394 papers
This paper proposes a quantum metasurface composed of a tunable two-dimensional atom array that can exist in a superposition of transmissive and reflective states, enabling the detection of subtle frequency shifts caused by vacuum particle creation resulting from non-perturbative changes in electromagnetic boundary conditions.
This paper demonstrates that massless scalar fields in a rotating Teo wormhole undergo stationary particle creation and entanglement via geometrically induced, asymmetric vacuum mode mixing, which acts as a non-dynamical analogue of the Asymmetric Dynamical Casimir Effect driven by frame dragging rather than time-dependent boundaries.
This paper demonstrates that in quantum group-deformed spin systems, conventional local measurements on a Bell singlet state introduce deformation-dependent biases, which can only be resolved by adopting a symmetry-covariant, braided notion of locality that restores unbiased statistics while preserving perfect anticorrelation.
This paper investigates the semi-infinite square potential well by deriving rules for the number of bound states, correcting a flawed graphical simplification found in standard textbooks, and providing accurate approximations and exact solutions for the energy eigenvalues and eigenfunctions.
This paper presents a calibration-independent consistency test using Gaussian Processes and the Alcock-Paczynski variable, demonstrating that recent updates to DES SNIa data (DES-Dovekie) resolve previous tensions and confirm consistency across uncalibrated DESI DR2 BAO and multiple SNIa datasets within approximately 1σ.
Using DESI DR2 BAO measurements, this paper constrains a model of interacting dark matter and radiation that induces bulk viscosity to resolve cosmic tensions, finding that the data disfavors such interactions prior to recombination and rules out the model as a solution to the Hubble tension.
This paper revitalizes power-law inflation as a viable cosmological framework by deriving its complete set of general analytical solutions, demonstrating that previous incompatibilities with modern observations arose from considering only a particular solution rather than the full general case.
This paper demonstrates that within a hybrid framework where no quantum correlations are generated, the conservation of additive observables strictly forbids a classical gravitational field from transferring momentum or energy to a quantum system, thereby implying that observed gravitational back-action necessitates the non-classicality of gravity.
This study investigates how pressure anisotropy, modeled via the Bowers-Liang framework and a quasi-local prescription, significantly enhances the maximum mass and compactness of neutron stars while revealing that internal curvature invariants tied to matter distribution are highly sensitive to anisotropy, unlike the more robust Weyl curvature.
This paper demonstrates that holographic dark energy with a Granda-Oliveros cutoff inevitably leads to a big rip singularity regardless of spatial curvature or Kaniadakis entropy modifications, and argues that only irreversible thermodynamic mechanisms like non-equilibrium particle creation can soften this divergence into an asymptotic little rip.
This paper investigates multipartite entanglement in pure BTZ black hole states within AdS/CFT using multi-entropy and Steiner trees, revealing a high-temperature volume-law scaling for genuine tripartite entanglement, a phase transition when a subsystem exceeds half the total size, and nontrivial radial cutoff dependencies that contrast with vacuum AdS behavior.
This paper resolves the apparent contradiction between theory-independent no-go theorems and recent findings by explaining how classical gravity coupled to quantum matter can still induce entanglement, thereby underscoring the critical urgency of experimental investigations into low-energy quantum gravity effects.
This review outlines the fundamental theory and numerical methods for modeling the coupled magnetic and thermal evolution of isolated neutron stars, providing benchmark tests and discussing recent advancements from axisymmetric to fully three-dimensional simulations to explain their diverse observational properties.
This paper investigates how dark dipole radiation from eccentric supermassive black hole binaries can accelerate their inspiral and alter the low-frequency stochastic gravitational-wave background, finding that while it cannot fully resolve the final-parsec problem, it remains detectable through Bayesian analysis of current pulsar timing array data.
This paper utilizes superradiant instabilities in rotating black holes triggered by ultra-light spin-2 fields from warped extra dimensions to derive stringent constraints on the size of the extra dimension and AdS curvature in the Randall-Sundrum model, with significant implications for constructing metastable de Sitter vacua in string theory.
This paper investigates how dark matter environments, including minispikes and NFW haloes, modify the nonlinear gravitational memory of intermediate-mass-ratio binaries through effects like dynamical friction and accretion, ultimately demonstrating that these astrophysical surroundings leave a detectable hereditary imprint on gravitational wave signals that could be observed by future space-based detectors.
This paper investigates cosmological models incorporating reversible and irreversible thermodynamic processes, specifically gravitationally induced matter creation/annihilation and energy exchange with the cosmic horizon, finding that while these thermodynamically motivated interactions do not resolve the Hubble tension when local SH0ES measurements are included, they offer a dynamic dark energy alternative consistent with other cosmological datasets.
This paper introduces SEOBNRv5PHM_w/asym, an upgraded gravitational waveform model that incorporates equatorial-asymmetric effects to significantly improve agreement with numerical relativity simulations, enhance recoil velocity predictions, and refine parameter estimation for spin-precessing binary systems.
This paper proposes using quantum-state discrimination strategies on massive quantum clocks, such as thorium nuclei, within the Parametrized Post-Newtonian formalism to theoretically demonstrate that different metric theories of gravity can be distinguished with high certainty, potentially even with a single detection event or a small ensemble of clocks.
This paper introduces "cosmological dressing rules" that transform flat space Feynman diagrams into in-in correlators for conformally coupled and massless scalar theories in four-dimensional de Sitter space, thereby revealing a hidden simplicity linked to flat space scattering amplitudes while correctly reproducing infrared divergences predicted by the Schwinger-Keldysh formalism.