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Beyond Li-Haldane Counting: A Close Look at Chiral Topological Order in the Entanglement Spectra of (2+1)-Dimensional Spin Liquid Ground States, with a Focus on PEPS- [electronic resource]
Beyond Li-Haldane Counting: A Close Look at Chiral Topological Order in the Entanglement S...
Beyond Li-Haldane Counting: A Close Look at Chiral Topological Order in the Entanglement Spectra of (2+1)-Dimensional Spin Liquid Ground States, with a Focus on PEPS- [electronic resource]

Detailed Information

자료유형  
 학위논문파일 국외
최종처리일시  
20240214101235
ISBN  
9798380158466
DDC  
530
저자명  
Arildsen, Mark Jesse.
서명/저자  
Beyond Li-Haldane Counting: A Close Look at Chiral Topological Order in the Entanglement Spectra of (2+1)-Dimensional Spin Liquid Ground States, with a Focus on PEPS - [electronic resource]
발행사항  
[S.l.]: : University of California, Santa Barbara., 2023
발행사항  
Ann Arbor : : ProQuest Dissertations & Theses,, 2023
형태사항  
1 online resource(202 p.)
주기사항  
Source: Dissertations Abstracts International, Volume: 85-02, Section: B.
주기사항  
Advisor: Ludwig, Andreas W. W.
학위논문주기  
Thesis (Ph.D.)--University of California, Santa Barbara, 2023.
사용제한주기  
This item must not be sold to any third party vendors.
초록/해제  
요약The entanglement spectrum (ES) has been a successful tool for the exploration of (2+1)-dimensional chiral topological states, through Li and Haldane's method of counting degeneracies in the low-lying ES characteristic of an underlying conformal field theory (CFT). We develop an quantitative understanding of the splitting of these degeneracies in the real space ES, at fixed momentum, that occurs at finite size, based on a Generalized Gibbs Ensemble (GGE) of local conservation laws that arise directly from, and are thus controlled by, the chiral CFT. These conservation laws come from viewing the conformal boundary state description of the ES as a quantum quench. We apply this by computing such conservation laws for chiral SU(2)-level-one and -level-two, and later chiral SU(3)-level-one, Wess-Zumino-Witten CFTs, and successfully matching these with numerically calculated entanglement spectra for corresponding chiral spin liquid states, including PEPS.For the chiral SU(2)-level-two case, we find that essential to the GGE are local integrals of operators of fractional dimension, as proposed by Cardy in Ref. [2]. One such operator, G(x), has lower conformal dimension than the energy-momentum tensor, T(x), and we discuss possible consequences of this. Meanwhile in the chiral SU(3)-level-one case, we find that integrals of odd-dimensional operators are available from the CFT, which are the only ones that can be responsible for breaking the degeneracy of SU(3) conjugates, but they are excluded from the GGE by discrete symmetries, for a chiral state. This prediction of conjugate degeneracy in the chiral SU(3)-level-one spin liquid state is backed by the numerical ES to which we match our chiral SU(3)-level-one ensemble of conservation laws.Along the way, we develop a "doubled" SU(3)-level-one theory to fully explain the low-lying entanglement spectrum of an SU(3) spin liquid PEPS that strongly breaks time-reversal symmetry and possesses chiral SU(3)-level-one Li-Haldane counting in some ES sectors, but not others. This clarifies the non-chirality of that state. We then use the PEPS's sectors which exhibit Li-Haldane state counting of a chiral state, but which do exhibit breaking of the degeneracy of SU(3) conjugates, to exhibit a clear contrast with the chiral SU(3)-level-one spin liquid state we previously examined, and demonstrate the utility of broken conjugate degeneracy as a diagnostic of the absence of chirality.
일반주제명  
Condensed matter physics.
일반주제명  
Quantum physics.
일반주제명  
Statistical physics.
키워드  
Conformal field theory
키워드  
Projected Entangled Pair States
키워드  
Quantum entanglement
키워드  
Quantum spin liquid
키워드  
Quantum statistical mechanics
키워드  
Topological order
기타저자  
University of California, Santa Barbara Physics
기본자료저록  
Dissertations Abstracts International. 85-02B.
기본자료저록  
Dissertation Abstract International
전자적 위치 및 접속  
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MARC

