2649 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 unifies three major categories of mathematical results on quiescent big bang singularities by demonstrating that solutions satisfying recent general conditions for big bang formation indeed induce well-defined initial data on the singularity, thereby bridging the gap between stable formation proofs and geometric data construction.
This paper proposes a Generalized Cosmological Time framework that resolves conflicting time dilation observations by distinguishing between discrete, gravitationally shielded transients (SNe Ia and GRBs) that exhibit geometric path dilation and persistent thermal sources (QSOs) whose signals are masked by intrinsic selection effects.
This paper presents global 3D GRMHD simulations incorporating pair physics to reveal that electron-positron pairs in black hole accretion flows are primarily generated near the disk midplane and transported via advection to the corona and jets, where they can significantly exceed equilibrium values and potentially regulate coronal temperatures.
This paper analytically proves the black-hole Meissner effect for extremal Kerr--Bertotti--Robinson spacetimes by demonstrating that horizon-threading magnetic flux vanishes in the static limit through exact identities derived from the horizon's double-root structure, a result corroborated by geometric arguments and contrasted with other spacetime families.
This paper establishes novel decoupled energy estimates for tensorial non-linear wave equations by exploiting their specific structure and commutator terms, providing a framework to handle non-linearities from the Einstein-Yang-Mills system and other new structures that are incompatible with the classical Lindblad-Rodnianski -estimate.
This paper proposes a single-field inflation model where the inflaton is the dilaton of a confining gauge theory, deriving a Coleman--Weinberg potential constrained by the trace anomaly that, when coupled non-minimally to gravity, yields a plateau consistent with CMB data while predicting specific, testable deviations in spectral indices driven by the Migdal--Shifman logarithmic structure.
This paper demonstrates that the renormalized stress-energy tensor of a non-minimally coupled massive scalar field in a zero-tidal wormhole can satisfy the Morris-Thorne conditions within three specific regions of the mass and coupling parameter space, while simultaneously identifying two mass intervals where such conditions are impossible to meet regardless of the coupling strength.
This paper proposes a novel method for measuring the Hubble constant by combining strong lensing of gravitational-wave dark sirens with galaxy lensing data, demonstrating that just eight such lensed events can improve measurement precision by approximately 50% compared to 250 unlensed events.
This paper proposes an algebraic generator-history framework for Lorentzian topology change that identifies parity-odd conformal curvature as a unique, pre-quantum geometric diagnostic capable of tracking chiral generator dynamics without relying on new gravitational laws or endpoint-only invariants.
This paper demonstrates that anisotropic matter black holes characterized by parameters and can be identified as nonlinear electrodynamics black holes with power-index and charge term , enabling the derivation of rotating and extremal solutions that encompass specific cases like constant scalar hair, charged quantum Oppenheimer-Snyder, and Einstein-Euler-Heisenberg black holes.