Some tunneling processes are described by unstable semiclassical solutions.
We develop a method to stabilize solutions by introducing an imaginary term
into the equations of motion. The new term is proportional to the
regularization parameter epsilon; the original unstable solutions, as well
as the correct value of the tunneling probability are recovered in the
limit epsilon->0. Our method is derived from the first principles and
generically applicable. We confirm the method by comparing the
semiclassical results for the tunneling probability with the exact
quantum-mechanical results.
Дата события: среда, 28 Марта, 2007 - 15:00
Событие:
Доклад(ы):
Tunneling via unstable semiclassical solutions: A systematic approach.
Место проведения: Россия, Москва, микрорайон Ленинские Горы, 1с58 (корпус высоких энергий), комната 3-24
Web-page: http://theory.sinp.msu.ru/dokuwiki/doku.php?id=seminars:seminars
Научный руководитель:
Секретарь: Байков Павел Анатольевич
Структурные подразделения: