2575 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 extends the dynamical systems toolkit for multiscalar dark energy by introducing new variables that disentangle kinetic couplings, enabling a systematic stability analysis that reveals genuinely non-geodesic attractors in exponential models while correcting previous misconceptions about non-geodesic fixed points in shift-symmetric scenarios.
This paper investigates the viability of teleparallel gravity models by deriving and analyzing the equations of motion for gauge-invariant cosmological perturbations to assess their stability and physical implications beyond background-level studies.
This paper establishes a covariant differential-form framework for defining non-closed scalar charges in four-dimensional Einstein-scalar-Gauss-Bonnet gravity, revealing a bulk obstruction that vanishes under shift-symmetry and providing a unified geometric interpretation of spontaneous scalarization and black hole thermodynamics through the Smarr formula.
This paper demonstrates that distinguishing between neutron stars and black holes in compact binary populations using only gravitational wave tidal measurements will require hundreds of events, a threshold unlikely to be met by current advanced detectors but achievable with next-generation facilities like the Cosmic Explorer and Einstein Telescope.
This paper presents asymmetric, regular, and asymptotically flat rotating wormhole solutions in Einstein-Dirac-Maxwell theory, supported by a complex non-phantom spinor field and electromagnetic fields, which connect two identical Minkowski spacetimes with potentially different masses and global charges while being fully determined by the throat parameter, spinor frequency, and electromagnetic coupling constant.
This paper proposes a tabletop quantum-optical simulator using entangled nonlinear biphoton sources to emulate Unruh-DeWitt detector dynamics, demonstrating that phase-controlled signal and idler modes can effectively reproduce relativistic phenomena such as vacuum-induced excitation, coherence harvesting, and field-induced entanglement.
This paper computes the first-order correction in quartic coupling to the entanglement entropy of a non-minimally coupled massive scalar across a Schwarzschild horizon, demonstrating that the resulting divergences are renormalized by bulk mass and Newton's constant counterterms while the finite correction vanishes for conformal coupling.
This paper presents a solution within Einstein-Dirac-Maxwell theory where an asymmetric wormhole supported by a complex spinor field and electromagnetic fields connects two universes with distinct physical parameters, effectively modeling a classical particle with spin by exhibiting Standard Model mass and charge at one end while displaying Planck-scale values at the other.
This paper proposes and validates a new thermodynamic inequality, , for rotating Anti-de Sitter black holes across various topologies and dimensions, demonstrating its role in preserving cosmic censorship and its compatibility with the reverse isoperimetric inequality.
This paper demonstrates that coherently combining a population of sub-threshold gravitational-wave signals from binary neutron star mergers can statistically constrain the maximum mass of hot, rapidly rotating neutron stars and the nuclear equation of state, potentially revealing evidence for first-order phase transitions in dense matter.