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Heat Death of an Ultracold Dipolar Gas
Heat Death of an Ultracold Dipolar Gas
Heat Death of an Ultracold Dipolar Gas

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20250211151055
ISBN  
9798382717005
DDC  
530.1
저자명  
Wang, Reuben R. W.
서명/저자  
Heat Death of an Ultracold Dipolar Gas
발행사항  
[Sl] : University of Colorado at Boulder, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
164 p
주기사항  
Source: Dissertations Abstracts International, Volume: 85-11, Section: B.
주기사항  
Advisor: Bohn, John L.
학위논문주기  
Thesis (Ph.D.)--University of Colorado at Boulder, 2024.
초록/해제  
요약Optically trapping bulk gases of atoms and molecules at sub-microKelvin temperatures has become commonplace in several labs around the world. In particular, realizing low temperature samples of dipolar atoms and diatomic molecules has garnered great interest from the ultracold community, due to their long-range and anisotropic nature. At temperatures not yet low enough to achieve macroscopic quantum degeneracy, the gas constituents move about more or less classically, but experience collisions that can only be described accurately with quantum mechanics. By aligning these dipoles with an external field, collisions inherit highly anisotropic cross sections from their dipole-dipole interactions, leading to a wealth of tunable anisotropic collective dynamics. I focus on characterizing anisotropic thermalization dynamics, which bears importance in many experimental applications. In fact, progressing in parallel with my graduate work has been exciting experiments with ultracold dipolar atoms and molecules. I tell the story of several collaborations in which my work was used to determine the scattering length of erbium atoms, characterize universal dipolar scattering, and open opportunities for optimal evaporative cooling of molecular gases. This thesis lays out the development of several theoretical tools for investigating the relaxation of a nondegenerate dipolar gas, tracking its intricate journey to an eventual heat death.
일반주제명  
Theoretical physics
일반주제명  
Atomic physics
일반주제명  
Molecular physics
일반주제명  
Physics
일반주제명  
Quantum physics
일반주제명  
Mechanics
키워드  
Collective physics
키워드  
Dipolar gases
키워드  
Hydrodynamics
키워드  
Monte Carlo simulations
키워드  
Quantum scattering
키워드  
Ultracold gases
기타저자  
University of Colorado at Boulder Physics
기본자료저록  
Dissertations Abstracts International. 85-11B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■1001  ▼aWang,  Reuben  R.  W.▼0(orcid)0000-0002-1069-9746
■24510▼aHeat  Death  of  an  Ultracold  Dipolar  Gas
■260    ▼a[Sl]▼bUniversity  of  Colorado  at  Boulder▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a164  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  85-11,  Section:  B.
■500    ▼aAdvisor:  Bohn,  John  L.
■5021  ▼aThesis  (Ph.D.)--University  of  Colorado  at  Boulder,  2024.
■520    ▼aOptically  trapping  bulk  gases  of  atoms  and  molecules  at  sub-microKelvin  temperatures  has  become  commonplace  in  several  labs  around  the  world.  In  particular,  realizing  low  temperature  samples  of  dipolar  atoms  and  diatomic  molecules  has  garnered  great  interest  from  the  ultracold  community,  due  to  their  long-range  and  anisotropic  nature.  At  temperatures  not  yet  low  enough  to  achieve  macroscopic  quantum  degeneracy,  the  gas  constituents  move  about  more  or  less  classically,  but  experience  collisions  that  can  only  be  described  accurately  with  quantum  mechanics.  By  aligning  these  dipoles  with  an  external  field,  collisions  inherit  highly  anisotropic  cross  sections  from  their  dipole-dipole  interactions,  leading  to  a  wealth  of  tunable  anisotropic  collective  dynamics.  I  focus  on  characterizing  anisotropic  thermalization  dynamics,  which  bears  importance  in  many  experimental  applications.    In  fact,  progressing  in  parallel  with  my  graduate  work  has  been  exciting  experiments  with  ultracold  dipolar  atoms  and  molecules.  I  tell  the  story  of  several  collaborations  in  which  my  work  was  used  to  determine  the  scattering  length  of  erbium  atoms,  characterize  universal  dipolar  scattering,  and  open  opportunities  for  optimal  evaporative  cooling  of  molecular  gases.  This  thesis  lays  out  the  development  of  several  theoretical  tools  for  investigating  the  relaxation  of  a  nondegenerate  dipolar  gas,  tracking  its  intricate  journey  to  an  eventual  heat  death.
■590    ▼aSchool  code:  0051.
■650  4▼aTheoretical  physics
■650  4▼aAtomic  physics
■650  4▼aMolecular  physics
■650  4▼aPhysics
■650  4▼aQuantum  physics
■650  4▼aMechanics
■653    ▼aCollective  physics
■653    ▼aDipolar  gases
■653    ▼aHydrodynamics
■653    ▼aMonte  Carlo  simulations
■653    ▼aQuantum  scattering
■653    ▼aUltracold  gases
■690    ▼a0753
■690    ▼a0748
■690    ▼a0609
■690    ▼a0599
■690    ▼a0346
■690    ▼a0605
■71020▼aUniversity  of  Colorado  at  Boulder▼bPhysics.
■7730  ▼tDissertations  Abstracts  International▼g85-11B.
■790    ▼a0051
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17160648▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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