EDITORS' SUGGESTION
The numerical simulations of binary neutron star mergers is an important, but computationally expensive endeavor. The authors demonstrate that significant computational savings can be realized by adopting a hybrid approach to these simulations by using a fully dynamical spacetime solver initially, but switching to a conformally-flat spacetime solver as the system evolves.
Harry Ho-Yin Ng et al.
Phys. Rev. D 109, 064061 (2024)
EDITORS' SUGGESTION
The authors study spectral and Krylov complexity in quantum billiard systems at finite temperature. They show that spectral complexity may be used to probe the transition between the chaotic and integrable configurations for the billiard systems. For Krylov complexity, they study the associated Lanczos coefficients showing that their growth rate satisfies the conjectured generalized chaos bound, and that they produce an exponential growth of the Krylov complexity at early times.
Hugo A. Camargo et al.
Phys. Rev. D 109, 046017 (2024)
EDITORS' SUGGESTION
The authors use data from the LHCb collaboration for the helicity amplitudes in the –> decays to compute the entanglement among the polarizations of the final vector mesons. They show explicitly that the Bell inequality is violated, in accord with the general principles of quantum mechanics.
M. Fabbrichesi, R. Floreanini, E. Gabrielli, and L. Marzola
Phys. Rev. D 109, L031104 (2024)