This review explores recent advances in understanding the phase structure of quantum chromodynamics at high baryon densities, revealing insights into the behavior of matter within neutron stars and beyond.
New research establishes a surprising connection between restricted excitation movement and a duality linking foliated and exotic quantum field theories.
New research proposes a framework called ‘subtime’ to explore how information exchange within quantum systems could redefine our understanding of causality and the emergence of the classical arrow of time.
New research explores how to determine if an autonomous agent’s drive to continue functioning is a fundamental goal or simply a means to an end.
![The study of Hayward-like quantum theories of gravity reveals that spacetime curvature, as quantified by the Kretschmann scalar [latex]\alpha^{2}R\_{abcd}R^{abcd}[/latex], reaches a maximum in vacuum solutions and becomes increasingly pronounced with increasing parameters <i>D</i> and <i>N</i>, suggesting a fundamental limit to the theoretical construction of spacetime itself as defined by these parameters.](https://arxiv.org/html/2603.10110v1/x4.png)
New research demonstrates that sufficiently extreme matter distributions can surprisingly prevent the formation of spacetime singularities within quasi-topological gravity theories.
![The emitted scalar energy flux from binary systems at a fixed orbital radius of [latex]p/M = 8[/latex] varies predictably with eccentricity and inclination, demonstrating that the magnitude of this flux-normalized across all examined spins-is strongly influenced by the system’s spin parameter [latex]a/M[/latex] for orbital configurations where [latex]\ell = m = 1[/latex].](https://arxiv.org/html/2603.10116v1/plots/Fig13.png)
Researchers have developed a powerful numerical tool to accurately model the gravitational waves emitted by asymmetric binary systems, paving the way for more precise tests of Einstein’s theory and the search for new fundamental fields.
Researchers have demonstrated a pathway to control the transition between distinct quantum states in InAs/GaSb bilayers, opening new avenues for exploring exotic electronic phenomena.
New research reveals a path to describing quantum gravity within a non-Lorentzian framework by examining the decoupling limit of D-branes and string solitons.
[/latex]-and this relationship extends to anti-de Sitter space, which shares conformal equivalence with portions of these geometries.](https://arxiv.org/html/2603.10117v1/x2.png)
New research explores how the iterative refinement of theoretical models, driven by entanglement principles, impacts our understanding of quantum field behavior in Anti-de Sitter space.
![The measured limit on the interaction between axions and photons-at [latex]m_a = 34\,\mu\text{eV}[/latex]-establishes a new benchmark, positioning this research alongside existing efforts to detect these weakly interacting particles.](https://arxiv.org/html/2603.10943v1/x8.png)
The SUPAX prototype experiment has begun the search for axions, a leading dark matter candidate, using a novel haloscope design.