![The study establishes a relationship between pressure and density in symmetric nuclear matter, constrained by heavy-ion collision data-specifically [latex]Au+Au[/latex]-and informed by chiral nuclear force calculations at [latex]N^{2}LO[/latex] and [latex]N^{3}LO[/latex] orders, alongside constraints derived from kaon production.](https://arxiv.org/html/2603.01933v1/2603.01933v1/figure/Prho.png)
New research demonstrates that standard nuclear physics, using a robust theoretical framework and Bayesian analysis, can fully account for both terrestrial nuclear experiments and observations of neutron stars.
![The scaling test of effective field theory frequency shifts for [latex]\mathcal{O}_{9}[/latex] and [latex]\mathcal{O}_{10}[/latex] at [latex]\ell=2[/latex] demonstrates a predominantly linear dependence on the coupling ζ, as evidenced by the near-flat behavior of [latex]\Re\!\left(\delta_{\rm Leaver}/\zeta\right)[/latex] and [latex]\Im\!\left(\delta_{\rm Leaver}/\zeta\right)[/latex], though deviations at larger ζ values suggest the emergence of higher-order contributions that complicate the system’s graceful aging.](https://arxiv.org/html/2603.01456v1/2603.01456v1/x4.png)
A new numerical framework rigorously tests the accuracy of theoretical corrections to gravitational waveforms emitted by black hole mergers.
New research introduces a powerful moment method for analyzing the injective norm of random tensors, unlocking improved bounds for various models.
A new study details the potential of tabletop photon colliders to probe beyond-the-Standard-Model particles and interactions.
![Existing and proposed fixed-target experiments-including HADES, BM@N, AGS, STAR, NA49, NA61/SHINE, NA60, CBM, J-PARC, and SMOG-collectively map the [latex]\sqrt{s_{NN}}[/latex] collision energy landscape, with the projected Electron-Ion Collider measurements extending this reach into previously unexplored regimes.](https://arxiv.org/html/2603.00265v1/2603.00265v1/figures/energy_AA.png)
A new study proposes a complementary fixed-target program at the future Electron-Ion Collider to broaden our understanding of nuclear matter and its fundamental properties.
Researchers have developed a refined method for determining the rate of sphaleron transitions in quantum chromodynamics, offering improved precision for cosmological and particle physics studies.
A new framework aims to push the boundaries of artificial intelligence in tackling complex research questions through extensive information gathering and synthesis.
![The dynamics of a spin-boson system-characterized by a spin interacting with a harmonic bath, and defined by parameters [latex]\omega_s = 2[/latex], [latex]\Omega = 1[/latex], [latex]\beta = 2[/latex], [latex]\lambda = 0.2[/latex], and [latex]\omega_C = 5[/latex]-reveal the time evolution of both population and coherence, calculated via a [9/16] Padé approximant to model the system’s memory kernel.](https://arxiv.org/html/2603.01458v1/2603.01458v1/x1.png)
Researchers have developed an extension to memory kernel coupling theory that dramatically improves the simulation of complex, interacting quantum systems over time.
New research demonstrates a method for training artificial intelligence to explore environments effectively without external rewards by focusing on the unpredictability of future states.
![Quantum systems reveal that collective spin behavior is profoundly shaped by particle statistics, transitioning from a fully symmetric state at full inversion to differentiated spin shells for bosons and fermions at zero temperature, and ultimately converging towards indistinguishability at sufficiently high temperatures where exchange symmetry loses relevance-a phenomenon described by the relationship [latex]S=|\mathcal{N}^{(e)}-\mathcal{N}^{(g)}|/2[/latex] for fermionic spin shells.](https://arxiv.org/html/2603.00778v1/2603.00778v1/x3.png)
New research explores how the fundamental properties of matter at extremely low temperatures influence the way light is emitted and amplified.