Complete Hamiltonian analysis of cosmological perturbations at all orders II: non-canonical scalar field

Complete Hamiltonian analysis of cosmological perturbations at all orders II: non-canonical scalar field
复制标题

所有阶宇宙扰动的完整哈密顿分析 II:非正则标量场

DOI:
--
复制
发表时间:
2016
期刊:
影响因子:
--
通讯作者:
S. Shankaranarayanan
S. Shankaranarayanan
中科院分区:
--
文献类型:
--
作者:
Debottam Nandi;S. Shankaranarayanan

文献摘要

参考文献

被引文献

相似文献

在这项工作中,我们提出了一个一致的哈密顿分析的宇宙学微扰的广义非正则标量场。为了做到这一点,我们引入了一个新的相空间变量,是唯一定义的不同的非正则标量场。我们还表明,这是最简单和有效的方式来表达的哈密顿量。本文将文[1]的哈密顿方法推广到非正则标量场,得到了声速的相空间变量的唯一表达式。为了将广义相空间汉密尔顿方程反演为Euler-Lagrange运动方程,本文给出了一个通用的反演公式,并证明了我们的方法对非正则标量场是一致的。我们还得到了广义非正则标量场的三阶和四阶相互作用哈密顿量,并简要讨论了我们的方法在广义伽利略标量场上的推广。
In this work, we present a consistent Hamiltonian analysis of cosmological perturbations for generalized non-canonical scalar fields. In order to do so, we introduce a new phase-space variable that is uniquely defined for different non-canonical scalar fields. We also show that this is the simplest and efficient way of expressing the Hamiltonian. We extend the Hamiltonian approach of [1] to non-canonical scalar field and obtain an unique expression of speed of sound in terms of phase-space variable. In order to invert generalized phase-space Hamilton's equations to Euler-Lagrange equations of motion, we prescribe a general inversion formulae and show that our approach for non-canonical scalar field is consistent. We also obtain the third and fourth order interaction Hamiltonian for generalized non-canonical scalar fields and briefly discuss the extension of our method to generalized Galilean scalar fields.
DOI: 10.1088/0067-0049/192/2/18
发表时间: 2011-02-01
影响因子: 8.7
作者:
Komatsu, E.;Smith, K. M.;Wright, E. L.
通讯作者: Wright, E. L.