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Distributional Stress-Energy in General Relativity and Its Implications for Quantum Gravity
Distributional Stress-Energy in General Relativity and Its Implications for Quantum Gravit...
Distributional Stress-Energy in General Relativity and Its Implications for Quantum Gravity

Detailed Information

자료유형  
 학위논문 서양
최종처리일시  
20250211152034
ISBN  
9798383739563
DDC  
530
저자명  
Mackewicz, Kristian.
서명/저자  
Distributional Stress-Energy in General Relativity and Its Implications for Quantum Gravity
발행사항  
[Sl] : The University of Chicago, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
94 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-02, Section: B.
주기사항  
Advisor: Hogan, Craig.
학위논문주기  
Thesis (Ph.D.)--The University of Chicago, 2024.
초록/해제  
요약We review the current state of the art of techniques in general relativity involving null and/or distributional sources of stress-energy, with an emphasis on the study of gravitational shockwaves. We then propose a series of unsolved problems in which these techniques can be applied to uncover novel features of causal structure. In particular, we demonstrate methods in which the gravitational field due to quantum fluctuations can be modeled under the assumption that gravity is coherent over causal diamonds.The first example studied is the decay of a particle with mass M into two counter-propagating null point particles. The resulting spherical shockwave is shown to produce displacement and velocity memory on a system of spherically arranged, synchronized clocks. We then consider quantum superpositions of decay axes and demonstrate that fluctuations of time shifts measured on the system of clocks should scale like ⟨δτ2⟩/τ2 ∼ tp/τ in the limit of Planck mass particles.The second problem studied is the gravitational effect of a "bubble model" representing the effective stress-energy of a pion. It is shown that such a model produces a mean secular outward acceleration of nearby test bodies that is consistent with the relative acceleration of bodies due to the cosmological constant.
일반주제명  
Physics
일반주제명  
Astrophysics
일반주제명  
Quantum physics
일반주제명  
Theoretical physics
키워드  
Cosmological constant
키워드  
Cosmology
키워드  
Field theory
키워드  
General relativity
키워드  
Gravitational shockwaves
키워드  
Quantum fluctuations
기타저자  
The University of Chicago Physics
기본자료저록  
Dissertations Abstracts International. 86-02B.
전자적 위치 및 접속  
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■1001  ▼aMackewicz,  Kristian.▼0(orcid)0000-0001-8295-4788
■24510▼aDistributional  Stress-Energy  in  General  Relativity  and  Its  Implications  for  Quantum  Gravity
■260    ▼a[Sl]▼bThe  University  of  Chicago▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a94  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-02,  Section:  B.
■500    ▼aAdvisor:  Hogan,  Craig.
■5021  ▼aThesis  (Ph.D.)--The  University  of  Chicago,  2024.
■520    ▼aWe  review  the  current  state  of  the  art  of  techniques  in  general  relativity  involving  null  and/or  distributional  sources  of  stress-energy,  with  an  emphasis  on  the  study  of  gravitational  shockwaves.  We  then  propose  a  series  of  unsolved  problems  in  which  these  techniques  can  be  applied  to  uncover  novel  features  of  causal  structure.  In  particular,  we  demonstrate  methods  in  which  the  gravitational  field  due  to  quantum  fluctuations  can  be  modeled  under  the  assumption  that  gravity  is  coherent  over  causal  diamonds.The  first  example  studied  is  the  decay  of  a  particle  with  mass  M  into  two  counter-propagating  null  point  particles.  The  resulting  spherical  shockwave  is  shown  to  produce  displacement  and  velocity  memory  on  a  system  of  spherically  arranged,  synchronized  clocks.  We  then  consider  quantum  superpositions  of  decay  axes  and  demonstrate  that  fluctuations  of  time  shifts  measured  on  the  system  of  clocks  should  scale  like  ⟨δτ2⟩/τ2  ∼  tp/τ  in  the  limit  of  Planck  mass  particles.The  second  problem  studied  is  the  gravitational  effect  of  a  "bubble  model"  representing  the  effective  stress-energy  of  a  pion.  It  is  shown  that  such  a  model  produces  a  mean  secular  outward  acceleration  of  nearby  test  bodies  that  is  consistent  with  the  relative  acceleration  of  bodies  due  to  the  cosmological  constant.
■590    ▼aSchool  code:  0330.
■650  4▼aPhysics
■650  4▼aAstrophysics
■650  4▼aQuantum  physics
■650  4▼aTheoretical  physics
■653    ▼aCosmological  constant
■653    ▼aCosmology
■653    ▼aField  theory
■653    ▼aGeneral  relativity
■653    ▼aGravitational  shockwaves
■653    ▼aQuantum  fluctuations
■690    ▼a0605
■690    ▼a0753
■690    ▼a0599
■690    ▼a0596
■71020▼aThe  University  of  Chicago▼bPhysics.
■7730  ▼tDissertations  Abstracts  International▼g86-02B.
■790    ▼a0330
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17162624▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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