Seeing Through the Noise: Adaptive Ultrasound Imaging Corrects for Reverberation
A new technique dynamically adjusts ultrasound focusing to overcome distortions and improve image clarity in challenging media.
Science
Tuning Transport in Quasiperiodic Chains
![The energy spectrum of an isolated commensurate Aubry-Andérson chain undergoes distinct transformations dependent on modulation phase, exhibiting merged zero-energy edge states and a central bulk band at [latex]\phi_{\lambda} = 0[/latex], while a complete band narrowing occurs at [latex]E = 0[/latex] eV for [latex]\phi_{\lambda} = \pi/2[/latex]-shifts coinciding with critical modulation strengths of [latex]\delta_{t} = W_{c1} = \frac{2}{\sqrt{3}}[/latex] and [latex]\delta_{t} = W_{c2} = 2[/latex], which govern the opening and closing of the central bulk gap, and ultimately demonstrate the system's sensitivity to subtle shifts in its foundational parameters.](https://arxiv.org/html/2602.05338v1/eg120pi2.png)
New research reveals how topology and disorder interplay in a carefully designed atomic chain to create robust and tunable charge transport.
Can AI Truly Learn From Experience?
New research reveals a critical gap in the ability of current artificial intelligence systems to solve complex problems that require long-term planning and adapting to novel situations.
The Limits of Quantum Distinction
![Information-dissipation efficiency is maximized within a specific spectral window-approximated by the Planckian regime-as systems concentrating spectral weight in this region achieve near-optimal performance, while those exhibiting significant high-frequency contributions demonstrate parametrically reduced efficiency, a relationship quantified by [latex]\eta(\omega)/\beta[/latex] and illustrated through comparative analysis of Drude-like dissipation spectra.](https://arxiv.org/html/2602.04953v1/x1.png)
New research reveals a fundamental link between how well we can tell quantum states apart and the energy dissipated in the process.
Beyond the Standard Model: Mapping the Unknown with Higher Dimensions
New calculations refine the theoretical tools needed to search for physics beyond our current understanding of the universe.
Mimicking Gravity: A Gauge Theory Approach to Black Hole Physics
New research demonstrates how a sophisticated gauge theory framework, leveraging ‘ersatz gravity’ and double-copy techniques, can reproduce key features of gravitational systems, including black hole thermodynamics.
Superfluid Tunnels: Exploring Quantum Flow in BECs
![The study demonstrates that a variational approximation [latex]\text{VA}[/latex] effectively captures the broad dynamics of unstable vortices-specifically, regimes of macroscopic self-trapping at weaker coupling and Josephson oscillations at stronger coupling-though it fails to predict instability onsets like vortex splitting or the development of crescent-shaped distortions, suggesting the model accurately reflects the <i>qualitative</i> behavior despite limitations in forecasting precise structural failures.](https://arxiv.org/html/2602.05001v1/x45.png)
New research delves into the dynamics of quantum tunneling between superfluids in Bose-Einstein condensates, revealing insights into the behavior of quantum droplets and vortices.
Beyond the Horizon: Exploring Black Brane Dynamics with Extended Gravity
This review delves into the holographic properties of black branes within a non-minimal Einstein-Yang-Mills framework, examining how modifications to gravity impact key transport coefficients.
Beyond Equilibrium: How Hadronic Matter Flows and Diffuses
![The study demonstrates how the drag coefficient of a hadron gas fluctuates with temperature, exhibiting a sensitivity dependent on both the applied charge [latex]q[/latex] and the imposed mass cutoff, thereby illuminating the complex interplay of these parameters in determining the gas’s hydrodynamic behavior.](https://arxiv.org/html/2602.05478v1/x2.png)
New research explores how non-equilibrium effects influence the transport properties of hadronic matter, impacting our understanding of the quark-gluon plasma and heavy-ion collisions.
Turning the Imaginary: Unlocking Confinement in Yang-Mills Theory
A new study reveals how a mathematical trick-imaginary rotation-can induce confinement and chromomagnetic condensation within the well-known framework of SU(2) Yang-Mills theory.