Listening for Dark Energy: A Lunar Echo of the Universe
![The study demonstrates that a lunar laser interferometer can constrain dark energy models, achieving [latex]2\sigma[/latex], [latex]3\sigma[/latex], and [latex]5\sigma[/latex] confidence regions around the fiducial clustering dark energy parameter values of [latex](w, c_{s}^{2}) = (-1, 10^{-2})[/latex] using a cosmology-calibrated mock strain power spectrum, highlighting the precision attainable in mapping the landscape of cosmic acceleration.](https://arxiv.org/html/2601.22084v1/fisher_contour_w_cs2_fid_cs2_1e-2.png)
A novel approach using a laser interferometer on the Moon could reveal fundamental properties of dark energy, offering a new window into its mysterious nature.
Science
Quark Matter Under Magnetar Fields: A New Framework for Superconductivity
A novel approach combining medium separation with magnetic field regularization offers a more physically realistic model for understanding the behavior of dense quark matter in extreme astrophysical environments.
Unlocking the Secrets of Nuclear Decay: A Deep Dive into Beryllium-8
![The observation of a [latex] ^{14}N [/latex] nucleus coherently dissociating into [latex] ^8Be(0+) [/latex] and two alpha particles at 2 GeV per nucleon demonstrates a specific decay pathway governed by nuclear interactions.](https://arxiv.org/html/2601.21425v1/fig37.png)
New research utilizing nuclear emulsions provides crucial insights into the relativistic dissociation of nuclei and the elusive Hoyle state, shedding light on the formation of carbon and heavier elements.
Mirror Images: Uncovering Hidden Connections in Quantum Field Theory
![A localized mutation within a brane tiling-acting along hexagonal faces-reconfigures the periodic quiver geometry on a 2-torus without altering the underlying structure or the mesonic moduli space of the associated [latex]\mathcal{N}=1[/latex] superconformal field theories, effectively realizing a specific series of Seiberg dualities.](https://arxiv.org/html/2601.20936v1/x1.png)
New research reveals that seemingly different quantum field theories can be surprisingly linked, sharing the same underlying structure despite distinct appearances.
Twisted Light: Exploring Nonlinear Optics in Reduced Dimensions
A new theoretical framework reveals how quantum effects on fermions can induce birefringence-the splitting of light-in two-dimensional materials.
Quintessence Under Pressure: Entropy and the Limits of Dark Energy
New research reveals potential instabilities in quintessence models of dark energy, linking them to fundamental constraints on theoretical physics.
Beyond the Dirac Cone: Unveiling Interactions in Exotic Fermions
![The evolution of power [latex]\eta(E)[/latex] within the density of states [latex]\rho(E) \sim E^{\eta(E)}[/latex] demonstrates a transition from linear Dirac behavior at low energies to type-II semi-Dirac characteristics as energy increases, a phenomenon modulated by interaction strengths of [latex]\alpha = 0.05, 0.10, 0.20[/latex] at the Hartree-Fock level and consistent with the interacting spectrum detailed previously.](https://arxiv.org/html/2601.21098v1/x4.png)
New research explores how long-range interactions reshape the behavior of type-II semi-Dirac fermions, impacting their fundamental properties.
Unlocking the Secrets of Nucleon Resonances
New theoretical work explores the complex interactions within protons and neutrons, revealing a deeper understanding of their excited states.
Diamond’s Hidden Defects Revealed with Tunneling Precision
Researchers have pinpointed the electronic signature of sp³ dangling bonds on diamond surfaces, paving the way for improved control and utilization of these defects in quantum technologies.
The Extremal Edge: Black Hole Collapse Defies Cosmic Limits
![With a gluing solution of type (i) and [latex]A_k = 2k = 2g[/latex], the empirical limit of [latex]\mathcal{B}[/latex] is reached at a point where, despite [latex]J = 0[/latex], the effective magnetic moment [latex]m_H[/latex] remains positive at [latex]V = 0[/latex].](https://arxiv.org/html/2601.20955v1/x2.png)
New research demonstrates a violation of the third law of black hole mechanics, revealing that highly rotating black holes can form through gravitational collapse in five dimensions.