A method for finding the renormalization group (RG) improved effective Lagrangian for a massive interacting field theory in curved spacetime is presented. As a particular example, the λφ-theory is considered and the RG improved effective Lagrangian is explicitly found up to second order in the curvature tensors. As a further application, the curvature-induced phase transitions are discussed for...

Battiston et al. (arXiv:2110.06023) provide a comprehensive overview of how investigations complex systems should take into account interactions between more than two elements, which can be modelled by hypergraphs and studied via topological data analysis. Following separate line enquiry, broad literature has developed information-theoretic tools to characterize high-order interdependencies fro...

Based on the analysis of operation principles of conventional self-exciting electronic ballast, the cause of high switching loss has been researched. In order to reduce switch temperature and increase the reliability of the whole circuit, drive circuit of self-exciting electronic ballast has been improved to achieve soft switch. Circuit simulations and experimental results are coincided with th...