A Non-degenerate Scattering Theory for the Wave Equation on Extremal Reissner–Nordström
Sign Up to like & getrecommendations! Published in 2020 at "Communications in Mathematical Physics"
DOI: 10.1007/s00220-020-03857-3
Abstract: It is known that sub-extremal black hole backgrounds do not admit a (bijective) non-degenerate scattering theory in the exterior region due to the fact that the redshift effect at the event horizon acts as an… read more here.
Keywords: theory wave; equation extremal; non degenerate; wave equation ... See more keywords
Scaling Theory of Wave Confinement in Classical and Quantum Periodic Systems.
Sign Up to like & getrecommendations! Published in 2022 at "Physical review letters"
DOI: 10.1103/physrevlett.129.176401
Abstract: Functional defects in periodic media confine waves-acoustic, electromagnetic, electronic, spin, etc.-in various dimensions, depending on the structure of the defect. While defects are usually modeled by a superlattice with a typical band-structure representation of energy… read more here.
Keywords: wave confinement; band; scaling theory; quantum ... See more keywords