New research reveals that controlling the excitation wavelength significantly alters the behavior of spin defects in hexagonal boron nitride, opening doors for improved quantum sensing performance.
![Within a closed anti-de Sitter (AdS) universe, the expectation value and its square for a patch operator demonstrate inherent properties of the spacetime geometry, revealing how quantum fluctuations manifest within this constrained cosmological model [latex]AdS[/latex].](https://arxiv.org/html/2602.05939v1/x2.png)
New research suggests that the quantum reality experienced by observers within a de Sitter space can emerge from a broader description of a ‘baby universe’ and its statistical properties.
Researchers pushed the boundaries of dark matter detection with a highly sensitive haloscope experiment, refining the search for axions-hypothetical particles that could make up the universe’s missing mass.
![The convergence of [latex]\mathcal{Z}(g\_{\text{YM}},\phi)[/latex] and [latex]\mathcal{Z}\_{\text{ScYM}}(g\_{\text{YM}},\phi)[/latex] is dictated by rotational symmetry-a φ rotation of the integration contour induces a corresponding rotation of the divergent region, expanding until, at [latex]\phi=\pi/4[/latex], divergence dominates the second and fourth quadrants, after which convergence is localized within figure-eight domains through continued rotation beyond [latex]\arg(a)>\pi/4[/latex], with the formal sum of residues converging within the shaded regions and mirrored across the yy-axis for the negative contour.](https://arxiv.org/html/2602.05733v1/x4.png)
New research connects the seemingly complex world of four-dimensional superconformal Yang-Mills theory to a surprisingly simple two-dimensional picture, revealing a deep link between instantons and unstable configurations.
A new method for extracting mesoscopic chemical potentials from experimental data offers insights into the equation of state governing dense nuclear matter.
![The study of a superconducting/ferroelectric/superconducting structure reveals distinct ferron-polariton and ferron excitations, characterized by parameters [latex]\alpha_{1,2,3} = \{-2.012, 3.608, 1.345\} \times 10^{9} \text{ Nm/C}^{2}[/latex] and [latex]\Omega_{p} = 6.39 \text{ THz}[/latex], demonstrating that the [latex]\delta p_{x}[/latex]-ferron-polariton branches ([latex]\omega_{u,l}[/latex], shown in blue) diverge from the [latex]\delta p_{x}[/latex]-ferron dispersion ([latex]\omega_{1}[/latex], shown in red) as effective wavelength approaches infinity, while the [latex]\delta p_{y,z}[/latex]-ferron frequencies ([latex]\omega_{\pm}[/latex], shown in blue-red dashed curves) remain consistent both with superconducting screening and in the limit of infinite effective wavelength.](https://arxiv.org/html/2602.05473v1/dispersion.png)
Researchers have demonstrated the creation of novel light-matter quasiparticles in layered superconductor/ferroelectric materials, paving the way for exploring quantum phenomena at terahertz frequencies.
![Numerical simulations explore the dynamic evolution of chiral condensates in a proposed quantum simulator of the (2+1)-dimensional spin-1 quantum liquid magnet, demonstrating how manipulation of the staggering potential δ - ranging from 79.49 to 79.64 Hz - and the electric field energy [latex]g^2[/latex], achieved through coordinated adjustments to both on-site interactions [latex]U[/latex] and δ, influences the system’s response to quenching from the vacuum state on an infinite cylinder with a width of two matter sites.](https://arxiv.org/html/2602.04948v1/x1.png)
Researchers demonstrate a promising pathway to quantum simulate 2+1D quantum electrodynamics using tunable optical lattices and trapped atoms.
New research demonstrates how transverse magnetic fields can be used to control the scrambling of quantum information in chaotic systems.
![The study demonstrates that conditional mutual information [latex]I(l|l_B,p)[/latex] collapses onto a universal scaling function [latex]f[(p-p_c)l_B^{1/\nu}][/latex] with critical exponent [latex]\nu=1[/latex] and critical point [latex]p_c=1[/latex], indicating a robust phase transition governed by the system’s parameters and reflected in the corresponding renormalization group flow.](https://arxiv.org/html/2602.04961v1/x2.png)
A new framework leverages quantum information inequalities to constrain the behavior of complex materials far from equilibrium.
New research reveals a surprising rule governing the behavior of quantum magnets on triangular lattices, demonstrating that external magnetic fields can actually restore broken symmetry.