Rigorous formulation of quantum transition state theory and its dynamical corrections
We describe a procedure for computing the thermal rate constants for infrequent events that occur in complicated quantum mechanical systems. Following the ideas of Gillan, the procedure focuses on the equilibrium statistics of the centroids for the imaginary time quantum paths. We argue that the ima...
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| Veröffentlicht in: | The Journal of chemical physics 1989-12, Vol.91 (12), p.7749-7760 |
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| container_end_page | 7760 |
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| container_issue | 12 |
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| container_title | The Journal of chemical physics |
| container_volume | 91 |
| creator | VOTH, G. A CHANDLER, D MILLER, W. H |
| description | We describe a procedure for computing the thermal rate constants for infrequent events that occur in complicated quantum mechanical systems. Following the ideas of Gillan, the procedure focuses on the equilibrium statistics of the centroids for the imaginary time quantum paths. We argue that the imaginary time statistics can be used to efficiently bias Monte Carlo sampling of the real time reaction dynamics. Consideration of imaginary time paths or equilibrium statistics alone leads to a quantum transition state theory. Analytical versions of this transition state theory are developed with the aid of a variational principle. Numerical applications of the quantum transition state theory are given for the one-dimensional Eckart barrier problem and for the nonseparable two-dimensional collinear H2+H reaction. Remarkably accurate results are obtained. The quantum transition state theory we describe provides a rigorous basis and generalizes algorithms recently employed to treat electron transfer and also ionization in polar media. |
| doi_str_mv | 10.1063/1.457242 |
| format | Article |
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A</creatorcontrib><creatorcontrib>CHANDLER, D</creatorcontrib><creatorcontrib>MILLER, W. H</creatorcontrib><title>Rigorous formulation of quantum transition state theory and its dynamical corrections</title><title>The Journal of chemical physics</title><description>We describe a procedure for computing the thermal rate constants for infrequent events that occur in complicated quantum mechanical systems. Following the ideas of Gillan, the procedure focuses on the equilibrium statistics of the centroids for the imaginary time quantum paths. We argue that the imaginary time statistics can be used to efficiently bias Monte Carlo sampling of the real time reaction dynamics. Consideration of imaginary time paths or equilibrium statistics alone leads to a quantum transition state theory. Analytical versions of this transition state theory are developed with the aid of a variational principle. Numerical applications of the quantum transition state theory are given for the one-dimensional Eckart barrier problem and for the nonseparable two-dimensional collinear H2+H reaction. Remarkably accurate results are obtained. The quantum transition state theory we describe provides a rigorous basis and generalizes algorithms recently employed to treat electron transfer and also ionization in polar media.</description><subject>400201 - Chemical & Physicochemical Properties</subject><subject>ALGORITHMS</subject><subject>Atomic and molecular collision processes and interactions</subject><subject>Atomic and molecular physics</subject><subject>CHEMICAL REACTION KINETICS</subject><subject>ELECTRON TRANSFER</subject><subject>Exact sciences and technology</subject><subject>General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.)</subject><subject>INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY</subject><subject>IONIZATION</subject><subject>KINETICS</subject><subject>MATHEMATICAL LOGIC</subject><subject>MECHANICS</subject><subject>Physics</subject><subject>QUANTUM MECHANICS</subject><subject>REACTION KINETICS</subject><issn>0021-9606</issn><issn>1089-7690</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1989</creationdate><recordtype>article</recordtype><recordid>eNo90E1LxDAQBuAgCq6r4E8I4sFL18lX0xxl8QsWBHHPIU1TN9I2a5Ie9t_bteJpYHgY5n0RuiawIlCye7LiQlJOT9CCQKUKWSo4RQsASgpVQnmOLlL6AgAyqQXavvvPEMOYcBtiP3Ym-zDg0OLv0Qx57HGOZkj-d5uyyQ7nnQvxgM3QYJ8Tbg6D6b01HbYhRmePMl2is9Z0yV39zSXaPj1-rF-Kzdvz6_phU1jGZS5sZR2xRFWu4lwyJRsha9EwcIYLRqngrJWG2bqxwtVS8Zpy0dSEliCryjRsiW7muyFlr5P12dmdDcMw_aEF4UIJmNDdjGwMKUXX6n30vYkHTUAfO9NEz51N9Hame5OmSO2U3fr070sJJRDCfgCD9mua</recordid><startdate>19891215</startdate><enddate>19891215</enddate><creator>VOTH, G. 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A</creatorcontrib><creatorcontrib>CHANDLER, D</creatorcontrib><creatorcontrib>MILLER, W. H</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>The Journal of chemical physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>VOTH, G. A</au><au>CHANDLER, D</au><au>MILLER, W. H</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Rigorous formulation of quantum transition state theory and its dynamical corrections</atitle><jtitle>The Journal of chemical physics</jtitle><date>1989-12-15</date><risdate>1989</risdate><volume>91</volume><issue>12</issue><spage>7749</spage><epage>7760</epage><pages>7749-7760</pages><issn>0021-9606</issn><eissn>1089-7690</eissn><coden>JCPSA6</coden><abstract>We describe a procedure for computing the thermal rate constants for infrequent events that occur in complicated quantum mechanical systems. Following the ideas of Gillan, the procedure focuses on the equilibrium statistics of the centroids for the imaginary time quantum paths. We argue that the imaginary time statistics can be used to efficiently bias Monte Carlo sampling of the real time reaction dynamics. Consideration of imaginary time paths or equilibrium statistics alone leads to a quantum transition state theory. Analytical versions of this transition state theory are developed with the aid of a variational principle. Numerical applications of the quantum transition state theory are given for the one-dimensional Eckart barrier problem and for the nonseparable two-dimensional collinear H2+H reaction. Remarkably accurate results are obtained. The quantum transition state theory we describe provides a rigorous basis and generalizes algorithms recently employed to treat electron transfer and also ionization in polar media.</abstract><cop>Woodbury, NY</cop><pub>American Institute of Physics</pub><doi>10.1063/1.457242</doi><tpages>12</tpages></addata></record> |
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| ispartof | The Journal of chemical physics, 1989-12, Vol.91 (12), p.7749-7760 |
| issn | 0021-9606 1089-7690 |
| language | eng |
| recordid | cdi_osti_scitechconnect_5145950 |
| source | AIP Digital Archive |
| subjects | 400201 - Chemical & Physicochemical Properties ALGORITHMS Atomic and molecular collision processes and interactions Atomic and molecular physics CHEMICAL REACTION KINETICS ELECTRON TRANSFER Exact sciences and technology General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.) INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY IONIZATION KINETICS MATHEMATICAL LOGIC MECHANICS Physics QUANTUM MECHANICS REACTION KINETICS |
| title | Rigorous formulation of quantum transition state theory and its dynamical corrections |
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