3949 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 establishes Birkhoff rigidity in four-dimensional spherical vacuum gravity by deriving a local seed-to-Kerr-Schild route that demonstrates Schwarzschild is the unique spherically symmetric stationary vacuum Kerr-Schild geometry generated by a nowhere-vanishing optical seed.
This paper utilizes the covariant phase space formalism to derive conserved charges for supergravity formulated as a constrained BF theory, demonstrating that while translational charges vanish on-shell due to super-torsion constraints, the remaining boundary charges successfully reproduce the expected superalgebra.
This paper derives an exact static, spherically symmetric black hole solution within Born-Infeld-f(R) gravity and analyzes its thermodynamic properties, revealing novel behaviors that significantly deviate from standard general relativity predictions.
This paper proposes an analytic formalism for a non-minimally coupled inflationary model involving derivative interactions between gravity and a scalar field, demonstrating that it successfully generates scalar spectral index and tensor-to-scalar ratio values consistent with ACT and Planck observations across a wide range of inflaton potentials without encountering singularities in the slow-roll regime.
This paper demonstrates that a single scalar function, derived from the analytically continued membrane-paradigm pressure of the Kerr-Newman black hole, serves as a unified global detector that simultaneously encodes the locations of all critical geometric surfaces—including horizons, stationary limits, singularities, and asymptotic infinity—while also admitting an interpretation as a generalized van der Waals equation of state.
This paper derives the entropy covector field and analyzes macroscopic observables for collisionless relativistic kinetic gases around a Schwarzschild black hole, revealing significant morphological and asymptotic differences between rotating and non-rotating configurations driven by the role of angular momentum.
This study investigates how electric charge and Lorentz symmetry breaking jointly influence strong gravitational lensing and quasiperiodic oscillations around a charged black hole, utilizing observational data from supermassive black holes and microquasars to establish constraints on the Lorentz symmetry-violating parameter while revealing a compensatory effect between charge and symmetry breaking.
This paper rigorously demonstrates that the two common relativistic point-particle Lagrangians are not generally equivalent for arbitrary external potentials, as they yield different dynamical behaviors (chaotic vs. integrable) and Hamiltonian structures, though they coincide for electromagnetic interactions or vanishing potentials.
This study demonstrates that neutron star observables in hybrid equation-of-state models retain significant sensitivity to the choice of low-density nuclear matter models at commonly adopted transition densities (), implying that lowering the transition density is necessary to minimize systematic uncertainties and achieve model-independent predictions.
This paper extends the study of timelike entanglement inequalities in AdS-Vaidya holography to two subregions, confirming the validity of mutual information positivity and weak monotonicity for non-overlapping intervals while demonstrating that timelike strong subadditivity is generally violated even as subadditivity and the Araki-Lieb inequality hold.