Probing quantal dynamics of mixed phase space systems with noise

Journal Article · Mon Nov 01 04:00:00 EST 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.71.2895· OSTI ID:5752021

Sirko, L; Bellermann, M R.W.; Haffmans, A; Koch, P M; Richards, D ^[1]

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1. Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warszawa (Poland) Department of Physics, State University of New York, Stony Brook, New York 11794-3800 (United States) Mathematics Faculty, Open University, Milton Keynes, MK7 6AA (United Kingdom)

We study how weak broadband noise affects 30.36 GHz 10%- ionization'' thresholds [ital F](10%) of [ital n][sub 0]=54,...,72 H atoms. Calculations confirm that increased noise lowers [ital F](10%) for most [ital n][sub 0]'s raises some, but affects others little. We show noise to be a useful spectroscopic tool for uncovering novel quantal phenomena such as scarred states, which we link semiclassically to approximately adiabatic evolution near the separatrix of a nonlinear resonance island. Our results apply generally to the quantal behavior of classical mixed phase space systems.

• OSTI ID: 5752021
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 71:18; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

661100 -- Classical & Quantum Mechanics-- (1992-)
664200* -- Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ADIABATIC APPROXIMATION
ELECTRIC FIELDS
ELEMENTS
ENERGY
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUCTUATIONS
HARMONIC POTENTIAL
HYDROGEN
IONIZATION
MATHEMATICAL SPACE
MULTI-PHOTON PROCESSES
NONLINEAR PROBLEMS
NONMETALS
NUCLEAR POTENTIAL
PHASE SPACE
PHOTOIONIZATION
POTENTIALS
PROBABILITY
RESONANCE
SEMICLASSICAL APPROXIMATION
SPACE
THRESHOLD ENERGY
VARIATIONS