Nature Physics - The fundamental ... In other words, PT symmetry requires that the real part of the refractive index (the potential, in the language of Schrödinger) is an even function of ...

In a recent study, Sidhu et al. show that depletion of the pla virulence gene in Yersinia pestis ancient and modern pandemic strains reduced their virulence, thereby promoting the pathogen’s ...

An odd array of clay and wood vessels are used in Athirathram a Vedic fire ritual writes Ranjeni A SinghAthirathram is a 5 000yearold complex Vedic ritual to cleanse the atmosphere The Varthathe Trust ...