816 papers
This paper investigates cosmology in gravity by demonstrating that a thick brane's embedding in a five-dimensional bulk naturally generates an effective cosmological constant and accelerated expansion without a fundamental brane constant, offering a geometric explanation for cosmic acceleration and the smallness of the observed cosmological constant.
This paper derives slowly rotating charged BTZ black hole solutions in 2+1 dimensional Palatini Chern-Simons gravity by employing a metric-affine formulation and a perturbative approach around a non-rotating background, demonstrating that specific parameter constraints are required to ensure stable perturbations that yield a rotating solution with constant angular momentum and magnetic field at the horizon.
This paper establishes that finite non-invertible symmetries in 3+1d without topological line operators necessarily act invertibly on local operators, leading to a decomposition of general non-invertible symmetries into invertible actions and gauging interfaces, and deriving necessary conditions for such symmetries to be anomaly-free.
Using a novel lag-linear model derived from energy budget mechanisms, this study demonstrates that ENSO strength will initially increase due to enhanced ocean stratification before declining as the Walker circulation slows, revealing that faster emissions lead to stronger peak variability even with identical total emissions.
This paper presents a novel, low-power, software-based calibration method for gamma-ray detectors that utilizes full-spectrum analysis and Monte-Carlo modeling to maintain stable energy calibration in uncontrolled environments, effectively eliminating the need for active temperature control while decoupling instrumental drift from environmental background fluctuations.
This study reveals that the Integration Host Factor (IHF) switches from a DNA-bending function at physiological pH to a DNA-bridging mechanism under acidic biofilm-like conditions (pH < 5) due to protonation-induced exposure of positively charged residues, thereby explaining its structural role in biofilm stability.
This paper demonstrates how a classical physicist, by applying dimensional analysis to a hydrogen atom alongside empirical blackbody radiation laws, could have independently derived the Planck constant and reconstructed the energy and size scales of the Bohr atom prior to its historical proposal.
This study utilizes a hierarchy of global climate models to demonstrate that while extratropical near-surface extreme winds robustly intensify with surface warming, regional projections remain highly uncertain due to inter-model differences in representing the physical dynamics and seasonality of extreme-producing weather systems.
This paper develops a hybrid Lagrangian-Hamiltonian framework that unifies the Noether correspondence between symmetries and conserved integrals, offering a modern formulation of Noether's theorem independent of explicit Lagrangians while clarifying symmetry types and enabling the determination of complete symmetry groups for locally Liouville integrable systems.
This study utilizes validated Large-eddy simulations to investigate how shock waves interact with abrupt and smooth constrictions in conduits, revealing distinct dependencies on blockage ratio and constriction length that lead to the development of semi-empirical models for predicting reflected and transmitted shock strengths.
This paper proposes a nonequilibrium generalization of the GENERIC formalism for relaxation to steady states, characterizing macroscopic evolution as a zero-cost flow derived from an extended Onsager-Machlup action where the time-symmetric frenesy component, identified via local detailed balance and canonical decomposition, fundamentally shapes the dynamics.
This paper demonstrates that accurately predicting the anomalous isotope effect and critical temperatures in palladium hydrides requires a non-perturbative framework that consistently treats anharmonic effects in both phonon spectra and electron-phonon interaction vertices, overcoming the limitations of previous methods that either neglected non-linear coupling or relied on flawed perturbative expansions.
This paper investigates the physical properties of accelerating Bertotti-Robinson black holes in a uniform magnetic field by analyzing their Hawking temperature, geodesic motion, orbital stability, photon sphere characteristics, and energy emission rates to determine how the acceleration and magnetic field parameters influence these phenomena.
This study reveals that in UTe, the ultrahigh-field superconducting region coincides with the line of metamagnetic endpoints only within a narrow angular range near the plane, while the two phase boundaries diverge as the magnetic field tilts toward the axis.
This paper proposes that the infrared sector of asymptotically flat quantum gravity can be formulated as a geometric theory where integrating out fast bulk fluctuations induces a Berry connection on the space of asymptotic charges, thereby organizing gravitational states into superselection sectors defined by holonomy and establishing quantization as a global consistency condition for adiabatic transport.
This study demonstrates that in the van der Waals material UTe, strong Kondo hybridization between U 5 and Te states reconstructs the electronic structure and suppresses the charge density wave instability that would otherwise arise from Fermi-surface nesting.
This paper introduces a spectral approach to the 3D Edwards-Anderson spin glass, demonstrating that the eigenvalue statistics of overlap matrices exhibit a q-Gaussian crossover from a Wigner semicircle to a Gaussian distribution at the critical temperature, thereby offering a robust and computationally efficient indicator of spin-glass criticality.
This paper utilizes the microscopic Gogny Hartree-Fock-Bogoliubov approximation to demonstrate that while a cluster radioactivity fission valley exists across a wide range of isotopic and isotonic chains, it diminishes and disappears in neutron-deficient nuclei with an ratio below 1.41, thereby defining the limits of this decay mode's existence.
This paper presents an analytical pulse-response analysis of a reaction-advection-diffusion equation modeling a narrow reactor tube, demonstrating that the characteristics of a first-order irreversible reaction can be readily determined by comparing the exit flow curve with and without chemical activity.
This paper introduces a data-driven, neural-network-based approach that reduces the complexity of diverse microbiomes into a few interpretable functional groups, thereby linking specific microbial or genetic traits to community-wide functions and responses to perturbations across human and environmental health contexts.