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Some Aspects of Massive Higher Spin Particles.
Some Aspects of Massive Higher Spin Particles.
상세정보
- 자료유형
- 학위논문
- Control Number
- 0017162388
- International Standard Book Number
- 9798382826448
- Dewey Decimal Classification Number
- 530.1
- Main Entry-Personal Name
- Lindwasser, Lukas William.
- Publication, Distribution, etc. (Imprint
- [S.l.] : University of California, Los Angeles., 2024
- Publication, Distribution, etc. (Imprint
- Ann Arbor : ProQuest Dissertations & Theses, 2024
- Physical Description
- 145 p.
- General Note
- Source: Dissertations Abstracts International, Volume: 85-12, Section: B.
- General Note
- Advisor: Tomboulis, E. T.
- Dissertation Note
- Thesis (Ph.D.)--University of California, Los Angeles, 2024.
- Summary, Etc.
- 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.
- Subject Added Entry-Topical Term
- Theoretical physics.
- Subject Added Entry-Topical Term
- Physics.
- Subject Added Entry-Topical Term
- Applied mathematics.
- Subject Added Entry-Topical Term
- Particle physics.
- Subject Added Entry-Topical Term
- Computational physics.
- Index Term-Uncontrolled
- Virasoro amplitudes
- Index Term-Uncontrolled
- Spinor Lorentz multiplets
- Index Term-Uncontrolled
- Goldstone boson
- Index Term-Uncontrolled
- Gegenbauer polynomials
- Index Term-Uncontrolled
- Massive particles
- Added Entry-Corporate Name
- University of California, Los Angeles Physics 0666
- Host Item Entry
- Dissertations Abstracts International. 85-12B.
- Electronic Location and Access
- 로그인을 한후 보실 수 있는 자료입니다.
- Control Number
- joongbu:658464
MARC
008250224s2024 us ||||||||||||||c||eng d■001000017162388
■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[S.l.]▼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.
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