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.
By replacing the Polyakov quantum sector with the dilaton-coupled FFN anomaly model in a two-dimensional regular black hole, this study demonstrates that late-time evaporation endpoints are strictly constrained to either a finite-radius remnant at or a highly specific soft-null branch with power-law decay , thereby excluding generic exponential or power-law null evaporation scenarios.
This paper investigates how the virtual exchange of gravitons in an optomechanical setup induces entanglement between a photon and a quantum rotor, demonstrating that the magnitude of this entanglement depends on the rotor's rotational state and produces observable differences in linear entanglement entropy for prograde versus retrograde photon motion.
This paper employs the covariant coframe/spin-connection formalism in teleparallel gravity to reconstruct static, spherically symmetric spacetime solutions sourced by Chaplygin and polytropic fluids, revealing diverse geometric branches ranging from stellar interiors and black holes to traversable wormholes while analyzing their horizon structures, energy conditions, and stability within a unified framework.
This paper proposes a parameter-free analytic model predicting that the gravitational wave spectrum from a head-on collision of equal-mass black holes transitions from a flat low-frequency bremsstrahlung to higher frequencies at the final black hole's lowest quasinormal mode, successfully estimating a 13.8% energy emission consistent with numerical relativity.
This paper investigates how a rotating black hole embedded in a Dehnen dark matter halo exhibits modified quasibound state spectra and superradiant scattering, demonstrating that the halo's density and profile parameters act as an environmental tuner that systematically shifts binding energies, alters instability thresholds, and narrows the superradiant amplification window.
This paper reinterprets the Hawking--Page transition through a thermodynamic vector field framework to derive universal ratios and barriers across various black hole geometries, while proposing a novel formulation involving categorical or non-invertible symmetry defects.
This paper introduces Ph-CDM, a General Relativity model utilizing a phantom scalar with a wrong-sign kinetic term to drive a smooth late-time transition from anti-de Sitter to de Sitter space, thereby offering a controlled mechanism to resolve cosmological tensions without resulting in a Big Rip.
This paper investigates the supersymmetry of charged and accelerating black holes within an , supergravity framework on a Bertotti-Robinson background by deriving Killing spinors, demonstrating BPS saturation to determine the black hole's mass and thermodynamics, and generalizing the extremal solution to include a cosmological constant.
This paper presents a formulation of stochastic inflation in full general relativity that extends beyond slow-roll and separate universe approximations by deriving gauge-invariant Langevin source terms for both scalar and tensor degrees of freedom, enabling their application in 3+1 numerical relativity simulations via the ADM and BSSN formalisms.
This paper establishes quantitative criteria for the validity of classical evolution in inflationary cosmological perturbations by analyzing Keldysh contributions to the bispectrum, demonstrating that non-linear interactions can be accurately described by classical dynamics even before horizon crossing and providing a rigorous foundation for using stochastic inflation to approximate full quantum evolution.