title: Quantum beats in hydrogen and antihydrogen atoms in an external electric field.
abstract: An effect of quantum beats that arises due to the coherent excitation of 2s and 2p states of hydrogen and antihydrogen atoms in an external electric field is described. It is shown that the quantum beat signal contains terms linear in electric field, i.e., is of opposite sign for the hydrogen and antihydrogen atoms. The conditions for the observation of this effect are discussed.
authors.affiliation: Institute of Physics, St. Petersburg State University, 198904, Uljanovskaya 1, Petrodvorets, St. Petersburg, Russia.
authors.forename: L
authors.initials: L
authors.lastname: Labzowsky
authors.forename: V
authors.initials: V
authors.lastname: Sharipov