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From the S-Matrix to the Lattice: Bootstrapping QFTs- [electronic resource]
From the S-Matrix to the Lattice: Bootstrapping QFTs - [electronic resource]
From the S-Matrix to the Lattice: Bootstrapping QFTs- [electronic resource]

Detailed Information

자료유형  
 학위논문파일 국외
최종처리일시  
20240214100450
ISBN  
9798379604264
DDC  
530.1
저자명  
Gabai, Barak.
서명/저자  
From the S-Matrix to the Lattice: Bootstrapping QFTs - [electronic resource]
발행사항  
[S.l.]: : Harvard University., 2023
발행사항  
Ann Arbor : : ProQuest Dissertations & Theses,, 2023
형태사항  
1 online resource(181 p.)
주기사항  
Source: Dissertations Abstracts International, Volume: 84-12, Section: B.
주기사항  
Advisor: Yin, Xi.
학위논문주기  
Thesis (Ph.D.)--Harvard University, 2023.
사용제한주기  
This item must not be sold to any third party vendors.
초록/해제  
요약In this thesis, I present our attempts to formulate new bootstrap approaches to Quantum Field Theories. The main goal of these approaches is to offer complementary techniques to the Effective Field Theory paradigm. Namely, techniques that allow one to constrain IR observables using UV knowledge. For example, we may assume the existence of a local UV completion or detailed information about a UV lattice description.The first approach we present utilizes S-matrix bootstrap to turn "experimental" data, the low energy scattering phase, into rigorous information about the existence or nonexistence of resonances in a two-dimensional theory of massive particles. As a zeroth step towards generalization to higher dimensions, we also report on progress in the study of scattering in Chern-Simons theory coupled to fundamental matter, which we hope will enable formulation of its S-matrix bootstrap problem in the near future. It will be the first S-matrix bootstrap problem studied in which Anyonic properties are directly involved. In order to set up the second approach, we have studied the line operators that can appear in the conformal Chern-Simons theory coupled to fundamental matter. Their endpoints are the Anyons of the conformal theory. The lines obey constraints from conformal symmetry and a set of loop equations which allow setting up a bootstrap for correlators of straight lines.In the third approach, we show that equations of motion together with reflection positivity severely constrain correlators of the Ising statistical model on the lattice. Namely, we derive rigorous two-sided bounds on spin correlators through semi-definite programming. 
일반주제명  
Theoretical physics.
일반주제명  
Quantum physics.
키워드  
S-matrix
키워드  
Quantum field theories
키워드  
Bootstrap problem
키워드  
Anyonic properties
키워드  
UV lattice
기타저자  
Harvard University Physics
기본자료저록  
Dissertations Abstracts International. 84-12B.
기본자료저록  
Dissertation Abstract International
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■00520240214100450
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■020    ▼a9798379604264
■035    ▼a(MiAaPQ)AAI30491985
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a530.1
■1001  ▼aGabai,  Barak.▼0(orcid)0000-0002-6374-642X
■24510▼aFrom  the  S-Matrix  to  the  Lattice:  Bootstrapping  QFTs▼h[electronic  resource]
■260    ▼a[S.l.]:▼bHarvard  University.  ▼c2023
■260  1▼aAnn  Arbor  :▼bProQuest  Dissertations  &  Theses,  ▼c2023
■300    ▼a1  online  resource(181  p.)
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  84-12,  Section:  B.
■500    ▼aAdvisor:  Yin,  Xi.
■5021  ▼aThesis  (Ph.D.)--Harvard  University,  2023.
■506    ▼aThis  item  must  not  be  sold  to  any  third  party  vendors.
■520    ▼aIn  this  thesis,  I  present  our  attempts  to  formulate  new  bootstrap  approaches  to  Quantum  Field  Theories.  The  main  goal  of  these  approaches  is  to  offer  complementary  techniques  to  the  Effective  Field  Theory  paradigm.  Namely,  techniques  that  allow  one  to  constrain  IR  observables  using  UV  knowledge.  For  example,  we  may  assume  the  existence  of  a  local  UV  completion  or  detailed  information  about  a  UV  lattice  description.The  first  approach  we  present  utilizes  S-matrix  bootstrap  to  turn  "experimental"  data,  the  low  energy  scattering  phase,  into  rigorous  information  about  the  existence  or  nonexistence  of  resonances  in  a  two-dimensional  theory  of  massive  particles.  As  a  zeroth  step  towards  generalization  to  higher  dimensions,  we  also  report  on  progress  in  the  study  of  scattering  in  Chern-Simons  theory  coupled  to  fundamental  matter,  which  we  hope  will  enable  formulation  of  its  S-matrix  bootstrap  problem  in  the  near  future.  It  will  be  the  first  S-matrix  bootstrap  problem  studied  in  which  Anyonic  properties  are  directly  involved. In  order  to  set  up  the  second  approach,  we  have  studied  the  line  operators  that  can  appear  in  the  conformal  Chern-Simons  theory  coupled  to  fundamental  matter.  Their  endpoints  are  the  Anyons  of  the  conformal  theory.  The  lines  obey  constraints  from  conformal  symmetry  and  a  set  of  loop  equations  which  allow  setting  up  a  bootstrap  for  correlators  of  straight  lines.In  the  third  approach,  we  show  that  equations  of  motion  together  with  reflection  positivity  severely  constrain  correlators  of  the  Ising  statistical  model  on  the  lattice.  Namely,  we  derive  rigorous  two-sided  bounds  on  spin  correlators  through  semi-definite  programming. 
■590    ▼aSchool  code:  0084.
■650  4▼aTheoretical  physics.
■650  4▼aQuantum  physics.
■653    ▼aS-matrix
■653    ▼aQuantum  field  theories
■653    ▼aBootstrap  problem
■653    ▼aAnyonic  properties
■653    ▼aUV  lattice
■690    ▼a0753
■690    ▼a0599
■71020▼aHarvard  University▼bPhysics.
■7730  ▼tDissertations  Abstracts  International▼g84-12B.
■773    ▼tDissertation  Abstract  International
■790    ▼a0084
■791    ▼aPh.D.
■792    ▼a2023
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16932378▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.
■980    ▼a202402▼f2024

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