从标准宇宙学和CMBR的谱畸变约束CSL强度参数$λ$
Constraining CSL strength parameter $λ$ from standard cosmology and spectral distortions of CMBR
摘要：
自发波函数坍缩模型是在标准量子力学的线性薛定谔方程中加入随机非线性项，以描述微观系统的量子（线性）性质和宏观系统的经典性质（违反叠加原理）。在薛定谔方程中加入这样的非线性项会导致所考虑的系统的能量非能量守恒。因此，坍缩模型的一个显著特征是以恒定速率加热非相对论性粒子。如果这样的过程是物理的，那么它就有能力扰乱我们熟知的宇宙热历史。在这篇文章中，我们将尝试调查的影响，这种加热项的标准演化的非相对论性物质和形成的CMBR。我们将使用CSL模型，这是最广泛使用的崩溃模型。考虑到非相对论性物质的标准演化不受阻碍，并且观测到的CMBR的精确黑体光谱不会失真（以$μ-$型和$y-$型失真的形式），从而违反观测到的界限，我们还将对CSL坍缩率$λ$施加约束。
英文摘要：
Models of spontaneous wave function collapse modify the linear Schrödinger equation of standard Quantum Mechanics by adding stochastic non-linear terms to it. The aim of such models is to describe the quantum (linear) nature of microsystems along with the classical nature (violation of superposition principle) of macroscopic ones. The addition of such non-linear terms in the Schrödinger equation leads to non-conservation of energy of the system under consideration. Thus, a striking feature of collapse models is to heat non-relativistic particles with a constant rate. If such a process is physical, then it has the ability to perturb the well-understood thermal history of the universe. In this article we will try to investigate the impacts of such heating terms on standard evolution of non-relativistic matter and on the formation of CMBR. We will use the CSL model, the most widely used collapse model. We will also put constraints on the CSL collapse rate $λ$ by considering that the standard evolution of non-relativistic matter is not hampered and the observed precise blackbody spectrum of CMBR would not get distorted (in the form of $μ-$type and $y-$type distortions) so as to violate the observed bounds.
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