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.
The paper introduces QTAM (Q-Transform Amplitude Modulation), a novel, fully invertible, and lossless data compression method based on amplitude modulation principles that enables efficient, shift-invariant time-frequency analysis for robust gravitational wave signal denoising and disentanglement within low-latency processing constraints.
This paper demonstrates that superradiant instability in Kerr primordial black holes generally suppresses the production of dark radiation from Hawking-emitted gravitons by extracting angular momentum, thereby necessitating a revision of existing constraints on primordial black hole mass and spin in the presence of beyond-the-Standard-Model bosons.
This paper derives a generalized semiclassical asymptotic expansion for off-diagonal matrix elements of non-polynomial operators in gauge theories, demonstrating that organizing the expansion around the genuine off-diagonal Berezin symbol rather than diagonal expectation values preserves the full holomorphic structure and provides accurate results for volume and flux operators in Loop Quantum Gravity, particularly when coherent-state labels are well separated.
This paper presents a generalized numerical algorithm to compute the volume operator's action on diverse spin-network states in Loop Quantum Gravity, validating its high accuracy against analytical results and demonstrating how its quantum behavior converges to classical polyhedral volumes in the semiclassical regime while revealing unique magnitude variations for irregular geometries in the deep quantum regime.
This paper utilizes a generalized Ryu-Takayanagi formula rooted in Hamiltonian phase space to demonstrate that black hole Wald entropy arises from microstates distinguishable by surface charges, thereby providing a microscopic origin for the Page curve and resolving the information paradox by revealing hidden black hole hair.
This paper proposes that the second aspect of the cosmological constant problem—the origin of its specific small value—can be resolved within unimodular gravity by modeling our 4-dimensional spacetime as a brane in a higher-dimensional bulk subject to signature reversal symmetry.
This paper demonstrates that adding Kounterterms to Einstein-AdS gravity allows for the extraction of holographic conformal anomalies in arbitrary odd dimensions, offering a method where the action variation has a closed form and yields significant portions of the Weyl anomaly despite a mismatch with standard techniques for non-conformally flat boundaries.
This paper investigates the gravitational waveform degeneracy between quasi-circular binary systems and Lagrange three-body systems up to 0.5PN order, demonstrating that while stable triples can mimic binary waveforms with high overlap for nearly symmetric masses, the unique degeneracy occurring at 0.5PN involves an unstable configuration.
This paper presents a soothing, low-frequency audio representation of the Universe, generated by averaging gravitational-wave signals from approximately one million synthetic compact binary coalescence events expected in 2026.
This paper demonstrates that Unimodular Gravity enables the construction of exact traversable wormholes supported by a phantom scalar field and standard linear Maxwell electrodynamics, thereby eliminating the need for Non-Linear Electrodynamics typically required in General Relativity.