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arXiv · 2401.14873

Lessons from discrete light-cone quantization for physics at null infinity: Bosons in two dimensions

Glenn Barnich·Sucheta Majumdar·Simone Speziale·Wen-Di Tan
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Abstract

Motivated by issues in the context of asymptotically flat spacetimes at null infinity, we discuss in the simplest example of a massless scalar field in two dimensions several subtleties that arise when setting up the canonical formulation on a single or on two intersecting null hyperplanes with a special emphasis on the infinite-dimensional global and conformal symmetries and their canonical generators, the free data, a consistent treatment of zero modes, matching conditions, and implications for quantization of massless versus massive fields.

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Glenn Barnich, Sucheta Majumdar, Simone Speziale, Wen-Di Tan. 2024-01-26. Lessons from discrete light-cone quantization for physics at null infinity: Bosons in two dimensions. https://arxiv.org/abs/2401.14873

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