Dark Matter’s Grip on Spinning Black Holes
![The study demonstrates how a surrounding dark matter halo, modeled with a Hernquist density profile and anisotropic distribution, subtly alters the expected inertial frame dragging effect - specifically, the angular velocity [latex]\omega(r)[/latex] - deviating from the vacuum prediction and manifesting as a measurable shift in the spacetime geometry around a slowly rotating massive object.](https://arxiv.org/html/2602.10579v1/x2.png)
New research explores how surrounding dark matter halos warp the spacetime around slowly rotating black holes, altering orbital dynamics and influencing gravitational wave signatures.
Science
The Top Quark’s Hidden Connections
New research provides the most detailed look yet at how top quarks interact with the fundamental forces, revealing potential pathways to physics beyond the Standard Model.
Beyond the Big Bang: Quantum Gravity and the Fate of the Early Universe
New research explores how modified gravity theories and quantum mechanics might resolve the singularity at the universe’s origin and paint a picture of a non-singular beginning.
Beyond the Crunch: Can Quantum Gravity Prevent Cosmic Collapse?
![The study demonstrates how dust density and mass distributions within an outer boundary-configured to achieve a minimum radius of [latex]L_0 = 0.2[/latex] for a mass of [latex]M = 1[/latex]-reveal the inherent limitations of any model attempting to define a boundary, much like peering into the abyss where even the most carefully constructed theories risk vanishing beyond reach.](https://arxiv.org/html/2602.10804v1/x2.png)
New research explores how modified models of gravity might allow collapsing dust clouds to ‘bounce’ instead of forming a singularity.
Spin and Light in 2D Magnets
A new frontier in materials science combines magnetism and light to unlock novel optoelectronic and quantum phenomena.
Dark Matter’s Hidden Signals: Refining the Search with Atomic Physics
![The study demonstrates that deviations in the recombination coefficient [latex]\alpha_{21}[/latex] between first-principles calculations and scaled Standard Model results remain below 3% for [latex]\alpha_D \sim eq 0.3[/latex] when the matter-radiation ratio is [latex]\mathcal{R}_m = 0.1[/latex], even when exploring scenarios representing dark positronium-created by setting dark electron and proton masses equal to the Standard Model electron mass-across temperatures of [latex]T_\gamma = E_n[/latex], [latex]T_\gamma = 0.1E_n[/latex], and [latex]T_\gamma = 0.01E_n[/latex], where [latex]E_n = B_{H_D}/n^2[/latex] with [latex]n=2[/latex].](https://arxiv.org/html/2602.10197v1/x1.png)
New calculations of atomic processes within dark matter models are enabling astronomers to more precisely constrain the properties of this elusive substance.
Creating Darkness: From the Big Bang to the Lab
New research explores how the universe may have generated dark matter during its earliest moments, and seeks to replicate the process in controlled laboratory settings.
Chiral Light, Targeted Capture: Silicon Nanodisks Isolate Molecules by Handedness
Researchers have demonstrated a new method for selectively trapping and separating chiral molecules using the unique optical properties of silicon nanodisks and structured light.
Twisting to See Chirality: A New Torque-Based Sensor
Researchers have developed a novel method to directly detect the chirality of crystalline materials by measuring minute mechanical torques induced by moving energy carriers.
The Quantum Enigma: What Does the Wave Function Really Tell Us?
A new historical review traces the century-long debate over whether the wave function is a mathematical tool or a description of physical reality.