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Some Aspects of Massive Higher Spin Particles
Some Aspects of Massive Higher Spin Particles
상세정보
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20250211152006
- ISBN
- 9798382826448
- DDC
- 530.1
- 서명/저자
- Some Aspects of Massive Higher Spin Particles
- 발행사항
- [Sl] : University of California, Los Angeles, 2024
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- 형태사항
- 145 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 85-12, Section: B.
- 주기사항
- Advisor: Tomboulis, E. T.
- 학위논문주기
- Thesis (Ph.D.)--University of California, Los Angeles, 2024.
- 초록/해제
- 요약This dissertation is a synthesis of work completed during my Ph.D., loosely connected by the appearance of higher spin particles.In Chapter 2, we explicitly construct an affine generalization of the Dirac action employing infinite dimensional spinorial representations of the group. This implies that it is built from an infinite number of spinor Lorentz multiplets with all possible half integer spins. We introduce a systematic procedure for constructing GL(d, ℝ) and SL(d, ℝ) invariant interaction terms to obtain quite general interacting models. Such models have order operators whose expectation value can break affine symmetry to Poincare symmetry. This symmetry breaking pattern is known to exhibit a graviton as its Goldstone boson. We discuss possible interactions and mechanisms for this symmetry breaking to occur, which would provide a dynamical explanation of the Lorentzian signature of spacetime.In Chapter 3, we study consistent deformations of Veneziano and Virasoro amplitudes. Under some physical assumptions, we find that their spectra must satisfy an over-determined set of non-linear recursion relations. The recursion relation for the generalized Veneziano amplitudes can be solved analytically and yields a two-parameter family which includes the Veneziano amplitude, the one-parameter family of Coon amplitudes, and a larger two-parameter family of amplitudes with an infinite tower of spins at each mass level. In the generalized Virasoro case, the only consistent solution is the string spectrum.In Chapter 4, we construct a new formalism for free massive particles of any spin, including integers and half integers, in any spacetime dimension. Massive particles are realized in this formalism as "dimensionally reduced" massless particles. Explicit propagators are found for any spin and dimension, including the propagators for all auxiliary fields necessary in the formalism. For spin s = n, n + 1/2, the propagators may be expressed as degree n Gegenbauer polynomials, whose asymptotic n → ∞ properties are known. This enables one to take an appropriate classical limit for particles with classically relevant spin S ∼ ℏn ≫ ℏ without extrapolation, all while using dimensional regularization.
- 일반주제명
- Theoretical physics
- 일반주제명
- Physics
- 일반주제명
- Applied mathematics
- 일반주제명
- Particle physics
- 일반주제명
- Computational physics
- 키워드
- Goldstone boson
- 기타저자
- University of California, Los Angeles Physics 0666
- 기본자료저록
- Dissertations Abstracts International. 85-12B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■00520250211152006
■006m o d
■007cr#unu||||||||
■020 ▼a9798382826448
■035 ▼a(MiAaPQ)AAI31330624
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a530.1
■1001 ▼aLindwasser, Lukas William.
■24510▼aSome Aspects of Massive Higher Spin Particles
■260 ▼a[Sl]▼bUniversity of California, Los Angeles▼c2024
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2024
■300 ▼a145 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 85-12, Section: B.
■500 ▼aAdvisor: Tomboulis, E. T.
■5021 ▼aThesis (Ph.D.)--University of California, Los Angeles, 2024.
■520 ▼aThis dissertation is a synthesis of work completed during my Ph.D., loosely connected by the appearance of higher spin particles.In Chapter 2, we explicitly construct an affine generalization of the Dirac action employing infinite dimensional spinorial representations of the group. This implies that it is built from an infinite number of spinor Lorentz multiplets with all possible half integer spins. We introduce a systematic procedure for constructing GL(d, ℝ) and SL(d, ℝ) invariant interaction terms to obtain quite general interacting models. Such models have order operators whose expectation value can break affine symmetry to Poincare symmetry. This symmetry breaking pattern is known to exhibit a graviton as its Goldstone boson. We discuss possible interactions and mechanisms for this symmetry breaking to occur, which would provide a dynamical explanation of the Lorentzian signature of spacetime.In Chapter 3, we study consistent deformations of Veneziano and Virasoro amplitudes. Under some physical assumptions, we find that their spectra must satisfy an over-determined set of non-linear recursion relations. The recursion relation for the generalized Veneziano amplitudes can be solved analytically and yields a two-parameter family which includes the Veneziano amplitude, the one-parameter family of Coon amplitudes, and a larger two-parameter family of amplitudes with an infinite tower of spins at each mass level. In the generalized Virasoro case, the only consistent solution is the string spectrum.In Chapter 4, we construct a new formalism for free massive particles of any spin, including integers and half integers, in any spacetime dimension. Massive particles are realized in this formalism as "dimensionally reduced" massless particles. Explicit propagators are found for any spin and dimension, including the propagators for all auxiliary fields necessary in the formalism. For spin s = n, n + 1/2, the propagators may be expressed as degree n Gegenbauer polynomials, whose asymptotic n → ∞ properties are known. This enables one to take an appropriate classical limit for particles with classically relevant spin S ∼ ℏn ≫ ℏ without extrapolation, all while using dimensional regularization.
■590 ▼aSchool code: 0031.
■650 4▼aTheoretical physics
■650 4▼aPhysics
■650 4▼aApplied mathematics
■650 4▼aParticle physics
■650 4▼aComputational physics
■653 ▼aVirasoro amplitudes
■653 ▼aSpinor Lorentz multiplets
■653 ▼aGoldstone boson
■653 ▼aGegenbauer polynomials
■653 ▼aMassive particles
■690 ▼a0753
■690 ▼a0605
■690 ▼a0798
■690 ▼a0216
■690 ▼a0364
■71020▼aUniversity of California, Los Angeles▼bPhysics 0666.
■7730 ▼tDissertations Abstracts International▼g85-12B.
■790 ▼a0031
■791 ▼aPh.D.
■792 ▼a2024
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17162388▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.


