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Dissipative and Spin Effects in Classical Gravity from Quantum Scattering Amplitudes
Dissipative and Spin Effects in Classical Gravity from Quantum Scattering Amplitudes
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105637
- ISBN
- 9798265454270
- DDC
- 530.1
- 서명/저자
- Dissipative and Spin Effects in Classical Gravity from Quantum Scattering Amplitudes
- 발행사항
- [Sl] : University of California, Los Angeles, 2025
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2025
- 형태사항
- 213 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-06, Section: B.
- 주기사항
- Advisor: Bern, Zvi.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Los Angeles, 2025.
- 초록/해제
- 요약Quantum scattering amplitudes have proven to be a powerful tool in high-precision calculations of classical gravity; especially in the dynamics of gravitational waves. By considering a hierarchy of relevant length scales, extracting the classical limit of black hole scattering from the quantum field theory approach has successfully pushed the Post-Minkowskian expansion further and faster than ever. In this work, we will continue this program while focusing on dissipative and spin effects. We will also explore these effects for the case of general spinning bodies, reducing to the special case of black holes for comparisons. In Chapter 1, we calculate radiative corrections to classical two-body scattering in electrodynamics using the Kosower-Maybee-O'Connell (KMOC) formalism and Eikonal phase while comparing to traditional equations of motions techniques. Electrodynamics has long been an insightful toy model for gravity; the results of Chapter 1 helped inform the interpretation of high-energy limit divergences that persist in spite of considering non-conservative effects. In Chapter 2, we introduce spin by considering higher spin fields as an effective field theory (EFT) and calculate a formula directly relating the impulse and spin kick to the Eikonal phase. We limit ourselves to linear-in-spin corrections in order to better understand how the inclusion of spin complicates the calculation of scattering observables using the KMOC formalism. In Chapter 3, we generalize the linear-in-spin calculation to all orders in spin by only considering general properties of higher spin fields. In this more general case, we derive a formula relating observables to operators acting on the Eikonal phase valid to all orders in spin. We also observe interesting similarities between the impulse and spin kick calculations. For the both the linear-in-spin and all-orders-in-spin cases, we verified our derivation by comparing to known results from the worldline formalism and the stationary phase approximation. In Chapter 4, we consider spin-transition and absorptive effects in tandem. We account for spin transition and absorption by coupling fields of different spins and masses to massless scalars, photons and gravitons, creating a series of non-minimal couplings in our EFT Lagrangian. We then use KMOC and Kallen-Lehman propagators to calculate the absorptive impulse of various spin-transition channels. We observe an interesting symmetry and suppression, which we call Floor-Ceiling Symmetry and No-Floor suppression. We also observe that spin universality is maintained. We include an appendix to supplement arguments in the body of the Chapters that would otherwise obscure the main goal findings of the Chapters.
- 일반주제명
- Theoretical physics
- 일반주제명
- Quantum physics
- 일반주제명
- Astrophysics
- 키워드
- Black holes
- 키워드
- Gravity
- 키워드
- Electrodynamics
- 기타저자
- University of California, Los Angeles Physics 0666
- 기본자료저록
- Dissertations Abstracts International. 87-06B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520260202105637
■006m o d
■007cr#unu||||||||
■020 ▼a9798265454270
■035 ▼a(MiAaPQ)AAI32395116
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530.1
■1001 ▼aGatica, Juan Pablo.
■24510▼aDissipative and Spin Effects in Classical Gravity from Quantum Scattering Amplitudes
■260 ▼a[Sl]▼bUniversity of California, Los Angeles▼c2025
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2025
■300 ▼a213 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-06, Section: B.
■500 ▼aAdvisor: Bern, Zvi.
■5021 ▼aThesis (Ph.D.)--University of California, Los Angeles, 2025.
■520 ▼aQuantum scattering amplitudes have proven to be a powerful tool in high-precision calculations of classical gravity; especially in the dynamics of gravitational waves. By considering a hierarchy of relevant length scales, extracting the classical limit of black hole scattering from the quantum field theory approach has successfully pushed the Post-Minkowskian expansion further and faster than ever. In this work, we will continue this program while focusing on dissipative and spin effects. We will also explore these effects for the case of general spinning bodies, reducing to the special case of black holes for comparisons. In Chapter 1, we calculate radiative corrections to classical two-body scattering in electrodynamics using the Kosower-Maybee-O'Connell (KMOC) formalism and Eikonal phase while comparing to traditional equations of motions techniques. Electrodynamics has long been an insightful toy model for gravity; the results of Chapter 1 helped inform the interpretation of high-energy limit divergences that persist in spite of considering non-conservative effects. In Chapter 2, we introduce spin by considering higher spin fields as an effective field theory (EFT) and calculate a formula directly relating the impulse and spin kick to the Eikonal phase. We limit ourselves to linear-in-spin corrections in order to better understand how the inclusion of spin complicates the calculation of scattering observables using the KMOC formalism. In Chapter 3, we generalize the linear-in-spin calculation to all orders in spin by only considering general properties of higher spin fields. In this more general case, we derive a formula relating observables to operators acting on the Eikonal phase valid to all orders in spin. We also observe interesting similarities between the impulse and spin kick calculations. For the both the linear-in-spin and all-orders-in-spin cases, we verified our derivation by comparing to known results from the worldline formalism and the stationary phase approximation. In Chapter 4, we consider spin-transition and absorptive effects in tandem. We account for spin transition and absorption by coupling fields of different spins and masses to massless scalars, photons and gravitons, creating a series of non-minimal couplings in our EFT Lagrangian. We then use KMOC and Kallen-Lehman propagators to calculate the absorptive impulse of various spin-transition channels. We observe an interesting symmetry and suppression, which we call Floor-Ceiling Symmetry and No-Floor suppression. We also observe that spin universality is maintained. We include an appendix to supplement arguments in the body of the Chapters that would otherwise obscure the main goal findings of the Chapters.
■590 ▼aSchool code: 0031.
■650 4▼aTheoretical physics
■650 4▼aQuantum physics
■650 4▼aAstrophysics
■653 ▼aBlack holes
■653 ▼aGravity
■653 ▼aQuantum electrodynamics
■653 ▼aScattering amplitudes
■653 ▼aElectrodynamics
■690 ▼a0753
■690 ▼a0599
■690 ▼a0596
■71020▼aUniversity of California, Los Angeles▼bPhysics 0666.
■7730 ▼tDissertations Abstracts International▼g87-06B.
■790 ▼a0031
■791 ▼aPh.D.
■792 ▼a2025
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360913▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


