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A Field Theory of Localization
A Field Theory of Localization
A Field Theory of Localization

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20260202104815
ISBN  
9798293835232
DDC  
530
저자명  
Parhizkar, Alireza.
서명/저자  
A Field Theory of Localization
발행사항  
[Sl] : University of Maryland, College Park, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
307 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-03, Section: B.
주기사항  
Advisor: Galitski, Victor.
학위논문주기  
Thesis (Ph.D.)--University of Maryland, College Park, 2025.
초록/해제  
요약In general wave-functions spread and propagate. However, there are certain situations where they cease to do so. Those situations are equivalently interpreted as frozen or localized quantum particles. In the context of condensed matter physics, this localization---the vanishing of the group velocity for a large class of states---is related to the appearance of flat bands in the band structure of a quantum system. The flat bands are important occurrences for multiple reasons, one of them being that on a flat band the kinematics of a system is non-existent and therefore the physics is completely governed by the interaction terms which are responsible for many exotic states of matter. Therefore, one expects that a flat band is a bedrock for finding exotic states. The appearance of flat bands is also, at times, a puzzling phenomenon. For example, the recurrent flat bands in twisted bilayer graphene for different twist angles are not yet completely understood, even at the single particle level, and they are surprising enough that the angles at which they appear are called ``magic'' angles. Here, the field theoretic approach to these interesting phenomena is presented.
일반주제명  
Physics
일반주제명  
Condensed matter physics
일반주제명  
Theoretical physics
키워드  
Anomalies
키워드  
Bilayer systems
키워드  
Flat bands
키워드  
Localization
키워드  
Quantum field theory
키워드  
Strongly correlated electrons
기타저자  
University of Maryland, College Park Physics
기본자료저록  
Dissertations Abstracts International. 87-03B.
전자적 위치 및 접속  
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MARC

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■1001  ▼aParhizkar,  Alireza.▼0(orcid)0000-0003-2418-7888
■24512▼aA  Field  Theory  of  Localization
■260    ▼a[Sl]▼bUniversity  of  Maryland,  College  Park▼c2025
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a307  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-03,  Section:  B.
■500    ▼aAdvisor:  Galitski,  Victor.
■5021  ▼aThesis  (Ph.D.)--University  of  Maryland,  College  Park,  2025.
■520    ▼aIn  general  wave-functions  spread  and  propagate.  However,  there  are  certain  situations  where  they  cease  to  do  so.  Those  situations  are  equivalently  interpreted  as  frozen  or  localized  quantum  particles.  In  the  context  of  condensed  matter  physics,  this  localization---the  vanishing  of  the  group  velocity  for  a  large  class  of  states---is  related  to  the  appearance  of  flat  bands  in  the  band  structure  of  a  quantum  system.  The  flat  bands  are  important  occurrences  for  multiple  reasons,  one  of  them  being  that  on  a  flat  band  the  kinematics  of  a  system  is  non-existent  and  therefore  the  physics  is  completely  governed  by  the  interaction  terms  which  are  responsible  for  many  exotic  states  of  matter.  Therefore,  one  expects  that  a  flat  band  is  a  bedrock  for  finding  exotic  states.  The  appearance  of  flat  bands  is  also,  at  times,  a  puzzling  phenomenon.  For  example,  the  recurrent  flat  bands  in  twisted  bilayer  graphene  for  different  twist  angles  are  not  yet  completely  understood,  even  at  the  single  particle  level,  and  they  are  surprising  enough  that  the  angles  at  which  they  appear  are  called  ``magic''  angles.  Here,  the  field  theoretic  approach  to  these  interesting  phenomena  is  presented.
■590    ▼aSchool  code:  0117.
■650  4▼aPhysics
■650  4▼aCondensed  matter  physics
■650  4▼aTheoretical  physics
■653    ▼aAnomalies
■653    ▼aBilayer  systems
■653    ▼aFlat  bands
■653    ▼aLocalization
■653    ▼aQuantum  field  theory
■653    ▼aStrongly  correlated  electrons
■690    ▼a0605
■690    ▼a0611
■690    ▼a0753
■71020▼aUniversity  of  Maryland,  College  Park▼bPhysics.
■7730  ▼tDissertations  Abstracts  International▼g87-03B.
■790    ▼a0117
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17358955▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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