Finite temperature one-point functions in non-diagonal integrable field theories: the sine-Gordon model

Finite temperature one-point functions in non-diagonal integrable field theories: the sine-Gordon model
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非对角可积场论中的有限温度单点函数:正弦戈登模型

DOI:
10.1007/jhep03(2014)026
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发表时间:
2013
影响因子:
5.4
通讯作者:
G. Takács
G. Takács
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
F. Buccheri;G. Takács

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摘要我们研究了正弦戈登模型中指数场的有限温度期望值。使用有限体积正则化,我们根据连接的对角矩阵元素给出这些量的低温展开,为此我们提供了显式公式。对于指数的特殊值,可以使用其他方法进行计算并用于验证我们的发现。我们的结果也可以解释为对先前关于有限体积和无限体积形状因子之间的联系的猜想的进一步支持,该猜想在体积中呈指数衰减的项下有效。
A bstractWe study the finite-temperature expectation values of exponential fields in the sine-Gordon model. Using finite-volume regularization, we give a low-temperature expansion of such quantities in terms of the connected diagonal matrix elements, for which we provide explicit formulas. For special values of the exponent, computations by other methods are available and used to validate our findings. Our results can also be interpreted as a further support for a previous conjecture about the connection between finite- and infinite-volume form factors valid up to terms exponentially decaying in the volume.
量子淬灭后伊辛场论中的动力学
DOI: 10.1088/1742-5468/2012/04/p04017
发表时间: 2012
期刊: Journal of Statistical Mechanics: Theory and Experiment
影响因子: --
作者:
D Schuricht;F H L Essler
通讯作者: F H L Essler