![The non-Hermitian Su-Schrieffer-Heeger (SSH) model exhibits a complex relationship between system parameters and the presence of zero-energy modes, where, despite the absence of topological edge states in the eigenvalue spectrum-particularly for [latex]1.2 \lesssim |t_1| \leq 5/3[/latex] or [latex]|t_1| \leq 1/3[/latex]-the singular value spectrum consistently identifies these modes, demonstrating its superior capability in detecting zero-energy states compared to solely relying on eigenvalue analysis, even when the system lacks conventional topological protection.](https://arxiv.org/html/2601.05234v1/Figures/NHSSHchain.png)
A new study reveals that discrepancies in non-Hermitian systems stem from focusing on eigenvalues rather than the full eigenstate spectrum, uncovering previously overlooked instabilities.
This review explores how deviations from Lorentz symmetry impact the fundamental process of Fermi acceleration, potentially altering our understanding of high-energy cosmic ray origins.
New research delves into the semiclassical limits of quantum systems on hyperbolic surfaces under magnetic influence, revealing intricate patterns in the distribution of energy levels.
Researchers are leveraging the unique properties of Bose-Einstein condensates to model the earliest moments of the universe and explore the challenges of simulating conditions beyond the Planck scale.
![Despite an overall appearance of saturation within the many-body localized regime, detailed analysis of site-resolved spin autocorrelators-calculated via unitary time evolution governed by [latex]\text{Eq. (5)}[/latex] and averaged over time as defined in [latex]\text{Eq. (7)}[/latex]-reveals localized resonant dynamics at individual sites, highlighted against the backdrop of a seemingly uniform imbalance [latex]{\cal{I}}^{m}(t)[/latex] as described by [latex]\text{Eq. (3)}[/latex], demonstrating that spatial averaging can obscure critical information about the system’s underlying behavior even in strongly disordered systems with [latex]\Delta = 1[/latex] and [latex]h = 10[/latex].](https://arxiv.org/html/2601.05177v1/x1.png)
New research reveals that localized resonances profoundly affect the long-term behavior of disordered quantum systems, challenging conventional interpretations of imbalance measurements.
![The reflection coefficients-[latex]R[/latex] and [latex]J^{\mathrm{ref,sym}}[/latex], [latex]J^{\mathrm{ref,asym}}[/latex]-exhibit a pronounced dependence on incident angle, varying systematically with on-site potentials and energies, though the radial axis is cropped to enhance clarity of these relationships.](https://arxiv.org/html/2601.05140v1/x10.png)
A new study reveals an unexpected analogy between electron reflection at the interface of a Mott insulator and the Klein paradox, opening doors for solid-state investigations of fundamental quantum phenomena.
New research explores the quantum effects generated by fields existing within the intense gravitational environment of boson stars, potentially revealing corrections to classical spacetime.
![The study demonstrates that future iterations of levitated FMTO experiments, leveraging optimized configurations, enhanced vibration isolation, and superconducting shielding, are projected to significantly improve sensitivity to axion-electron coupling-potentially matching or exceeding the constraints currently established by both laboratory-based comagnetometers and astrophysical observations of red-giant cooling and solar axions, as indicated by the projected curves and current limits shown for [latex]g_{aee}[/latex] versus [latex]m_a[/latex].](https://arxiv.org/html/2601.04576v1/prospect.png)
Researchers are employing a highly sensitive torsional oscillator to search for evidence of ultralight axions, a leading candidate for dark matter.
![The measured strength of spin correlations, quantified as [latex] f_{\mathrm{SM}} [/latex], deviates from Standard Model predictions, with statistical uncertainties indicated by inner bars, total experimental uncertainties by middle bars, and comprehensive uncertainties detailed by outer bars-a nuanced assessment of observed phenomena beyond established theoretical frameworks.](https://arxiv.org/html/2601.04649v1/x2.png)
New measurements from the ATLAS and CMS experiments at the Large Hadron Collider provide compelling evidence of quantum entanglement and spin correlation in top quark pairs.
Researchers have demonstrated a new method to mimic the electromagnetic properties of materials by dynamically controlling light, effectively creating a ‘temporal illusion’.