![The study demonstrates how approximations to the effective potential-ranging from full calculations using [latex]CosmoTransitions[/latex] to those neglecting Daisy contributions-systematically shift the computed bounce action [latex]S\_{3}(T)[/latex], with results benchmarked against a fit from prior work to polynomial potentials, thereby revealing the sensitivity of cosmological phase transitions to the details of potential calculations.](https://arxiv.org/html/2602.02829v1/x6.png)
A new semi-analytical framework streamlines the calculation of gravitational wave signals originating from cosmological phase transitions, offering a computationally efficient path to understanding the universe’s earliest moments.
![The study demonstrates that correlation functions in the random antiferromagnetic Heisenberg chain exhibit power-law finite-size scaling-specifically for operators governed by both exact and average symmetries-a finding established through strong-disorder renormalization group analysis utilizing [latex]10^5[/latex] disorder realizations and restricted to instances where [latex]r \geq 3[/latex] and signal-to-noise ratio exceeds [latex]10[/latex].](https://arxiv.org/html/2602.02648v1/x4.png)
New research reveals how strong randomness shapes the behavior of quantum systems at critical points, offering insights into the fundamental principles governing their emergent properties.
![The study of neutron and hyperon star mass-radius relationships reveals a characteristic “softening” of the equation of state with the introduction of hyperons - specifically [latex]\Lambda N[/latex] and [latex]\Lambda\Lambda[/latex] interactions - leading to a reduction in maximum mass, a phenomenon known as the hyperon puzzle, and constrained by observational data from NICER and LIGO/Virgo detections.](https://arxiv.org/html/2602.03388v1/x2.png)
New research leverages hypernuclear physics and Bayesian inference to refine our understanding of the forces governing ultra-dense matter inside neutron stars.
![The entanglement entropy, capacity of entanglement, and quantum scrambling time were analyzed across four neutrino oscillation scenarios-SO+NO, SO+IO, NSI+NO, and NSI+IO-using best-fit CP-violating phases, revealing how variations in the diagonal Non-Standard Interaction parameter [latex]\left|\epsilon_{ee}-\epsilon_{\mu\mu}\right|[/latex] impact these quantum information metrics at the baselines and energies of the T2K, NOνA, and DUNE experiments.](https://arxiv.org/html/2602.03748v1/x36.png)
New research explores how interactions beyond the Standard Model impact the speed of entanglement in neutrino oscillations, potentially revealing hidden signatures in long-baseline experiments.
![The universe is conceptualized as an emergent Lorentzian patch within a purely Riemannian four-dimensional space, where the conventional “big bang” is reinterpreted not as an origin, but as a hypersurface [latex]\Sigma_0[/latex] marking a transition in metric signature, and simplified geometries-dependent on a single spatial coordinate [latex]z[/latex]-ensure emergent spacetimes [latex]{\cal M}_{0\pm}[/latex] adhere to the Copernican principle and exhibit [latex](-,+,+,+)[/latex] signature in asymptotic regions.](https://arxiv.org/html/2602.02646v1/bbemergenceplot.jpeg)
A new cosmological model proposes that the Big Bang wasn’t the beginning, but a transition from a fundamentally Euclidean spacetime, offering a potential resolution to the singularity problem.
![The relative variation of final temperature [latex]\delta T\_{f}/T\_{f}[/latex] is shown as a function of [latex]\mathcal{P}[/latex], with theoretical predictions-derived from Eq. (IV.14) and established with [latex]T\_{f,0}=0.6\,\mathrm{MeV}[/latex] and [latex]Q=1.293\,\mathrm{MeV}[/latex]-aligning with experimental bounds defined by Eq. (IV.10).](https://arxiv.org/html/2602.02506v1/x1.png)
New research explores the consequences of a fundamentally ‘fuzzy’ space-time, potentially resolving conflicts between quantum mechanics and our understanding of the universe’s origins.
Researchers have discovered a way to reconstruct geometric information in holographic duality directly from boundary data, potentially simplifying calculations of spacetime structure.
A look at the rise of econophysics and its challenge to traditional economic models by embracing complexity and the power of empirical observation.
![In a superfluid system governed by [latex] h/U = 0.1978 [/latex], [latex] t/U = 0.3 [/latex], and [latex] n = 1 [/latex], the dynamic structure factors [latex] S_D({\bf q},{\omega}) [/latex] and [latex] S_S({\bf q},{\omega}) [/latex] reveal collective modes whose peak positions shift with transferred momentum along the [0,0]→[π,0] direction, demonstrating the system’s nuanced response to external perturbations.](https://arxiv.org/html/2602.01280v1/x4.png)
New theoretical work reveals how to probe the unique momentum characteristics of a two-dimensional superfluid created on optical lattices.
Researchers have demonstrated a novel imaging technique that leverages classically correlated light to reconstruct images remotely, challenging the conventional reliance on quantum entanglement.