The European Physical Journal Plus

Abstract We develop a mathematical framework for analyzing inter-regional earthquake triggering using multi-lag transfer entropy. While transfer entropy itself is well-established in information theory, its systematic application to discriminate earthquake triggering mechanisms across tectonic regions has not been previously formalized. We introduce the Multi-Lag Significance Profile (MLSP) as a …

Abstract Massless vector and scalar Green’s functions are obtained in closed form for a plane gravitational wave spacetime using three independent methods: direct solution of the Green-function equation and construction via the DeWitt and Hadamard recursive schemes. The results coincide exactly with the DeWitt–Schwinger expansion, indicating no massless particles production in this background. Co…

Abstract In this work, we study how the spin of particle modes influences particle creation, greybody factors, absorption, and evaporation of a black hole within the framework of modified electrodynamics in f ( R , T ) gravity, recently proposed in Róis et al. (Phys Rev D 111(12):124044, 2025). All spin sectors-scalar, vector, tensor, and spinorial-are analyzed to obtain the corresponding feature…

Abstract The present model incorporates a bioheat transport framework within multilayered brain tissue, accounting for blood perfusion and thermal conductivity as temperature-dependent variables, while also considering porosity during magnetic fluid hyperthermia. Additionally, the skin’s surface is subjected to a nonlinear boundary condition of heat-flux kind. The treatment’s temperature level is…

Abstract We discuss the propagation of harmonic and transient waves for systems governed by a wave equation with memory whose integral kernel involves ratios of modified Bessel functions of the first kind in the Laplace domain. In particular, the investigation of transient waves is carried out by means of a fully numerical approach based on the Talbot method for the numerical inversion of Laplace…