4035 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 develops a systematic Regge-theory framework for high-energy gravitational scattering of massive particles with multiple graviton emissions, unifying quantum and classical descriptions through exponential S-matrix and shock-wave formalisms to compute specific amplitudes and waveforms for ultra-relativistic Kerr black holes.
This paper constructs an exact magnetized generalization of the Zipoy-Voorhees spacetime using the magnetic Harrison transformation, revealing that while the resulting geometry is generically of Petrov type I, the external magnetic field induces a Lorentz shift that suppresses potential barriers to move the Innermost Stable Circular Orbit inward while slightly expanding the photon ring radius.
This paper demonstrates that introducing an auxiliary vector field inspired by the Stueckelberg mechanism to restore gauge symmetry resolves the singular Hamiltonian pathologies in spontaneous Lorentz-violating models of antisymmetric tensor fields, thereby rendering them viable for cosmological studies.
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.