Gravitation & Nuclear · Physics & Astronomy
General Relativity & Quantum Cosmology
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130 papers, from 10 September 2026 to 5 November 2026: 130 arXiv preprints.
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Longitudinal electric corner modes in continuum quantum gauge theory with matter
Subregions in gauge theories give rise to edge modes and corner charges supported on their boundaries.Quantum Popcorn: the shape of a phase transition bubble
A quantum tunneling event in field theory is usually depicted as the materialization of a spherical bubble of true vacuum.No generalised contextuality from the vacuum
We show that, under certain conditions, generalised contextuality, in the sense introduced by Spekkens, cannot be created from the vacuum of a quantum field.Zero mode, Zero influence: Spatial-derivative coupling in particle detectors
It is common in particle detector models in cavity QED to often omit zero modes or assume their state, compromising causality or introducing ambiguity in their predictions.RAKI: High-Order Alternative Finite Differences for General Relativistic Magnetohydrodynamics
Binary neutron star (BNS) and black hole--neutron star mergers are among the most important multimessenger sources.Trajectory sharpening under quantum reference frame transformations
Quantum reference frame (QRF) transformations relate the description of a physical system to different quantum observers, but their connection to concrete experimental phenomena remains largely…Relating approaches to interacting quantum clocks and systems
The problem of describing the dynamics of quantum systems relative to quantum clocks with which they interact is relevant to the physics of quantum reference frames and quantum gravity alike.Fermionic Unruh effect revisited: Entanglement and correlation dynamics under symmetric transformations
A uniformly accelerated observer perceives the Minkowski vacuum as a thermal bath, so acceleration acts as a noise channel on correlations shared with an inertial partner.Gravitational Interactions in Nuclear Clocks
Atomic clocks achieve extraordinary precision through quantum control over large ensembles of atoms, with precision increasing and atom number advancing steadily.The Disordered Universe 2025: Open Effective Field Theories
Effective field theories (EFTs) offer a powerful method to unify diverse models under a small set of control parameters, allowing systematic expansions around well-established theories.Probing the inner disk edge of rotating neutron stars with dipole excitations in finite nuclei
The nuclear equation of state shapes both the structure of rapidly rotating neutron stars and the orbital motion in their surrounding spacetime.Recovering classical gauge geometry from quantum master constraints
Exact normalizable solutions of quantum constraints form a symplectic submanifold of the space of rays, whereas classical first-class constraints define a surface on which the symplectic form is…Weighing dark matter particles with gravitational waves
It is commonly assumed that the mass of dark matter particles cannot be determined from their gravitational effects when dark matter behaves as collisionless matter.Seeing Unseen Gravitational Wave Inspirals at the Galactic Center
The Galactic Center is expected to host a population of extremely large mass-ratio inspirals (X-MRIs) migrating toward the supermassive black hole.Complete characterization of internal-external entanglement trade-offs in two-mode Gaussian states
We characterize the exact trade-off between internal and external entanglement in asymmetric two-mode Gaussian states at fixed local symplectic eigenvalues.Bargmann-invariant witness of the graviton commutator
We identify the phase of a Bargmann invariant of two matter-wave interferometers as a quantum gravity signature that cannot be reproduced by any branchwise-definite classical gravitational field.Tidal contributions to neutron star orbital precession around Sgr $A^*$
We investigate tidal contributions to the orbital precession of neutron stars around the supermassive black hole Sgr A*, using stellar configurations described by the Tolman - Oppenheimer - Volkoff…Catastrophe Structure and Stability of Axion Stars
Axion stars are self-gravitating Bose--Einstein condensates of QCD axions or axion-like particles.Can Spontaneous Time-Translation Symmetry Breaking Be Quantized Without Explicit Branches?
Can classically branched dynamics associated with spontaneous time-translation-symmetry breaking be quantized without explicitly retaining the branches of the Hamiltonian?The Hosts and Mass Distribution Function of the Most Massive Black Holes: Implications for the nHz Gravitational Wave Background
We use the core-radius, $r_γ,$ of a galaxy's central core along with a volume-limited sample of brightest cluster galaxies (BCG) to determine the $z=0$ mass distribution function of the most massive…