Critical coupling in (1+1)-dimensional light-front φ4 theory

Kazuto Oshima; Masanobu Yahiro

doi:10.1143/PTP.101.459

Critical coupling in (1+1)-dimensional light-front φ⁴ theory

Kazuto Oshima, Masanobu Yahiro

Research output: Contribution to journal › Article › peer-review

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Abstract

Spontaneous symmetry breaking in (1+1)-dimensional φ⁴ theory is studied with discretized light-front quantization. The critical coupling evaluated from the first few terms in the ℏ expansion of the commutation relations [a₀, a_n] is 28.8μ²/ℏ ≤ λ_cr ≤ 31.1μ²/ℏ, consistent with the equal-time value, 22μ²/ℏ ≤ λ_cr ≤ 55.5μ²/ℏ.

Original language	English
Pages (from-to)	459-465
Number of pages	7
Journal	Progress of Theoretical Physics
Volume	101
Issue number	2
DOIs	https://doi.org/10.1143/PTP.101.459
Publication status	Published - Feb 1999
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1143/PTP.101.459

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title = "Critical coupling in (1+1)-dimensional light-front φ4 theory",

abstract = "Spontaneous symmetry breaking in (1+1)-dimensional φ4 theory is studied with discretized light-front quantization. The critical coupling evaluated from the first few terms in the ℏ expansion of the commutation relations [a0, an] is 28.8μ2/ℏ ≤ λcr ≤ 31.1μ2/ℏ, consistent with the equal-time value, 22μ2/ℏ ≤ λcr ≤ 55.5μ2/ℏ.",

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AB - Spontaneous symmetry breaking in (1+1)-dimensional φ4 theory is studied with discretized light-front quantization. The critical coupling evaluated from the first few terms in the ℏ expansion of the commutation relations [a0, an] is 28.8μ2/ℏ ≤ λcr ≤ 31.1μ2/ℏ, consistent with the equal-time value, 22μ2/ℏ ≤ λcr ≤ 55.5μ2/ℏ.

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Critical coupling in (1+1)-dimensional light-front φ⁴ theory

Abstract

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