3256 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 applies the Page-Wootters relational framework to the time-of-arrival problem by deriving a probability distribution through inverting the approach to determine clock readings upon particle arrival, a result that aligns with established methods while highlighting complexities in the formalism's interpretation as a theory of conditional probabilities.
This paper identifies a new instability in the microcanonical ensemble of 1/16-BPS black holes in driven by instanton condensation, which signals a previously overlooked dominant phase near the small black hole regime and offers a resolution to the location of the partially deconfined phase in the holographic dual.
This paper refutes a recent claim that twelve short-timescale microlensing candidates in the Andromeda Galaxy indicate a population of planetary-mass primordial black holes, demonstrating instead that all candidates are variable stars and providing no evidence for such black holes as dark matter.
This paper establishes a direct link between non-perturbative corrections to BPS black hole observables in flat spacetime and the dynamics of probe charged particles in the near-horizon geometry, demonstrating that the exact path integral of these probes reproduces the Gopakumar--Vafa integral and reveals how the black hole's physics is controlled by light D-brane states.
This paper numerically demonstrates that high-resolution optical imaging of neutron stars with thick accretion disks reveals distinct morphological differences from black hole shadows, specifically characterized by larger higher-order structures and more extended obscured regions, thereby providing a theoretical basis for distinguishing between these compact objects.
This paper demonstrates that specific dynamical wormhole solutions in Einstein's equations can persist through a cosmological bounce without undergoing topology change, remaining valid across contracting, expanding, and bouncing phases of the universe.
This paper resolves the thermodynamic limitations of event horizons by demonstrating that quasi-local horizons allow for a robust formulation of the first and second laws of black hole mechanics applicable to dynamical black holes arbitrarily far from equilibrium, thereby identifying black hole entropy with the area of marginally trapped surfaces rather than the event horizon.
This paper demonstrates that while curved spacetimes and exotic fields might theoretically enable extreme computational acceleration via relativistic effects, fundamental constraints from quantum field theory and quantum gravity ultimately limit the acceleration rate to be proportional to the system's energy scale, thereby establishing a physical bound on computation that parallels the Bekenstein entropy bound.
This paper uses numerical techniques on BFSS Matrix theory at strong coupling to demonstrate that the general relativistic force between two static objects emerges as an entropic force, thereby validating Verlinde's entropic gravity and the fuzzball paradigm while suggesting that black hole interiors are better described by AdS space rather than a traditional singularity.
This paper establishes a No-Go theorem proving that within analytic gravitational theories, treating quantum corrections solely as effective matter sources is insufficient to resolve singularities in gravitational collapse, thereby necessitating non-analytic action modifications or vanishing effective energy density at high densities for successful singularity resolution.