⚛️ Category
gr-qc
3151 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.
Canonical description of Pontryagin and Euler classes with a Barbero-Immirzi parameter
This paper provides a detailed canonical analysis of Pontryagin and Euler topological invariants by introducing Holst-like variables and a Barbero-Immirzi parameter, ultimately determining the theory's constraints, degrees of freedom, and its connection to self-dual representations.
Cosmic Collider Gravitational Waves sourced by Right-handed Neutrino production from Bubbles: Testing Seesaw, Leptogenesis and Dark Matter
This paper explores a minimal type-I seesaw framework where a first-order phase transition produces right-handed neutrinos through bubble collisions, creating a "cosmic collider" that generates unique gravitational-wave signals capable of testing models of leptogenesis, dark matter, and asymmetric co-genesis across various energy scales.
Subsolar mass black holes from stellar collapse induced by primordial black holes
The paper proposes that subsolar mass black holes could originate from an "indirect PBH scenario," where a small primordial black hole is captured by a dwarf star and subsequently consumes it, rather than the black hole being a primordial object itself.
Dynamical response of twin stars to perturbations
By performing general-relativistic simulations, the authors demonstrate that the "favoured" branch of twin stars in a mass-radius sequence is determined by which configuration can withstand larger perturbations before migrating to the other branch, a property that can be predicted using binding energies rather than full simulations.
Effects of the symmetry energy slope on magnetized neutron stars
The no-hair theorems at work in the tidal disruption event AT2020afhd
Perturbation Dynamics and Structure Formation in Extended Proca-Nuevo Gravity
This paper analyzes cosmological perturbations and structure formation within the Extended Proca-Nuevo (EPN) framework, demonstrating how a massive spin-1 vector field modifies the universe's expansion history and gravitational potentials while maintaining the standard form of the matter growth equation.
Flux Mixing and CP Violation in QCD
The paper proposes that kinetic mixing between QCD and a hidden-sector three-form gauge field generates an effective shift in the angle, thereby inducing CP-violating effects and potentially impacting standard solutions to the strong CP problem.
A New Spin on Dissipative Tides: First-Post-Newtonian Effects in Compact Binary Inspirals
This paper derives the next-to-leading order post-Newtonian corrections for tidal dissipation in spinning compact binaries, demonstrating that spin-induced dissipation affects the gravitational-wave phase at the 2.5PN order with a unique logarithmic frequency dependence.