2693 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 proposes that a lunar-based laser interferometer, such as LILA, operating in the ultra-low-frequency gravitational band, can uniquely constrain the sound speed of dark energy by measuring real-time horizon-scale gravitational potentials, thereby offering a novel method to probe the microphysics of cosmic acceleration.
This paper demonstrates that the convergent summation of effective field theory corrections to the Schwarzschild metric requires UV locality, linking graviton scattering properties to perturbative applicability, and reveals that 1-loop logarithmic form-factor corrections dominate over tree-level contributions.
This paper employs a post-Newtonian effective field theory approach to analytically derive the reduced states of Unruh-DeWitt detectors near a tidally deformable quantum black hole, thereby characterizing the black hole's influence on entanglement harvesting, quantum discord, and Bell's nonlocality bounds while avoiding the computational complexities of conventional curved spacetime methods.
This paper proposes that treating time as a curled extra dimension allows the Taub-NUT metric to be dimensionally reduced to three spatial dimensions, thereby unifying gravitation and gravitomagnetism (associated with the NUT charge) in four dimensions through an analogy to Kaluza-Klein theory.
The paper proposes MORRIS, a novel tabletop experiment using a magnetically levitated sub-millimeter particle in a superconducting trap to search for non-Newtonian gravity via a Yukawa-like fifth force, with projected sensitivities that surpass existing bounds for screening lengths around 1 mm.
This study investigates the inflationary dynamics of non-minimally coupled gravity, revealing that while positive coupling models are unstable, negative coupling models can support stable inflation and are constrained by recent cosmological data to exhibit effects only slightly above the perturbative level, with viable parameter spaces remaining despite a general preference for classical gravity.
This paper proposes an inhomogeneous Einstein-de Sitter universe model where cosmic acceleration arises from structure formation rather than dark energy, demonstrating that this framework fits observational data as well as CDM while resolving the tension and yielding a consistent cosmic age.
This paper proposes that long-range quantum entanglement between fractionalized -charged semions in disordered zigzag graphene nanoribbons generates an emergent Anti-de Sitter-like spacetime geometry, thereby establishing a holographic framework for fractionalized degrees of freedom in quasi-one-dimensional systems even in the absence of conformal symmetry.
This paper investigates the phenomenological implications of the Generalized Extended Uncertainty Principle (GEUP) on rotating black holes by constructing a modified metric, analyzing thermodynamic and gravitational wave signatures, and using observational data from M87*, Sgr A*, and LIGO/Virgo to place stringent constraints on both ultraviolet and infrared quantum gravity corrections.
This paper investigates topological defects in higher-dimensional cosmological backgrounds by deriving the complete set of mode functions for a massive scalar field with general curvature coupling, expressing their angular components via associated Legendre functions and analyzing specific time-dependent behaviors in de Sitter and Milne universes.