2532 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 generalized parameter-space metrics for the -statistic that incorporate realistic effects like data gaps and varying noise floors to provide more accurate mismatch predictions, thereby potentially reducing the computational cost and improving the sensitivity of continuous gravitational-wave searches.
This paper demonstrates that excitations in spin-1 Bose-Einstein condensates can be mapped to emergent relativistic quantum field theories, including massive Proca fields, on curved acoustic spacetimes with bi- or tri-metric structures, thereby enabling the quantum simulation of cosmological particle production and spin-nematic squeezing through controlled magnetic field variations.
This paper presents and experimentally demonstrates an alternative optical frequency comb-based metrology approach for spaceborne gravitational wave observatories that utilizes carrier-carrier heterodyne frequencies to monitor pseudorange derivatives and suppress clock and laser noise without requiring modifications to the existing time-delay interferometry framework.
This paper demonstrates that while the standard and constraint definitions of a scalar field effective potential are equivalent in Minkowski spacetime, they diverge in de Sitter spacetime, with the constraint potential uniquely avoiding infrared convergence issues and serving as the correct formulation for stochastic Starobinsky-Yokoyama theory.
This paper proposes a method for detecting high-frequency gravitational waves (10 kHz–10 MHz) using two-dimensional ion crystals, where resonant excitation of parity-odd drumhead modes is transferred to collective spin rotation via optical dipole forces to generate squeezed spin states that surpass the standard quantum limit, with sensitivity scaling favorably with crystal size and ion number.
This paper demonstrates that the Dymnikova regular black hole can be consistently generated within unimodular gravity using standard Maxwell electrodynamics, where a dynamically emerging, radial-dependent vacuum contribution regularizes the geometry and yields a localized charge distribution with vanishing asymptotic charge.
This paper proposes an exact analytic metric describing rotating black holes embedded in dark matter halos with central density spikes, which is asymptotically flat, intrinsically anisotropic due to the spike-induced discontinuity, and generalizes previous spherically symmetric models to the rotating case.
This paper proposes a unified cosmological model where two scalar fields operate simultaneously, with one driving the universe's cyclic expansion and contraction while the other triggers a recurring epoch of inflationary expansion following each cosmological bounce.
This paper demonstrates that the Links--Gould polynomial successfully detects causality in all known examples where the Alexander--Conway polynomial fails, specifically by distinguishing Allen--Swenberg links from causally unrelated events, thereby suggesting it may fully capture causal relationships in (2+1)-dimensional spacetimes.
This paper constructs a static, spherically symmetric regular black hole featuring a Minkowski core and a degenerate inner horizon, which ensures sub-Planckian curvature in the large-mass regime and suppresses exponential mass inflation to a power-law growth, resulting in a finite internal mass at late times.