Nuclear Theory·nucl-th

Monday·November 16, 2020

8 papers—5 primary·3 cross-listed

06
Nonclassical trajectories in head-on collisions
A Kumar · T Krisnanda · P Arumugam · T Paterek
Rutherford scattering is usually described by treating the projectile either classically or as quantum mechanical plane waves. Here we treat them as wave packets and study their head-on collisions with the stationary target nuclei. We simulate the quantum dynamics of this one-dimensional system and study deviations of the average quantum solution from the classical one. These deviations are traced back to the convexity properties of Coulomb potential. Finally, we sketch how these theoretical findings could be tested in experiments looking for the onset of nuclear reactions.
↳ quant-phnucl-thQuantum(2021)·5 citations
07
NNLO HTLpt predictions for the curvature of the QCD phase transition line
Najmul Haque🇮🇳 · Michael Strickland🇺🇸
We present predictions for the second- and fourth-order curvature coefficients of the QCD phase transition line using the NNLO HTLpt-resummed thermodynamic potential. We present three cases corresponding to (i) $μ_{s} = μ_{l} = μ_{B} /3$ , (ii) $μ_{s} = 0$ , $μ_{l} = μ_{B} /3,$ and (iii) $S = 0$ , $Q / B = 0.4$ , $μ_{l} = μ_{B} /3$ . In all three cases, we find excellent agreement with continuum extrapolated lattice QCD results for $κ_{2}$ , given current statistical uncertainties. We also make HTLpt predictions for $κ_{4}$ in all three cases, finding again excellent agreement with lattice extractions of this coefficient where available.
↳ hep-phnucl-thPRC(2021)·25 citations
08
Classification of Magnetic Vortices by Angular Momentum Conservation
Kenji Fukushima🇯🇵 · Yoshimasa Hidaka🇯🇵 · Ho-Ung Yee🇺🇸
Superfluid vortices are quantum excitations carrying quantized amount of orbital angular momentum in a phase where global symmetry is spontaneously broken. We address a question of whether magnetic vortices in superconductors with dynamical gauge fields can carry nonzero orbital angular momentum or not. We discuss the angular momentum conservation in several distinct classes of examples from crossdisciplinary fields of physics across condensed matter, dense nuclear systems, and cosmology. The angular momentum carried by gauge field configurations around the magnetic vortex plays a crucial role in satisfying the principle of the conservation law. Based on various ways how the angular momentum conservation is realized, we provide a general scheme of classifying magnetic vortices in different phases of matter.
↳ hep-thcond-mat.str-elcond-mat.supr-conhep-ph+1PRResearch(2021)·0 citations

Affiliations

first authorsco-authorsvia INSPIRE

Nonclassical trajectories in head-on collisions

NNLO HTLpt predictions for the curvature of the QCD phase transition line

Classification of Magnetic Vortices by Angular Momentum Conservation

Affiliations