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arXiv · 2109.13372

Critical Coupling for Two-dimensional $ϕ^4$ Theory in Discretized Light-Cone Quantization

James P. Vary·Mengyao Huang·Shreeram Jawadekar·Mamoon Sharaf·Avaroth Harindranath·Dipankar Chakrabarti
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Abstract

We solve for the critical coupling in the symmetric phase of two-dimensional $ϕ^4$ field theory using Discretized Light-Cone Quantization. We adopt periodic boundary conditions, neglect the zero mode, and obtain a critical coupling consistent with the critical coupling reported using conformal truncation in light-front quantization. We find a 17% dfference from the critical coupling reported with light-front quantization in a symmetric polynomial basis.

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James P. Vary, Mengyao Huang, Shreeram Jawadekar, Mamoon Sharaf, Avaroth Harindranath, Dipankar Chakrabarti. 2022-02-03. Critical Coupling for Two-dimensional $ϕ^4$ Theory in Discretized Light-Cone Quantization. https://doi.org/10.1103/physrevd.105.016020

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