Lorentzian 2D CFT from the pAQFT Perspective

Lorentzian 2D CFT from the pAQFT Perspective
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pAQFT 视角的洛伦兹二维 CFT

DOI:
10.1007/s00023-022-01167-z
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发表时间:
2022
期刊:
Annales Henri Poincaré
影响因子:
--
通讯作者:
Crawford S
Crawford S
中科院分区:
--
文献类型:
--
作者:
Crawford S

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在微扰代数量子场论的框架下,我们给出了二维整体双曲(特别是洛伦兹)流形上无质量标量场的量子理论的详细构造。由此,我们得到了与爱因斯坦柱面上的Heisenberg代数和Virasoro代数同构的可观测的子代数。我们还展示了一般协方差的共形形式,如Pinamonti首先引入的,作为Brunetti,Fredagen和Verch的构造的扩展,如何应用于自然拉格朗日,它允许人们在多个时空中一致地指定一个理论,以便获得经典动力学的共形协方差的简单条件,然后在二次拉格朗日的情况下证明它是量子化的。然后,我们比较了经典理论和量子理论中应力-能量张量的协方差条件,以得到一个涉及新坐标的Schwarzian导数的变换定律,这与欧几里得文献中的一个著名结果一致。
We provide a detailed construction of the quantum theory of the massless scalar field on two-dimensional, globally hyperbolic (in particular, Lorentzian) manifolds using the framework of perturbative algebraic quantum field theory. From this we obtain subalgebras of observables isomorphic to the Heisenberg and Virasoro algebras on the Einstein cylinder. We also show how the conformal version of general covariance, as first introduced by Pinamonti as an extension of the construction due to Brunetti, Fredenhagen and Verch, may be applied tonatural Lagrangians, which allow one to specify a theory consistently across multiple spacetimes, in order to obtain a simple condition for the conformal covariance of classical dynamics, which is then shown to quantise in the case of a quadratic Lagrangian. We then compare the covariance condition for the stress-energy tensor in the classical and quantum theory in order to obtain a transformation law involving the Schwarzian derivative of the new coordinate, in accordance with a well-known result in the Euclidean literature.
DOI: --
发表时间: 1996
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