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Mesons in a soft-wall AdS-Schwarzschild approach at low temperature

机译:低温下采用软壁AdS-Schwarzschild方法的介子

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We derive a holographic soft-wall approach in five dimensional AdS-Schwarzschild space for the description of mesons at finite temperature. In this first application we consider the small temperature limit and derive analytical expression for the mass spectrum of mesons with adjustable quantum numbers n (radial number), L (angular orbital momentum) and J (total angular momentum). We explicitly separate the contribution at zero temperature and the leading order temperature correction. The temperature corrections arise from the temperature dependence of the dilaton parameter (which is the parameter of spontaneous breaking of chiral symmetry related to the pseudoscalar meson decay constant) and the warping of the AdS metric due to temperature. We extend our results to any hadron with integer spin (tetraquarks, dibaryons, etc.). We present numerical analysis for the temperature dependence of meson masses and form factors.
机译:我们导出了五维AdS-Schwarzschild空间中的全息软壁方法,用于描述有限温度下的介子。在第一个应用中,我们考虑了较小的温度极限,并推导了具有可调量子数n(径向数),L(角轨道动量)和J(总角动量)的介子质谱的解析表达式。我们明确地将零温度下的影响和前端温度校正分开。温度校正源自dilaton参数(与伪标量介子衰变常数相关的手性对称性的自发破坏的参数)的温度依赖性以及由于温度引起的AdS度量的扭曲。我们将结果扩展到具有整数自旋(四夸克,双重子等)的任何强子。我们对介子质量和形状因数的温度依赖性进行数值分析。

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