2489 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.
Using exact WKB analysis and numerical verification, this paper demonstrates that while Schwarzschild black holes exhibit convergent real parts for high-overtone quasinormal modes, parametrized deviations from general relativity generically cause these frequencies to diverge, highlighting spectral instability as a distinctive feature of modified gravity theories.
This paper demonstrates that exponential teleparallel gravity is a viable cosmological model by reconstructing its Hubble expansion history and confirming its consistency with recent observational data, including OHD, DESI DR2 BAO, gravitational-wave standard sirens, and Type Ia supernovae, through statistical analyses and dynamical stability checks.
This paper utilizes the Teleparallel Equivalent of General Relativity to compute the second-order gravitational energy of axial perturbations in regular black holes, establishing a direct link between their dynamical response via quasinormal modes and the energy carried by these fluctuations.
This paper presents a hybrid three-form dark energy model that successfully identifies stable scaling solutions tracking the background fluid and a dynamical mechanism to transition into a late-time accelerated phase distinct from a cosmological constant.
This paper proposes a Lagrangian extension to Newtonian gravity involving a second dynamical scalar field, derives its post-Newtonian potential and N-body equations, and constrains the model's free parameter using observational data from the Nordtvedt effect and Mercury's perihelion shift.
The paper rederives the cosmological supersymmetry breaking relation by applying a deformation to the Awada-Gibbons-Shaw local supersymmetry algebra within the context of de Sitter space.
This paper demonstrates that while neither homotopy to Minkowski space nor global hyperbolicity alone ensures conicality, causally simple, future cohesive spacetimes of dimension ()—including TIP spacetimes representing an observer's timelike past—do satisfy this property, thereby validating the conjecture for a physically relevant class of spacetimes.
This study reveals that granular mass perturbations from a cusp of stellar-mass black holes can induce significant timing residuals in pulsars orbiting Sagittarius A*, potentially hindering full-orbit solutions, but demonstrates that analyzing periastron data while accounting for frame-dragging effects can still enable precise measurements of the supermassive black hole's spin.
This paper introduces the first frequency-domain gravitational waveform models for quasi-circular neutron star–black hole binaries that incorporate higher-order modes and tidal effects, demonstrating improved accuracy over predecessors through numerical relativity comparisons and consistent parameter estimation on real observational data.
This paper investigates anomalous transport in equilibrium fermionic fluids coupled to Weyl-type nonmetricity, utilizing a formal descent analysis and transgression techniques to derive constitutive relations that reveal nonmetricity-mediated chiral separation effects driven by fluid vorticity and the Weyl magnetic field.