From fundamental strings to small black holes
From fundamental strings to small black holes
复制标题
从基本弦到小黑洞
DOI：
--
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
P. Vieira
中科院分区：
文献类型：
--
作者：
L. Cornalba;M. Costa;J. Penedones;P. Vieira
我们给出的证据有利于一个字符串/黑洞过渡的情况下，BPS基本弦状态的杂合弦。我们的分析超出了自由度的计算，并考虑了该过程中动力学量的演变。随着耦合的增加，弦态的大小减小到小黑洞形成时的弦尺度。我们计算了几个场在黑洞相和微扰弦相中的吸收截面。在零频率下，这些截面可以看作是跃迁的序参量。特别是，对于固定在视界的标量，当黑洞形成时，横截面演化为零。
We give evidence in favour of a string/black hole transition in the case of BPS fundamental string states of the Heterotic string. Our analysis goes beyond the counting of degrees of freedom and considers the evolution of dynamical quantities in the process. As the coupling increases, the string states decrease their size up to the string scale when a small black hole is formed. We compute the absorption cross section for several fields in both the black hole and the perturbative string phases. At zero frequency, these cross sections can be seen as order parameters for the transition. In particular, for the scalars fixed at the horizon the cross section evolves to zero when the black hole is formed.