3202 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 presents a framework for detecting merging supermassive black hole binaries in pulsar timing array data using a complete waveform model that unifies inspiral, merger, ringdown, and memory signals, demonstrating successful parameter estimation and sky localization while highlighting the biases introduced by simplified memory burst approximations.
This paper proposes a higher-derivative action for dark matter that behaves as pressureless dust in homogeneous cosmological settings but generates nonzero pressure, energy flux, and anisotropic stress in inhomogeneous regions, thereby preventing caustic singularities while remaining consistent with the strong energy condition.
This paper derives the first universal, state-independent lower bounds on semi-local integrals of null energy flux in interacting quantum field theories across two and higher dimensions by leveraging the quantum null energy condition, strong subadditivity of entropies, and vacuum modular Hamiltonians.
This paper analytically and numerically demonstrates that reflectionless and echo modes in asymmetric Damour-Solodukhin wormholes share nearly identical asymptotic spectra along the real frequency axis, with reflectionless modes lying closer to the axis and producing more pronounced waveforms, thereby validating both perspectives as effective tools for describing the echo phenomenon.
This paper presents the first exact, non-singular black hole solution in General Relativity sourced by the phantom branch of a Dirac-Born-Infeld scalar field, which resolves the central singularity via kinetic stiffness and allows primordial black holes to survive evaporation as gram-scale relics, thereby opening a new mass window for dark matter.
Using numerical methods, this study computes leading-order effective field theory corrections to the Kerr metric across all sub-extremal spins, revealing that rapidly rotating black holes are the most sensitive probes for detecting new physics beyond General Relativity.
This paper demonstrates that 3d gravity on manifolds with end-of-the-world branes is described by the Virasoro minimal string random matrix model, explicitly verifying this correspondence for genus-zero cases and interpreting general path integrals as gravitational inner products within Virasoro TQFT.
This paper investigates quantum corrections to the Randall-Sundrum model in a near-extremal black brane background by incorporating Jackiw-Teitelboim gravity and Schwarzian modes, deriving the corrected Kaluza-Klein mass spectrum, and analyzing the impact on the Goldberger-Wise mechanism to provide new insights into cosmology and phase transitions.
This paper develops a quantum-optical framework for acceleration radiation from atoms falling into a Schwarzschild black hole interacting with a massive Proca field, demonstrating that while the thermal excitation balance remains universal, the absolute spectra and entropy flux are uniquely shaped by mass thresholds, polarization-dependent graybody transmissions, and vector-field-specific radiative area changes.
This paper presents the first comprehensive search for gravitational wave memory from supermassive black hole binary mergers and generic bursts using PPTA and EPTA data, employing full numerical relativity waveforms and advanced posterior approximation techniques to establish stringent upper limits on merger rates and burst strain amplitudes.