2615 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 a geometry-first formulation of the Standard Model to spontaneous symmetry breaking and Yukawa couplings, demonstrating how these mechanisms can be explained through purely geometric terms that offer a more general and transparent account of charge quantization than traditional symmetry-based approaches.
This paper investigates the backreactions of null matter loading onto the stable photon sphere in Weyl conformal gravity, revealing that the sphere's area remains invariant and that a critical loading threshold can generate an extremal horizon with AdSS geometry, a phenomenon distinct from standard nonconformal metrics.
This paper investigates the generation of primordial stochastic gravitational waves during the reheating period by calculating the perturbative decay of a coherently oscillating inflaton into massive spin-3/2 particles accompanied by graviton bremsstrahlung, demonstrating that the resulting gravitational wave spectra can provide insights into the microscopic physics of inflation.
This paper demonstrates that the thermal nature of Hawking radiation in gravity is the double-copy dual of charge thermality in non-abelian gauge theory, where the radiation spectrum is thermal in color charge eigenvalues rather than energy, emerging from the product of a Planck-like factor and a Wigner semicircle color phase space density.
This paper proposes a new worldsheet action for entanglement entropy in AdS/CFT that derives Einstein equations, interprets bit threads as string charge densities, and unifies the Susskind-Uglum conjecture, open-closed string duality, and ER=EPR by linking open and closed string charges to entanglement and Bekenstein-Hawking entropy respectively.
This study extends previous research on eccentricity-induced systematic biases in binary neutron star parameter estimation to include spin effects, revealing that while biases in chirp mass, mass ratio, and effective spin follow predictable quadratic trends with eccentricity, biases in effective tidal deformability exhibit a complex dependence on mass and spin parameters, potentially impacting neutron star property inference.
This study develops a rigorous, nonperturbative framework to quantify how mirror birefringence and polarization misalignment degrade sensitivity in axion-like particle searches, revealing that while misalignment effects can be mitigated through postselection, birefringence introduces a distinct high-mass resonance peak that necessitates careful consideration in high-precision optical-cavity experiments.
This study proposes a novel, tighter generalized entropic uncertainty relation for multi-measurements in many-body systems and applies it to Schwarzschild black holes to reveal the exact equivalence between entanglement and -norm coherence in GHZ-type states, while demonstrating how increasing Hawking temperature degrades quantum coherence and maximizes measurement uncertainty.
This paper demonstrates that strong non-gravitational interactions between dark matter and dark energy, which allow for negative energy densities, can naturally drive flat FLRW cosmologies to undergo either a Big Crunch turnaround or a non-singular bounce, and cyclic evolution in closed universes, without requiring modifications to general relativity.
This study investigates the evolution of inflationary black holes coupled to the cosmological background via a generalized McVittie geometry within Starobinsky's inflation model, finding that only those with a specific initial mass range can survive Hawking evaporation and avoid runaway growth to persist today as sub-solar mass objects.