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arXiv · 2301.04686

Non-Lorentzian Ka\v{c}-Moody Algebras

Arjun Bagchi·Ritankar Chatterjee·Rishabh Kaushik·Amartya Saha·Debmalya Sarkar
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Abstract

We investigate two dimensional (2d) quantum field theories which exhibit Non- Lorentzian Ka\v{c}-Moody (NLKM) algebras as their underlying symmetry. Our investigations encompass both 2d Galilean (speed of light $c \rightarrow \infty$) and Carrollian ($c \rightarrow 0$) CFTs with additional number of infinite non-Abelian currents, stemming from an isomorphism between the two algebras. We alternate between an intrinsic and a limiting analysis. Our NLKM algebra is constructed first through a contraction and then derived from an intrinsically Carrollian perspective. We then go on to use the symmetries to derive a Non-Lorentzian (NL) Sugawara construction and ultimately write down the NL equivalent of the Knizhnik Zamolodchikov equations. All of these are also derived from contractions, thus providing a robust cross-check of our analyses.

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Arjun Bagchi, Ritankar Chatterjee, Rishabh Kaushik, Amartya Saha, Debmalya Sarkar. 2023-01-11. Non-Lorentzian Ka\v{c}-Moody Algebras. https://doi.org/10.1007/jhep03(2023)041

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