5 papers
Sensitivity Parameter and Time Variations of Fundamental Constants
Su Yan
The sensitivity parameter is widely used for quantifying fine tuning. However, examples show it fails to give correct results under certain circumstances. We argue that the problem…
Problems of the Sensitivity Parameter and Its Relation to the Time-varying Fundamental Couplings Problems
Su Yan
The sensitivity parameter is widely used for quantifying fine tuning. However, examples show it fails to give correct results under certain circumstances. We argue that these probl…
Explanation to the Problem of the Naturalness measurements
Su Yan
The sensitivity parameter is widely used in measuring the severity of fine-tuning, while many examples show it doesn't work under certain circumstances. The validity of the sensiti…
A Criterion of Naturalness in Renormalization
Su Yan
The sensitivity criterion is widely used in measuring the level of fine-tuning, although many examples show it doesn't work under certain circumstances. We discuss the mathematics…
Naturalness and Naturalness Criteria
Su Yan
We analysis how to describe the level of naturalness and pointed out that Barbieri and Giudice's the widely adopted sensitivity criteria of naturalness can not reflect the level of…