3347 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 comprehensively analyzes late-time cosmic scenarios, particularly rips, within a holographic dark energy framework using both primitive and generalized Nojiri-Odintsov cutoffs, while evaluating the validity of thermodynamic laws and energy conditions to demonstrate that consistent alternatives to the Big Rip are unattainable with simpler cutoffs but possible with the generalized approach.
This paper proposes that astrophysical black holes (ABHs) without event horizons provide a more viable explanation for long-term galaxy quenching than classical black holes, due to their ability to generate significantly stronger accretion disk winds and more efficient feedback mechanisms.
This paper demonstrates that an inconsistency between the Pantheon+ supernova and DESI DR2 BAO datasets violates the distance duality relation, and when this discrepancy is accounted for, the previously claimed evidence for redshift-evolving dark energy disappears, yielding results consistent with a cosmological constant.
This paper generalizes the Aichelburg-Sexl stress-energy-momentum tensor for massless particles to include angular velocity using tensorial spherical harmonics and explores the potential manifestation of photon self-force as a frequency shift.
This study demonstrates that the ambiguity in determining whether the lower mass-gap companion in the GW230529 binary is a neutron star or black hole stems primarily from the event's low signal-to-noise ratio and associated waveform degeneracies, implying that future detections with higher signal-to-noise ratios will be necessary to definitively resolve the nature of such objects.
This paper establishes a finite-cutoff holographic framework for BTZ black holes within a circular cavity, unifying Brown--York quasilocal thermodynamics with -deformed CFTs by treating the cavity radius as both a thermodynamic control parameter and a dual renormalization group scale.
This paper investigates parity-violating symmetric teleparallel gravity within axion inflation, demonstrating how tachyonic instability amplifies one-handed primordial gravitational waves with a multi-peak spectrum that could be detected and characterized by the LISA-Taiji network, thereby offering a pathway to probe both inflationary dynamics and parity-violating gravity.
This paper investigates the thermodynamics of -dimensional Gauss-Bonnet black holes with Barrow entropy, revealing that while the coupling and fractal factor stabilize large five-dimensional black holes, they fail to alter the inevitable evaporation of six- and seven-dimensional counterparts due to persistently negative heat capacities.
This paper derives the conservative and dissipative dynamics of electrically charged black-hole binaries up to second post-Newtonian order, providing gauge-invariant expressions for key orbital observables and demonstrating consistency with recent post-Minkowskian results.
Using IllustrisTNG simulations, this study demonstrates that while local Hubble flow kinematics can constrain halo masses and the Hubble constant with reasonable accuracy, intrinsic environmental variance fundamentally limits their ability to distinguish between different dark energy models or specific dynamical extensions.