Beyond Black Holes: Seeing the Universe’s Hidden Objects
![Numerical solutions demonstrate that for [latex]m=2[/latex] and [latex]m=4[/latex], the behavior of [latex]h[/latex], [latex]\bar{\phi} - \bar{\phi}_0[/latex], and [latex]{\cal M}/M_0[/latex] as functions of [latex]r/r_0[/latex] exhibits qualitative similarities, particularly in the minima of [latex]h[/latex], despite slight variations in asymptotic values of [latex]\bar{\phi}[/latex], and occurs with parameter choices where α is just below the critical value necessary for photon ring formation.](https://arxiv.org/html/2602.23657v1/2602.23657v1/x4.png)
New research explores how exotic compact objects, supported by dark matter interactions, could reveal themselves through unique gravitational lensing effects.
Science
Beyond Big O: Pinpointing Algorithm Bottlenecks
A new analysis framework reveals how input parameters directly influence computational cost, moving beyond simple complexity classifications.
Hunting Sub-GeV Dark Matter with Superfluid Helium
A new analysis details the projected reach of the QUEST-DMC experiment in the search for light dark matter particles interacting with terrestrial detectors.
Holographic Symmetry: Unveiling Hidden Dynamics at the Boundary
New research explores how continuous symmetries manifest in holographic systems, revealing a deep connection between boundary operators and the dynamics of branes in anti-de Sitter space.
Confining the Quantum Realm: A New Look at Non-Abelian Gauge Theory
![The study quantifies the Lüscher term’s contribution to potential energy-a finite-size effect in lattice gauge theory-across varying lattice widths [latex]N_x[/latex] of 55, 44, and 33, demonstrating its dependence on the string tension σ and a constant [latex]c[/latex], calculated as the difference between the potential [latex]V(N_y)[/latex] and [latex]σ N_y[/latex].](https://arxiv.org/html/2602.23213v1/2602.23213v1/x64.png)
Researchers have successfully simulated a complex quantum system, providing new insights into the behavior of non-Abelian gauge theories in two dimensions.
Molecular Choreography: Sculpting Quantum Landscapes with Polar Molecules
![Through manipulation of microwave fields, polar molecules exhibit a deformed Fermi surface-an ellipsoidal momentum distribution elongated along attractive interaction axes and counteracted by kinetic pressure-with the degree of deformation, quantified by [latex]\Delta_{xy}=\sigma_{x}/\sigma_{y}-1[/latex], predictably modulated by ellipticity and Rabi frequency, and visualized through analysis of absorption images revealing quadrupolar deformation residuals when compared to circular fits and rotated copies of the molecular cloud.](https://arxiv.org/html/2602.22447v1/2602.22447v1/x1.png)
Researchers have directly observed how interactions between ultracold polar molecules can be used to reshape the fundamental quantum properties of a gas, opening new avenues for exploring exotic states of matter.
The Limits of Knowing: Inference as Thermodynamics
[/latex], suggesting an inherent architectural constraint on neural signaling regardless of species or recording method.](https://arxiv.org/html/2602.22605v1/2602.22605v1/x1.png)
New research reveals a surprising connection between the fundamental laws of physics and the process of drawing conclusions from data.
Time-Bending Absorbers: A New Approach to Wave Control
Researchers have demonstrated a passively switching temporal metamaterial capable of efficiently absorbing electromagnetic waves, offering a simplified alternative to conventional impedance matching techniques.
Unveiling Gravity’s Hidden Symmetries
New research confirms predictions of E11 exceptional field theory by establishing a framework for understanding the deeper relationships within eleven-dimensional supergravity.
Kondo Effect Redraws the Electronic Landscape of a Van der Waals Material
![The progression from localized [latex]4f[/latex] orbitals in TmTe3, through extended [latex]4f[/latex] behavior in CeTe3, to fully extended [latex]5f[/latex] orbitals in β-UTe3 demonstrates a systematic evolution towards the Kondo regime, confirmed by structural analysis revealing van der Waals gaps and tight-binding calculations showing the suppression of nesting at the Fermi level-a characteristic substantiated by scanning tunneling microscopy identifying tellurium and uranium sub-lattices and associated periodicities, even in the presence of vacancies.](https://arxiv.org/html/2602.22451v1/2602.22451v1/x1.png)
New research reveals how the Kondo effect fundamentally alters the electronic structure of β-UTe3, a promising heavy-fermion compound.