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The Committor in Quantum Systems for Transition States, Reaction Mechanisms, and Coherent Control
The Committor in Quantum Systems for Transition States, Reaction Mechanisms, and Coherent ...
The Committor in Quantum Systems for Transition States, Reaction Mechanisms, and Coherent Control

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20250211151427
ISBN  
9798384447498
DDC  
542
저자명  
Anderson, Michelle.
서명/저자  
The Committor in Quantum Systems for Transition States, Reaction Mechanisms, and Coherent Control
발행사항  
[Sl] : University of California, Berkeley, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
163 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-03, Section: B.
주기사항  
Advisor: Limmer, David T.
학위논문주기  
Thesis (Ph.D.)--University of California, Berkeley, 2024.
초록/해제  
요약Understanding reaction dynamics in chemical systems is the first step towards manipulating those reactions to improve efficiency or avoid undesired products. Computational modeling plays a central role in the understanding of reaction dynamics, with that role ever increasing as computational power grows. Such modeling remains challenging, however. Studying reaction mechanisms in classical systems often proves extremely complicated due to the rare nature of reactive events and the many degrees of freedom that are involved. Classical reactions in solution are complicated further by the interactions of the system with the solvent degrees of freedom. The study of reaction mechanisms becomes more complicated still in quantum systems, where confounding behaviors such as interference and tunneling may occur.Many powerful methods for understanding classical reaction mechanisms, adept at circumventing the problems posed by many degrees of freedom and rare events, have been developed, including transition path theory. Transition path theory is a method built on the committor, the probability for a reaction to occur, which defines a perfect reaction coordinate and the transition state. In this thesis we employ the Redfield quantum master equations to extend transition path theory to address the problems in common between classical and quantum reaction mechanism studies as well as those unique to quantum reactions. We extend this quantum transition path theory to address systems in and out of equilibrium, then derive a general quantum committor which is applicable to the study of systems in which the assumptions underlying quantum transition path theory do not apply, allowing us to quantify the impact of coherent effects on quantum reactions and propose means for coherent quantum control.
일반주제명  
Computational chemistry
일반주제명  
Physical chemistry
일반주제명  
Quantum physics
일반주제명  
Chemistry
키워드  
Conical intersections
키워드  
Polaritons
키워드  
Quantum coherent effects
키워드  
Reaction mechanisms
키워드  
Redfield master equation
키워드  
Transition path theory
기타저자  
University of California, Berkeley Chemistry
기본자료저록  
Dissertations Abstracts International. 86-03B.
전자적 위치 및 접속  
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MARC

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■0820  ▼a542
■1001  ▼aAnderson,  Michelle.
■24510▼aThe  Committor  in  Quantum  Systems  for  Transition  States,  Reaction  Mechanisms,  and  Coherent  Control
■260    ▼a[Sl]▼bUniversity  of  California,  Berkeley▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a163  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-03,  Section:  B.
■500    ▼aAdvisor:  Limmer,  David  T.
■5021  ▼aThesis  (Ph.D.)--University  of  California,  Berkeley,  2024.
■520    ▼aUnderstanding  reaction  dynamics  in  chemical  systems  is  the  first  step  towards  manipulating  those  reactions  to  improve  efficiency  or  avoid  undesired  products.  Computational  modeling  plays  a  central  role  in  the  understanding  of  reaction  dynamics,  with  that  role  ever  increasing  as  computational  power  grows.  Such  modeling  remains  challenging,  however.  Studying  reaction  mechanisms  in  classical  systems  often  proves  extremely  complicated  due  to  the  rare  nature  of  reactive  events  and  the  many  degrees  of  freedom  that  are  involved.  Classical  reactions  in  solution  are  complicated  further  by  the  interactions  of  the  system  with  the  solvent  degrees  of  freedom.  The  study  of  reaction  mechanisms  becomes  more  complicated  still  in  quantum  systems,  where  confounding  behaviors  such  as  interference  and  tunneling  may  occur.Many  powerful  methods  for  understanding  classical  reaction  mechanisms,  adept  at  circumventing  the  problems  posed  by  many  degrees  of  freedom  and  rare  events,  have  been  developed,  including  transition  path  theory.  Transition  path  theory  is  a  method  built  on  the  committor,  the  probability  for  a  reaction  to  occur,  which  defines  a  perfect  reaction  coordinate  and  the  transition  state.  In  this  thesis  we  employ  the  Redfield  quantum  master  equations  to  extend  transition  path  theory  to  address  the  problems  in  common  between  classical  and  quantum  reaction  mechanism  studies  as  well  as  those  unique  to  quantum  reactions.  We  extend  this  quantum  transition  path  theory  to  address  systems  in  and  out  of  equilibrium,  then  derive  a  general  quantum  committor  which  is  applicable  to  the  study  of  systems  in  which  the  assumptions  underlying  quantum  transition  path  theory  do  not  apply,  allowing  us  to  quantify  the  impact  of  coherent  effects  on  quantum  reactions  and  propose  means  for  coherent  quantum  control.
■590    ▼aSchool  code:  0028.
■650  4▼aComputational  chemistry
■650  4▼aPhysical  chemistry
■650  4▼aQuantum  physics
■650  4▼aChemistry
■653    ▼aConical  intersections
■653    ▼aPolaritons
■653    ▼aQuantum  coherent  effects
■653    ▼aReaction  mechanisms
■653    ▼aRedfield  master  equation
■653    ▼aTransition  path  theory
■690    ▼a0219
■690    ▼a0494
■690    ▼a0599
■690    ▼a0485
■71020▼aUniversity  of  California,  Berkeley▼bChemistry.
■7730  ▼tDissertations  Abstracts  International▼g86-03B.
■790    ▼a0028
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17161664▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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