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Exponential Last Passage Percolation in the Upper Large Deviation Regime and Multi-Point Distributions for Other LPP Models
Exponential Last Passage Percolation in the Upper Large Deviation Regime and Multi-Point D...
Exponential Last Passage Percolation in the Upper Large Deviation Regime and Multi-Point Distributions for Other LPP Models

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자료유형  
 학위논문 서양
최종처리일시  
20260202105240
ISBN  
9798291569252
DDC  
510
저자명  
Tripathi, Tejaswi.
서명/저자  
Exponential Last Passage Percolation in the Upper Large Deviation Regime and Multi-Point Distributions for Other LPP Models
발행사항  
[Sl] : University of Michigan, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
217 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
주기사항  
Advisor: Baik, Jinho.
학위논문주기  
Thesis (Ph.D.)--University of Michigan, 2025.
초록/해제  
요약This thesis focuses on the study of directed last passage percolation (LPP) models in random media, which are two-dimensional stochastic growth models. These models have numerous applications and exhibit deep connections with random matrix theory and integrable probability. A key quantity in these models is the last passage time, which represents the maximum total weight collected along an up-right path between two points. After appropriate scaling, it has been shown that the last passage time field converges to a universal limit, known as the KPZ fixed point. The thesis is divided into two parts.The first part of this thesis studies exponential LPP under the condition that the last passage time at one point is unusually large. We then analyz effect of this conditioning on the last passage time at other points. We find that this conditioning influences the last passage times in certain regions. After applying a suitable scaling, which differs from the 1:2:3 KPZ scaling, we also derive results for the conditional fluctuations.The second part of the thesis is devoted to computing the multi-point distributions for Poissonian and Brownian LPP with step initial condition. Using these explicit formulas, we provide an alternative proof that the multi-point distributions of Poissonian and Brownian LPP converge to those of the KPZ fixed point under the 1:2:3 scaling.
일반주제명  
Mathematics
일반주제명  
Theoretical mathematics
일반주제명  
Applied mathematics
키워드  
Directed last passage percolation
키워드  
Conditional law
키워드  
Conditional fluctuations
키워드  
Multi-point distribution
기타저자  
University of Michigan Mathematics
기본자료저록  
Dissertations Abstracts International. 87-03B.
전자적 위치 및 접속  
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MARC

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■0820  ▼a510
■1001  ▼aTripathi,  Tejaswi.
■24510▼aExponential  Last  Passage  Percolation  in  the  Upper  Large  Deviation  Regime  and  Multi-Point  Distributions  for  Other  LPP  Models
■260    ▼a[Sl]▼bUniversity  of  Michigan▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a217  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-03,  Section:  B.
■500    ▼aAdvisor:  Baik,  Jinho.
■5021  ▼aThesis  (Ph.D.)--University  of  Michigan,  2025.
■520    ▼aThis  thesis  focuses  on  the  study  of  directed  last  passage  percolation  (LPP)  models  in  random  media,  which  are  two-dimensional  stochastic  growth  models.  These  models  have  numerous  applications  and  exhibit  deep  connections  with  random  matrix  theory  and  integrable  probability.  A  key  quantity  in  these  models  is  the  last  passage  time,  which  represents  the  maximum  total  weight  collected  along  an  up-right  path  between  two  points.  After  appropriate  scaling,  it  has  been  shown  that  the  last  passage  time  field  converges  to  a  universal  limit,  known  as  the  KPZ  fixed  point.  The  thesis  is  divided  into  two  parts.The  first  part  of  this  thesis  studies  exponential  LPP  under  the  condition  that  the  last  passage  time  at  one  point  is  unusually  large.  We  then  analyz  effect  of  this  conditioning  on  the  last  passage  time  at  other  points.  We  find  that  this  conditioning  influences  the  last  passage  times  in  certain  regions.  After  applying  a  suitable  scaling,  which  differs  from  the  1:2:3  KPZ  scaling,  we  also  derive  results  for  the  conditional  fluctuations.The  second  part  of  the  thesis  is  devoted  to  computing  the  multi-point  distributions  for  Poissonian  and  Brownian  LPP  with  step  initial  condition.  Using  these  explicit  formulas,  we  provide  an  alternative  proof  that  the  multi-point  distributions  of  Poissonian  and  Brownian  LPP  converge  to  those  of  the  KPZ  fixed  point  under  the  1:2:3  scaling.
■590    ▼aSchool  code:  0127.
■650  4▼aMathematics
■650  4▼aTheoretical  mathematics
■650  4▼aApplied  mathematics
■653    ▼aDirected  last  passage  percolation
■653    ▼aConditional  law
■653    ▼aConditional  fluctuations
■653    ▼aMulti-point  distribution
■690    ▼a0405
■690    ▼a0642
■690    ▼a0364
■71020▼aUniversity  of  Michigan▼bMathematics.
■7730  ▼tDissertations  Abstracts  International▼g87-03B.
■790    ▼a0127
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17359954▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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