Green-Schwarz superstring on the lattice

Green-Schwarz superstring on the lattice
复制标题

晶格上的绿黑超弦

DOI:
10.1007/jhep07(2016)014
复制
发表时间:
2016
影响因子:
5.4
通讯作者:
E. Vescovi
E. Vescovi
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
V. Forini;L. Bianchi;M. S. Bianchi;B. Leder;E. Vescovi

文献摘要

参考文献

被引文献

相似文献

考虑了IIB型超弦规范固定的Green-Schwarz作用量的可能离散化。我们用它们来测量的行动,从中我们提取的尖点异常尺寸的planarSYM来自AdS/CFT,以及质量的两个AdS激发横向相关的零尖点经典弦的解决方案。我们使用一个RationalHybridMonteCarlo(RHMC)算法和两个Wilson类费米子离散化,其中一个保持了模型的全局SO(6)对称性。我们将我们的结果与不同值下的预期行为进行比较。对于这两个观测值,我们发现一个很好的协议大g,这是微扰制度的西格玛模型。对于较小的g值,动作的期望值表现出与二次发散的存在相容的偏差。在他们的非微扰减法的连续极限可以采取,并建议从AdS/CFT的非微扰预期的定性协议。此外,我们检测到一个阶段的费米子行列式,其起源,我们解释说,小g导致一个符号的问题不能通过标准的reweighting治疗。在两种不同的离散化中,观测值的连续外推在误差范围内一致,这强烈表明它们导致相同的连续极限。这里讨论的部分结果在[1]中给出。
We consider possible discretizations for a gauge-fixed Green-Schwarz action of Type IIB superstring. We use them for measuring the action, from which we extract the cusp anomalous dimension of planarSYM as derived from AdS/CFT, as well as the mass of the two AdS excitations transverse to the relevant null cusp classical string solution. We perform lattice simulations employing a Rational Hybrid Monte Carlo (RHMC) algorithm and two Wilson-like fermion discretizations, one of which preserves the global SO (6) symmetry the model. We compare our results with the expected behavior at various values of. For both the observables, we find a good agreement for large g, which is the perturbative regime of the sigma-model. For smaller values of g, the expectation value of the action exhibits a deviation compatible with the presence of quadratic divergences. After their non-perturbative subtraction the continuum limit can be taken, and suggests a qualitative agreement with the non-perturbative expectation from AdS/CFT. Furthermore, we detect a phase in the fermion determinant, whose origin we explain, that for small g leads to a sign problem not treatable via standard reweigthing. The continuum extrapolations of the observables in the two different discretizations agree within errors, which is strongly suggesting that they lead to the same continuum limit. Part of the results discussed here were presented earlier in [1].
DOI: --
发表时间: 2013
期刊:
影响因子: --
作者:
B. Basso;A. Sever;P. Vieira
通讯作者: P. Vieira
超对称晶格模拟的第一个结果
DOI: --
发表时间: 2008
期刊:
影响因子: --
作者:
S. Catterall
通讯作者: S. Catterall
AdS/CFT 可集成性回顾,第 II.1 章:经典 AdS5 × S5 字符串解决方案
DOI: 10.1007/s11005-011-0466-0
发表时间: 2010
影响因子: 1.2
作者:
A. Tseytlin
通讯作者: A. Tseytlin
AdS/CFT 可积性回顾,第 II.2 章:AdS5 × S5 中的量子串
DOI: 10.1007/s11005-011-0510-0
发表时间: 2010
影响因子: 1.2
作者:
Tristan McLoughlin
通讯作者: Tristan McLoughlin
二环 AdS5 × S5 超弦:测试渐近 Bethe ansatz 和有限尺寸修正
DOI: --
发表时间: 2010
期刊:
影响因子: --
作者:
S. Giombi;R. Ricci;R. Roiban;A. Tseytlin
通讯作者: A. Tseytlin