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 proposes that Planck Star Remnants, formed via nonsingular quantum bounces in Loop Quantum Cosmology that remain causally hidden and stable after black hole evaporation, constitute a viable candidate for dark matter consistent with current astrophysical constraints.
This paper experimentally demonstrates that a well-isolated cold-atom system can realize relational time by constructing an entropic clock from internal degrees of freedom, which successfully orders dynamical events and reproduces the system's evolution via an effective Schrödinger equation.
This paper proposes the Thermodynamic Split Conjecture, which asserts that black hole and cosmological horizon thermodynamics are fundamentally inequivalent in any UV-complete quantum gravity, and outlines a falsifiable observational test using tomographic entropy proxies to distinguish between these regimes and refine our understanding of cosmological horizon entropy.
This paper demonstrates that LIGO's constraints on the gravitational wave background rule out the formation of Planck star relics as dark matter from Gaussian initial conditions, leaving non-Gaussian primordial fluctuations as the sole viable formation channel.
This paper investigates how a non-minimal coupling between the Higgs field and gravity influences the dynamics of the scalaron as a dark matter candidate in -gravity, revealing that the interplay between this coupling and the scalaron's self-interaction can either suppress the trilinear interaction to enable a misalignment mechanism or dominate the relic density, thereby constraining the scalaron mass to the meV range and establishing a new upper bound on the product of the coupling and mass from LHC Higgs data.
This paper resolves the tension between JWST's observation of unexpectedly massive high-redshift galaxies and standard CDM predictions by demonstrating that refined halo models incorporating angular momentum and dynamical friction naturally reproduce the observed UV luminosity functions without requiring new physics or implausibly high star formation efficiencies.
This paper explores the cosmological consequences of the Thermodynamic Split Conjecture, demonstrating that the inequivalence between black hole and cosmological horizon thermodynamics can alter key early and late-universe phenomena while offering potential resolutions to the and tensions through modified Friedmann dynamics.
This paper proposes novel Solar System-scale searches for Primordial Black Holes, demonstrating that asteroid-to-dwarf-planet mass PBHs could be detected via pulsar timing array signatures and planetary mass PBHs via accretion flares from Kuiper Belt interactions, thereby opening a new observational frontier for mass ranges unconstrained by conventional cosmological methods.
This paper argues that classical gravity cannot mediate entanglement between massive particles, asserting that if gravitationally induced entanglement is observed, the force responsible must originate from a non-gravitational source rather than a classical gravitational field.
This paper proposes "Cosmological Teleodynamics," a game-theoretic statistical framework that reinterprets dark energy, dark matter, and cosmological tensions as emergent phenomena arising from the Universe's intrinsic nonlocal memory and systemic organization, thereby offering a unified, particle-free alternative to the standard dark sector.