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arXiv 1503.00896hep-thcond-mat.stat-mechmath-phmath.MP
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用BPHZ方法计算Lorentz破坏的无质量标量场理论的全圈阶临界指数

All-loop order critical exponents for massless scalar field theory with Lorentz violation in the BPHZ method

Paulo R. S. Carvalho

摘要:

本文解析计算了无质量热洛伦兹破坏O($N$)自作用$λϕ^{4}$标量场理论的全圈级临界指数。为此,我们评估,首先明确到下一个领先的顺序,后来在任何循环水平的归纳证明,各自的$β$ -功能和异常尺寸的理论重整在无质量的BPHZ方法,其中需要一套减少的费曼图计算。我们研究了洛伦兹破坏对临界指数结果的影响,并给出了相应的数学解释和物理解释。

英文摘要:

We compute analytically the all-loop level critical exponents for a massless thermal Lorentz-violating O($N$) self-interacting $λϕ^{4}$ scalar field theory. For that, we evaluate, firstly explicitly up to next-to-leading order and later in a proof by induction up to any loop level, the respective $β$-function and anomalous dimensions in a theory renormalized in the massless BPHZ method, where a reduced set of Feynman diagrams to be calculated is needed. We investigate the effect of the Lorentz violation in the outcome for the critical exponents and present the corresponding mathematical explanation and physical interpretation.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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