 008240612s2023      us  |||||||||||||||c||eng  d
■001000016933348
■00520240214101235
■006m          o    d                
■007cr#unu||||||||
■020    ▼a9798380158466
■035    ▼a(MiAaPQ)AAI30527917
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a530
■1001  ▼aArildsen,  Mark  Jesse.
■24510▼aBeyond  Li-Haldane  Counting:  A  Close  Look  at  Chiral  Topological  Order  in  the  Entanglement  Spectra  of  (2+1)-Dimensional  Spin  Liquid  Ground  States,  with  a  Focus  on  PEPS▼h[electronic  resource]
■260    ▼a[S.l.]:▼bUniversity  of  California,  Santa  Barbara.  ▼c2023
■260  1▼aAnn  Arbor  :▼bProQuest  Dissertations  &  Theses,  ▼c2023
■300    ▼a1  online  resource(202  p.)
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  85-02,  Section:  B.
■500    ▼aAdvisor:  Ludwig,  Andreas  W.  W.
■5021  ▼aThesis  (Ph.D.)--University  of  California,  Santa  Barbara,  2023.
■506    ▼aThis  item  must  not  be  sold  to  any  third  party  vendors.
■520    ▼aThe  entanglement  spectrum  (ES)  has  been  a  successful  tool  for  the  exploration  of  (2+1)-dimensional  chiral  topological  states,  through  Li  and  Haldane's  method  of  counting  degeneracies  in  the  low-lying  ES  characteristic  of  an  underlying  conformal  field  theory  (CFT).  We  develop  an  quantitative  understanding  of  the  splitting  of  these  degeneracies  in  the  real  space  ES,  at  fixed  momentum,  that  occurs  at  finite  size,  based  on  a  Generalized  Gibbs  Ensemble  (GGE)  of  local  conservation  laws  that  arise  directly  from,  and  are  thus  controlled  by,  the  chiral  CFT.  These  conservation  laws  come  from  viewing  the  conformal  boundary  state  description  of  the  ES  as  a  quantum  quench.  We  apply  this  by  computing  such  conservation  laws  for  chiral  SU(2)-level-one  and  -level-two,  and  later  chiral  SU(3)-level-one,  Wess-Zumino-Witten  CFTs,  and  successfully  matching  these  with  numerically  calculated  entanglement  spectra  for  corresponding  chiral  spin  liquid  states,  including  PEPS.For  the  chiral  SU(2)-level-two  case,  we  find  that  essential  to  the  GGE  are  local  integrals  of  operators  of  fractional  dimension,  as  proposed  by  Cardy  in  Ref.  [2].  One  such  operator,  G(x),  has  lower  conformal  dimension  than  the  energy-momentum  tensor,  T(x),  and  we  discuss  possible  consequences  of  this.  Meanwhile  in  the  chiral  SU(3)-level-one  case,  we  find  that  integrals  of  odd-dimensional  operators  are  available  from  the  CFT,  which  are  the  only  ones  that  can  be  responsible  for  breaking  the  degeneracy  of  SU(3)  conjugates,  but  they  are  excluded  from  the  GGE  by  discrete  symmetries,  for  a  chiral  state.  This  prediction  of  conjugate  degeneracy  in  the  chiral  SU(3)-level-one  spin  liquid  state  is  backed  by  the  numerical  ES  to  which  we  match  our  chiral  SU(3)-level-one  ensemble  of  conservation  laws.Along  the  way,  we  develop  a  "doubled"  SU(3)-level-one  theory  to  fully  explain  the  low-lying  entanglement  spectrum  of  an  SU(3)  spin  liquid  PEPS  that  strongly  breaks  time-reversal  symmetry  and  possesses  chiral  SU(3)-level-one  Li-Haldane  counting  in  some  ES  sectors,  but  not  others.  This  clarifies  the  non-chirality  of  that  state.  We  then  use  the  PEPS's  sectors  which  exhibit  Li-Haldane  state  counting  of  a  chiral  state,  but  which  do  exhibit  breaking  of  the  degeneracy  of  SU(3)  conjugates,  to  exhibit  a  clear  contrast  with  the  chiral  SU(3)-level-one  spin  liquid  state  we  previously  examined,  and  demonstrate  the  utility  of  broken  conjugate  degeneracy  as  a  diagnostic  of  the  absence  of  chirality.
■590    ▼aSchool  code:  0035.
■650  4▼aCondensed  matter  physics.
■650  4▼aQuantum  physics.
■650  4▼aStatistical  physics.
■653    ▼aConformal  field  theory
■653    ▼aProjected  Entangled  Pair  States
■653    ▼aQuantum  entanglement
■653    ▼aQuantum  spin  liquid
■653    ▼aQuantum  statistical  mechanics
■653    ▼aTopological  order
■690    ▼a0611
■690    ▼a0599
■690    ▼a0217
■71020▼aUniversity  of  California,  Santa  Barbara▼bPhysics.
■7730  ▼tDissertations  Abstracts  International▼g85-02B.
■773    ▼tDissertation  Abstract  International
■790    ▼a0035
■791    ▼aPh.D.
■792    ▼a2023
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T16933348▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.
■980    ▼a202402▼f2024

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