⚛️ general relativity
Thermodynamic Remnants in Black-hole Evaporation
The paper argues that the black-hole remnant scenario emerges naturally from Hawking's original computations without requiring additional assumptions.
⚛️ Category
gr-qc
3824 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.
⚛️ phenomenology
Conditional variational autoencoders for cosmological model discrimination and anomaly detection in cosmic microwave background power spectra
This paper introduces a physics-informed conditional variational autoencoder that achieves interpretable, low-dimensional compression of cosmic microwave background power spectra to enable rapid, amortized diagnostics for cosmological model discrimination and anomaly detection beyond the standard CDM framework.
⚛️ general relativity
The velocity coherence scale: a novel probe of cosmic homogeneity and a potential standard ruler
This paper introduces the velocity coherence scale () as a redshift-independent standard ruler and a novel probe for the transition to cosmic homogeneity, demonstrating its theoretical connection to the matter-radiation equality scale and providing a proof-of-concept measurement of approximately 138 Mpc/h using SDSS data while highlighting the need for more precise peculiar velocity surveys to refine future estimates.
⚛️ general relativity
A structural criterion for asymptotic states in Supersymmetry
This paper establishes a structural criterion distinguishing admissible field structures from realized asymptotic particle states by defining particlehood as an isolated spectral atom with non-zero weight, thereby demonstrating that any apparent fermion-scalar asymmetry within a supersymmetric multiplet necessitates supersymmetry breaking or dynamical differences.
⚛️ general relativity
Interior geometry of black holes as a probe of first-order phase transition
This paper proposes that the near-singularity geometry of scalarized AdS black holes, specifically the behavior of the Kasner exponent , serves as a novel and sharp diagnostic tool for identifying first-order phase transitions and supercritical crossovers, revealing how macroscopic thermodynamic changes fundamentally reshape the deepest interior structure of spacetime.
⚛️ high-energy theory
Cosmic birefringence from a joint analysis of ACT and Planck
This paper presents a joint analysis of ACT and Planck polarization data that reveals a statistically significant non-zero cosmic birefringence angle (), suggesting potential new physics beyond the standard CDM model, although unresolved systematics warrant further investigation before definitive cosmological conclusions can be drawn.
⚛️ high-energy theory
Formation of the Kerr black hole: an exact model
This paper presents an exact analytical model describing the final stage of axisymmetric gravitational collapse into a Kerr black hole, characterized by a time-dependent rotation parameter that predicts transient anisotropic curvature signatures and a novel quasi-extremal regime without requiring the rotation to approach the mass limit.
⚛️ high-energy theory
A causal magnetic black hole with finite self-energy
This paper constructs a causal, finite-energy magnetic black hole model within nonlinear electrodynamics that satisfies key physical stability criteria, admits exact solutions with a single horizon, and predicts distinct observational signatures in photon spheres and black hole shadows that differ between ordinary and extraordinary electromagnetic wave branches.
⚛️ high-energy theory
The spectral gap of the ABJM model: A holographic perspective from uplifted higher-dimensional geometries
This paper investigates the spectral gap and fermionic response of the ABJM model by analyzing a charged black brane in four-dimensional gauged supergravity and its uplifts to five and eleven dimensions, demonstrating that the gap arises from unequal chemical potentials and that the near-horizon geometry exhibits decoupling sectors resembling or .
⚛️ high-energy theory
Quantum-cosmological corrections to inflationary spectra from Gaussian wave packets
This paper investigates how quantum entanglement between homogeneous inflaton-gravity degrees of freedom and perturbations in the Wheeler-DeWitt framework generates small, potentially observable deviations in inflationary spectra that are significantly larger than standard quantum-gravitational corrections.