operator theory, quasinormal operators is a class of bounded operators defined by weakening the requirements of a normal operator. Every quasinormal operator...

quasinormal and subnormal operators. A natural question is how are the quasinormal and subnormal operators related. We will show that a quasinormal operator...

of operators that include normal operators are (in order of inclusion) Hyponormal operators Normaloids Paranormal operators Quasinormal operators Subnormal...

hyponormal operator (in particular, a subnormal operator, a quasinormal operator and a normal operator) is paranormal. If T is a paranormal, then Tn is...

been suggested: for example, an argument due to Olaf Dreyer based on quasinormal modes. Another more recent interpretation is that it is the measure of...

squeezed coherent state density state Fock state, Fock space vacuum state quasinormal mode no-cloning theorem quantum entanglement spinor, spinor group, spinor...

generalize to normal operators on infinite-dimensional Hilbert spaces. For example, a bounded operator satisfying (9) is only quasinormal. It is occasionally...

Chapter 8 pp. 307–310. Gonzalez, P. A.; Vasquez, Y. (2014), "Dirac Quasinormal Modes of New Type Black Holes in New Massive Gravity", Eur. Phys. J....

tensor Parameterized post-Newtonian formalism Post-Newtonian expansion Quasinormal mode This assumes that the background spacetime is flat. Perturbation...