3803 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 proposes using the Transiting Exoplanet Survey Satellite (TESS) to detect dark matter subhalos by measuring their gravitational influence on stellar aberration, forecasting a sensitivity to observer accelerations as low as that could probe subhalo masses ranging from to .
This paper derives an explicit gauge transformation to reconstruct stationary and axially symmetric metric perturbations of Kerr black holes from the Debye potential into the standard Weyl-Lewis-Papapetrou form, while also analyzing mass and angular momentum perturbations and illustrating the method with examples involving thin disks and rotating particles.
This paper analyzes the role of the gauge connection in action-dependent Palatini gravity by decomposing it into shape and scale components, revealing a "moduli space of frictional field theories" where different splittings of these dynamics yield distinct Herglotz Lagrangians that all reproduce the same first-order Palatini gravity on-shell.
This paper proposes a two-stage "dark-to-black" super-accretion mechanism involving ultralight scalar dark matter clouds that first erases a supermassive black hole's initial spin via spherical accretion and then rapidly imprints a high, characteristic final spin determined solely by the boson mass and the black hole's final mass, offering a solution to the challenge of forming highly spinning supermassive black holes in the early Universe.
This paper proposes a tunable-size Unruh-DeWitt detector, realized by a tweezer-trapped atom coupled to a Bose-Einstein condensate via a multimode optical cavity, which overcomes the limitations of nonlinear dispersion in quantum simulators by using a momentum-selective interaction to filter non-phononic excitations and enhance relativistic signals at experimentally accessible accelerations.
This paper evaluates the phenomenological viability of non-minimally coupled Weyl connection gravity by deriving stringent lower bounds on its characteristic length parameter from Solar System tests and Sgr A* stellar orbits, revealing that the constraints differ drastically between two solution families due to the distinct scaling of their metric corrections.
This paper introduces \texttt{eGB-multi}, a fast and modular time-domain waveform package for LISA that incorporates post-Newtonian-accurate eccentric orbital dynamics to identify the regimes where the standard quasi-circular approximation for Galactic binaries becomes inadequate.
This paper demonstrates that the Weak Cosmic Censorship Conjecture remains protected for extremal Einstein-Maxwell-dilaton black holes up to third-order perturbations and is dynamically reinforced by the Swampland Distance Conjecture, which facilitates rapid discharge of overcharged configurations and relaxes the Weak Gravity Conjecture bounds.
This paper demonstrates that approximating null geodesics in low-regularity spacetimes via limits of affinely parametrized timelike geodesics can yield non-unique results that fail to define completeness, thereby motivating an alternative approach to Penrose-type singularity theorems based directly on timelike geodesics.
This paper reinterprets dynamical friction not as a distinct dissipative mechanism but as an intrinsic component of the gravitational self-force arising from a particle's interaction with its own induced environmental perturbations, thereby unifying the description of drag forces in both weak and strong gravitational fields for extreme-mass-ratio inspirals.