Twisting the Quantum State: A New Path to Precision Sensing
![The transmission proxy, calculated for an effective non-Hermitian optical dimer incorporating atomic backaction, exhibits a sensitivity to probe detuning-specifically [latex]\delta/\gamma_{0}[/latex]-and is demonstrably shaped by the parameter [latex]\tilde{G}[/latex], while remaining consistent across fixed values of [latex]\bar{\Delta}=-{27}\gamma_{0}[/latex], [latex]J=\gamma_{0}[/latex], [latex]\Gamma=\gamma_{0}[/latex], [latex]\gamma_{m}=1.7\times 10^{-5}\gamma_{0}[/latex], [latex]\omega_{c}=40.04\gamma_{0}[/latex], and [latex]\omega_{d}=19.83\gamma_{0}[/latex].](https://arxiv.org/html/2601.04749v1/x3.png)
Researchers propose a novel method for highly sensitive rotation detection by leveraging the unique properties of non-Hermitian optical systems and superfluid dynamics.
Science
Probing Top Quark Interactions at the Future Circular Collider
![Following event selection, the distribution of reconstructed [latex] t\overline{t}t\overline{t} [/latex] reveals the interplay between statistical and systematic uncertainties, which contribute uniquely to the overall precision of the measurement.](https://arxiv.org/html/2601.04763v1/x1.png)
New analysis techniques promise precision measurements of rare top quark processes at the FCC-hh, offering a pathway to discover physics beyond the Standard Model.
Hunting Hidden Particles at the Future Electron-Ion Collider
![The study establishes projected constraints on the coupling between an axion-like particle (ALP) and electrons, expressed as [latex]g_{aee}[/latex], as a function of ALP mass, [latex]m_a[/latex], utilizing the [latex]e^{-}p \to e^{-}e^{+}e^{-}j[/latex] channel and complementing existing limits from perturbative calculations and analyses by BaBar and ATLAS, which also considers the loop-induced [latex]g_{a\gamma\gamma}[/latex] coupling.](https://arxiv.org/html/2601.04962v1/x31.png)
A new study details how a future collider could reveal evidence of axion-like particles and Z’ bosons, signaling physics beyond our current understanding.
Shadow Signals: How Dark Matter Could Warp Neutrino Physics
![The study demonstrates that precision in determining CP violation for the DUNE and T2HK experiments is sensitive to the presence of off-diagonal dark Non-Standard Interactions (NSIs)-specifically, [latex]d_{e\mu}[/latex], [latex]d_{e\tau}[/latex], and [latex]d_{\mu\tau}[/latex]-with the sensitivity analysis conducted under the assumption of a normal neutrino mass ordering and a [latex]\delta_{CP} = -{90}^{\circ}[/latex], while acknowledging inherent uncertainty reflected in the true value of [latex]\phi_{\alpha\beta}[/latex] ranging from -180 to 180 degrees.](https://arxiv.org/html/2601.04802v1/x35.png)
New research explores the subtle influence of interactions between neutrinos and dark matter on measurements of CP violation, a key to understanding matter-antimatter asymmetry.
Missing States, Hidden Instabilities: A New View of Non-Hermitian Physics
![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.
Warped Spacetime, Accelerated Particles: Beyond Einstein’s Relativity
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.
Echoes on Curves: How Magnetic Fields Shape Quantum Behavior
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.
Beyond the Horizon: Simulating the Universe with Bose-Einstein Condensates
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.
Echoes in the Void: Unmasking Hidden Dynamics in Many-Body Localization
![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.
Mirror, Mirror: Reflections at the Edge of Matter
![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.