Polar modes and isospectrality of Ellis-Bronnikov wormholes
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review D"
DOI: 10.1103/physrevd.107.084024
Abstract: We consider polar perturbations of static Ellis-Bronnikov wormholes and derive the coupled set of perturbation equations for the gravitational and the scalar field. For massless wormholes the perturbations decouple, and we obtain two identical master… read more here.
Keywords: modes isospectrality; polar modes; bronnikov wormholes; ellis bronnikov ... See more keywords
Terahertz-Range Polar Modes in Domain-Engineered BiFeO_{3}.
Sign Up to like & getrecommendations! Published in 2017 at "Physical review letters"
DOI: 10.1103/physrevlett.119.057604
Abstract: The dielectric permittivity and properties of electrically active lattice resonances in nanotwinned BiFeO_{3} crystals have been studied theoretically using an earlier established interatomic potential. The results suggest that an array of 71° domain walls with… read more here.
Keywords: polar modes; modes domain; domain engineered; bifeo ... See more keywords