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Summary
Gregory Ezra was born in London, England, in 1953. He received his undergraduate and graduate degrees in Chemistry from Oxford University. After obtaining his D.Phil. in 1980 with P. W. Atkins, he went to the University of Chicago as a NATO Postdoctoral Fellow to work with R. S. Berry. In 1982 he joined the Chemistry Department at Cornell University, where he is now Professor. Dr. Ezra has received Sloan and Dreyfus fellowships, and in 1988 was awarded the Medal of the International Academy of Quantum Molecular Science. He is a Fellow of the American Physical Society. Dr. Ezra has served on the editorial boards of the Journal of Nonlinear Science and the Journal of Mathematical Chemistry, and is currently on the board of the open access journal Advances in Physical Chemistry. He is a member of the graduate field of Applied Mathematics at Cornell.
Dr. Ezra's research covers many aspects of dynamics in chemistry and physics. He is interested in the role of symmetry in physical problems, in classical, semiclassical and quantum approaches to atomic and molecular systems, and in geometrical aspects of Hamiltonian and non-Hamiltonian dynamics.
| Current Institution | Cornell University |
| Department | Chemistry and Chemical Biology |
| Disciplines | |
| Birthday | September 16,1953 |
| Address | Baker Laboratory Ithaca New York 14853 United States Phone: 607-255-3949 |
Profile viewed 404 times
Education
Oxford University
D.Phil.,
Chemistry
(1980)
Oxford University
M.A.,
Chemistry
Work Experience
Professor of Chemistry and Chemical Biology
Cornell University
(1993 - Present)
Associate Professor of Chemistry
Cornell University
(1988 - 1993)
Achievements
- Senior Scholar, Christ Church, Oxford (1976 - 1980)
General
Publication Summary
Publications
- Unimolecular decay lifetimes and intramolecular energy redistribution in HOOH: sensitivity to potential energy surface, C. Getino, B.G. Sumpter, J. Santamaria and G.S. Ezra, J. Phys. Chem. 93, 3877-3880 (1989).
- Comparison of classical and quantum phase space structure of nonrigid molecules: LiCN, R.M. Benito, F. Borondo, J.H. Kim, B.G. Sumpter and G.S. Ezra, Chem. Phys. Lett. 161, 60-66 (1989).
- Ab initio study of stretch-bend coupling in HOOH, C. Getino, B.G. Sumpter, J. Santamaria and G.S. Ezra, J. Phys. Chem. 94, 3995-4000 (1990).
- Turnstiles, transport and unimolecular decay in multidimensional Hamiltonian maps: application to van der Waals predissociation, R.E. Gillilan and G.S. Ezra, J. Chem. Phys. 94, 2648-2668 (1991).
- Periodic orbits and the classical-quantum correspondence for doubly-excited states of two-electron atoms, J.H. Kim and G.S. Ezra, Proc. Trieste Workshop Quantum Chaos, pp 436-448, Ed. H. Caldiera, M. Gutzwiller and R. Ramaswamy (World Scientific, 1991).
- Semiclassical cycle expansion for the Helium atom, G.S. Ezra, K. Richter, G. Tanner and D. Wintgen, J. Phys. B 24, L413-L420 (1991).
- Classical trajectory studies of intramolecular dynamics: local mode dynamics, rotation-vibration interaction and the structure of multidimensional phase space, G.S. Ezra, in Intramolecular Dynamics and Nonlinear Dynamics, pp 1-40, Ed. W.L. Hase (JAI Press, 1992).
- Vibrational deactivation in planar ion-neutral collisions: a classical trajectory study of the fixed-angle approximation, G. Ramachandran and G.S. Ezra, Chem. Phys. Lett. 199, 397-402 (1992).
- Vibrational deactivation in Kr/O_2+ collisions: role of complex formation and potential anisotropy, G. Ramachandran and G.S. Ezra, J. Chem. Phys. 97, 6322-6334 (1992).
- Vibrationally induced axis switching: a novel mechanism for vibration-rotation coupling, H. Li, G.S. Ezra and L.A. Philips, J. Chem. Phys. 97, 5956-5963 (1992).
- Semiclassical density of states at symmetric pitchfork bifurcations in coupled quartic oscillators, K.M. Atkins and G.S. Ezra, Phys. Rev. A 50, 93-97 (1994).
- A regularized semiclassical radial propagator for the Coulomb potential, R. Manning and G.S. Ezra, Phys. Rev. A 50, 954-966 (1994).
- Direct and complex forming collisions in a model for the barrierless proton transfer reaction: CH_3OH + -OCH_3 --> CH_3O- + HOCH_3, R.J. Hinde and G.S. Ezra, Chem. Phys. Lett. 228, 333-340 (1994).
- Orbiting complex formation in Na^+/N_2 collisions: a phase space view [Invited contribution to S. Rice issue], G. Ramachandran and G.S. Ezra, J. Phys. Chem. 99, 2435-2443 (1995).
- Classical-quantum correspondence and the transition from regular to chaotic dynamics in coupled quartic oscillators, K.M. Atkins and G.S. Ezra, Phys. Rev. E 51, 1822-1837 (1995).
- Periodic orbit analysis of molecular vibrational spectra: 1:1 resonant coupled modes, D.C. Rouben and G.S. Ezra, J. Chem. Phys. 103, 1375-1383 (1995).
