signal type and population model.
This paper investigates dyonic nonlinearly scalarized black holes in Einstein-Maxwell-scalar theory, revealing that the coexistence of electric and magnetic charges enables a third branch of regular extremal black holes characterized by a sudden plunge in Hawking temperature, distinct from the cold and hot branches found in purely electric cases.
This paper establishes new curvature inequalities and rigidity results for constant mean curvature surfaces in Riemannian manifolds and spacetime constant mean curvature surfaces in Lorentzian geometry, demonstrating that these properties hold under weaker stability conditions and leading to flatness or Euclidean rigidity in the equality cases.
This paper demonstrates that while Andreev reflection in a superconducting analogue of a black hole horizon initially causes decoherence in a normal metal interferometer, increasing the coupling strength restores coherence through resonant tunneling, suggesting a novel gravitational analogue where virtual Hawking radiation enables the reemergence of quantum coherence near an event horizon.