| EPSRC Reference: |
GR/N19519/01 |
| Title: |
CHAOS IN ATOMS AND MOLECULES: THEORY OF SPECTRAL AND TRANSPORT PROPERTIES |
| Principal Investigator: |
Monteiro, Professor T |
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| Department: |
Physics and Astronomy |
| Organisation: |
UCL |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 October 2000 |
Ends: |
30 September 2003 |
Value (£): |
152,079
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| EPSRC Research Topic Classifications: |
| Scattering & Spectroscopy |
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| EPSRC Industrial Sector Classifications: |
| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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We have recently proposed a new approach to the analysis of a class of observable spectra in the regime, based on complex dynamics, which for a broad range of systems, improves significantly on the standard approach (Periodic Orbits) of quantum chaology. While there is a large body of work on Periodic Orbits for the semiclassical interpretation of Molecular spectra, nothing comparable has been done for Saddle Orbits.In 1998, non-hydrogenic atoms and molecules in weak fields were shown to belong to a new generic 'intermediate' spectral class distinct from the regular (Poisson) or chaotic (GOE) behaviour. We will investigate the quantal behaviour for simple Rydberg atoms and molecules and develop a theoretical framework to explain the spectra in terms of the interference between classically allowed and classically forbidden paths.While Rydberg molecules in external fields represent some of the best laboratories for the study of manifestations of chaos in quantum behaviour, there is no adequate theory to describe Rydberg spectra with multiple excitation thresholds. We propose to develop an analogue of Diffractive Periodic Orbit theory suitable for the inelastic case and to apply the theory to a simple Rydberg H2 molecules in static magnetic or electric field.
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Key Findings |
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Potential use in non-academic contexts |
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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