- Periodic orbit analysis of molecular vibrational spectra: Spectral patterns and dynamical bifurcations in Fermi resonant systems, G.S. Ezra, J. Chem. Phys. 104, 26-35 (1996).
- A uniform regularized semiclassical propagator for the 1/x^2 potential, R. Manning and G.S. Ezra, Phys. Rev. A 53, 661 (1996).
- Analysis of quantum eigenstates in a 3-mode system, S. Keshavamurthy and G.S. Ezra, Proc. NATO ASI "Hamiltonian Systems with Three or More Degrees of Freedom", Ed. by C. Simo, p 435-439 (1999).
- Assigning vibrational spectra of highly-excited molecules: Classical and quantum vibrational dynamics of the H_{2}O molecule, S. Keshavamurthy and G.S. Ezra, Chem. Phys. Lett. 259, 81-90 (1996).
- Eigenstate assignments and the quantum-classical correspondence for highly-excited states of the Baggot H_{2}O Hamiltonian, S. Keshavamurthy and G.S. Ezra, J. Chem. Phys. 107, 156-179 (1997).
- Classical-quantum correspondence and the analysis of highly excited states: Periodic orbits, rational tori, and beyond, G.S. Ezra, Chapter in Advances in Classical Trajectory Methods , Vol. 3, pp 35-72, edited by W.L. Hase (JAI Press, 1998).
- Comment on `Local Frequency analysis and the structure of classical phase space of the LiNC/LiCN molecular system' [J. Chem. Phys. 108, 63 (1998)],
- C.C. Martens, M.J. Davis and G.S. Ezra, J. Chem. Phys. 109, 6507 (1998).
- Global analysis of periodic orbit bifurcations in coupled Morse systems: Time-reversal symmetry, permutational representations and codimension-2 collisions, M. Tsuchiya and G.S. Ezra, CHAOS 9, 819-840 (1999).
- Geometric approach to response theory in non-Hamiltonian systems, G. S. Ezra, J. Math. Chem. 32, 339-359 (2002).
- "Differential forms are taking over the world. I don't use vectors, Fortran, or Roman numerals, all for the same reasons." (W. Burke) On the statistical mechanics of non-Hamiltonian systems: the generalized Liouville equation, entropy, and time-dependent metrics, G. S. Ezra, J. Math. Chem. 35, 29-53 (2004).
- "What can you prove with exterior algebra that you cannot prove without it? Whenever you hear this question ... be assured that you are likely to be in the presence of something important." (G-C. Rota) Optical response functions with semiclassical dynamics, W. G. Noid, G. S. Ezra, and R. F. Loring, J. Chem. Phys. 119 , 1003-1020 (2003).
- Vibrational echoes: Dephasing, rephasing, and the stability of classical trajectories, W. G. Noid, G. S. Ezra, and R. F. Loring, J. Phys. Chem. B 108, 6536-6543 (2004).
- Semiclassical calculation of the vibrational echo, W. G. Noid, G. S. Ezra, and R. F. Loring, J. Chem. Phys. 120, 1491-1499 (2004).
- Quantum monodromy for diatomic molecules in combined electrostatic and pulsed nonresonant laser fields, C. A. Arango, W. W. Kennerly, and G. S. Ezra, Chem. Phys. Lett. 392, 486-492 (2004).
- Quantum and classical mechanics of diatomic molecules in tilted fields, C. A. Arango, W. W. Kennerly, and G. S. Ezra, J. Chem. Phys. 122, Art. No. 184303 (2005).
- Semiclassical IVR approach to rotational excitation of nonpolar diatomic molecules by nonresonant laser pulses, C. A. Arango, W. W. Kennerly, and G. S. Ezra, Chem. Phys. Lett. 420, 296-303 (2006).
- On the derivation of the Herman-Kluk propagator, S. A. Deshpande and G. S. Ezra, J. Phys. A39, 5067-5078 (2006).
- Reversible measure-preserving integrators for non-Hamiltonian systems, G. S. Ezra, J. Chem. Phys. 125, Art. No. 034104 (2006).
- Quantum state reconstruction for rigid rotors, S. A. Deshpande and G. S. Ezra, Chem. Phys. Lett. 440, 341-347 (2007).
- Classical mechanics of dipolar asymmetric top molecules in collinear static electric and nonresonant linearly polarized laser fields: energy-momentum diagrams, bifurcations and accessible configuration space, C. A. Arango and G. S. Ezra, Int. J. Bifurc. Chaos 18, 1127-1149 (2008).
- Fragmentation kinetics of a Morse oscillator chain under tension, J. N. Stember and G. S. Ezra, Chem. Phys. 337, 11-32 (2007)
- Impenetrable barriers in phase space for deterministic thermostats, G. S. Ezra and S. Wiggins, J. Phys. A (Fast Track Communication) 42, 042001 (2009)
- Microcanonical rates, gap times, and phase space dividing surfaces, G. S. Ezra, H. Waalkens and S. Wiggins, J. Chem. Phys.130, 164118 (2009)
- Phase space geometry and reaction dynamics near index two saddles, G. S. Ezra and S. Wiggins, J. Phys. A 42, 205101 (2009)
- Bulgac-Kusnezov-Nos\'e-Hoover thermostats, A. Sergi and G. S. Ezra, Phys. Rev. E 81, 036705 (2010)
Books
Other Publications
