3773 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 investigates the spectral stability of total transmission modes in Tangherlini black holes under localized Pöschl-Teller bump perturbations, revealing that while purely imaginary modes remain stable, genuine complex modes exhibit significant migration even under weak disturbances, a finding consistent with prior pseudospectrum analyses.
This paper investigates geometrically thin accretion disc images in the static, axisymmetric q-metric spacetime using backward ray tracing, revealing that while the integrated flux remains nearly identical to the Schwarzschild case, increasing the quadrupole deformation parameter significantly shifts and broadens the brightness distribution and critical impact parameters, particularly when accounting for the changing monopole mass scale.
This paper demonstrates that the common practice of adding identical Gaussian or Pöschl-Teller bumps to both Schwarzschild Regge-Wheeler and Zerilli potentials violates Darboux isospectrality constraints, and it proposes two consistent alternative prescriptions—using the profile as a Darboux generator or solving for a partner via the Riccati equation—to avoid spurious axial-polar splitting in quasinormal modes.
This paper investigates the viability of conformally interacting dark energy (CIDE) models, which couple dark matter and dark energy via a scalar field, by constraining them with a comprehensive combination of early- and late-time cosmological data to assess their potential in alleviating the and tensions compared to the standard cosmological model.
Using the effective field theory approach, this paper derives the conservative two-body Lagrangian for charged black-hole binaries in Einstein-Maxwell-Dilaton theory through second post-Newtonian order, extending previous results to include gravitational, electromagnetic, and dilaton interactions to support future gravitational-wave tests of alternative gravity theories.
This paper investigates the quantum mechanical problem of a particle in an infinite potential well with slanted walls, deriving energy eigenvalues via Airy functions and demonstrating that the system exhibits unique asymptotic energy spacing and confinement behaviors that surpass standard models in fulfilling Bohr's correspondence principle.
This paper demonstrates that the Kasner exponents and chaotic transitions characterizing the near-singularity geometry of asymptotically AdS black holes can be uniquely determined from the large overtone behavior of their quasinormal frequencies, effectively allowing one to "hear" the shape of the singularity.
This paper constructs exact static, spherically symmetric charged solutions in four-dimensional non-polynomial quasi-topological gravity coupled to Born-Infeld electrodynamics, demonstrating that nonlinear electrodynamics can resolve the finite-radius curvature singularity of the vacuum branch to yield globally regular black holes with finite-curvature AdS cores and nontrivial inner-horizon structures.
This paper demonstrates that the Kerr-Bertotti-Robinson spacetime possesses an analytic extension forming an infinite chain of regions connected by wormholes that violate weak cosmic censorship, and reveals its instability against axisymmetric perturbations through growing quasinormal modes driven by chronology violation and superradiant amplification within a double-barrier potential.
By analyzing astrometric and spectroscopic data from multiple stars (S2, S55, S29, S38, and S301) orbiting the Galactic Center's supermassive black hole, this study significantly improves constraints on a Yukawa-like correction to Newtonian gravity, achieving a five-fold tighter bound on the coupling strength compared to previous single-star analyses and establishing the most stringent limits to date at both short and large distance scales.