We investigate the impact of pions on simulations of neutron star mergers and explore their effects on gravitational-wave observables. We model both charged and neutral pions as a non-interacting Boson gas with chosen values of constant effective mass. We incorporate these pions into temperature and composition-dependent equations of state, either as a condensate or a thermal population....
Bardeen–Cooper–Schrieffer theory explains how the heat capacity of a superfluid vanishes as the temperature approaches zero. Various mechanisms may suppress the pairing gap in the superfluid, leading to an increased heat capacity. Consequently, this alteration may impact the cooling rate and thermal evolution of neutron stars. The presence of a vortex in superfluid neutron matter adds extra...
In the theory of Quantum Electrodynamics, loop corrections induce nonlinear interactions for the electromagnetic fields, allowing for effects such as light-by-light scattering.
One of the most promising scenarios for its experimental detection regards the quantum vacuum diffraction and birefringence of x-rays at the combined field of two optical lasers.
Reviewing this framework, we will...
Cluster formation is an important signature to investigate the properties of hot and dense nuclear matter. The concept of chemical freeze‐out can be used to explain the distribution of clusters, for instance from heavy‐ion collisions. The primordial distribution is characterized by the thermodynamic properties of matter at freeze‐out and evolves to the observed cluster yields. We discuss...
