2 + 1时空中Bondi-Metzner-Sachs对称的粒子实现

IF 5 1区物理与天体物理 Q1 PHYSICS, PARTICLES & FIELDS

Journal of High Energy Physics Pub Date : 2023-11-02 DOI:10.1007/jhep11(2023)011

Carles Batlle, Víctor Campello, Joaquim Gomis

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引用次数: 0

摘要

利用非线性实现框架，构造了(2+1)时空中包含Bondi-Metzner-Sachs (BMS)平移(超平移)的扩大对称集的Lorentz不变大质量粒子模型。构造了所得拉格朗日量的哈密顿形式，分析了无限相空间约束和规范变换集。我们还计算了该理论在相空间中的无质量极限。在消除规范自由度后，物理简化空间只剩下标准庞卡罗粒子的自由度，但还有一组我们证明为BMS的剩余对称性。对于无质量极限，包括在这种情况下的超旋转，也指出了类似的结果。

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Particle realization of Bondi-Metzner-Sachs symmetry in 2 + 1 space-time

A bstract We construct a Lorentz invariant massive particle model in (2+1) space-time with an enlarged set of symmetries which includes Bondi-Metzner-Sachs (BMS) translations (supertranslations), using the non-linear realization framework. The Hamiltonian formalism for the resulting Lagrangian is constructed, and the infinite phase-space constraints and the set of gauge transformations are analysed. We also compute the massless limit of the theory in phase-space. After eliminating the gauge degrees of freedom, the physical reduced space is left only with the degrees of freedom of a standard Poincaré particle but with a residual set of symmetries that we prove to be BMS. A similar result for the massless limit, including in this case superrotations, is pointed out.

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来源期刊

Journal of High Energy Physics PHYSICS, PARTICLES & FIELDS-

CiteScore

10.00

自引率

46.30%

发文量

2107

审稿时长

12 weeks

期刊介绍： The aim of the Journal of High Energy Physics (JHEP) is to ensure fast and efficient online publication tools to the scientific community, while keeping that community in charge of every aspect of the peer-review and publication process in order to ensure the highest quality standards in the journal. Consequently, the Advisory and Editorial Boards, composed of distinguished, active scientists in the field, jointly establish with the Scientific Director the journal''s scientific policy and ensure the scientific quality of accepted articles. JHEP presently encompasses the following areas of theoretical and experimental physics: Collider Physics Underground and Large Array Physics Quantum Field Theory Gauge Field Theories Symmetries String and Brane Theory General Relativity and Gravitation Supersymmetry Mathematical Methods of Physics Mostly Solvable Models Astroparticles Statistical Field Theories Mostly Weak Interactions Mostly Strong Interactions Quantum Field Theory (phenomenology) Strings and Branes Phenomenological Aspects of Supersymmetry Mostly Strong Interactions (phenomenology).