Abstract

It is proved strictly based on general relativity that two important factors are neglected in LIGO experiments by using Michelson interferometers so that fatal mistakes were caused. One is that the gravitational wave changes the wavelength of light. Another is that light’s speed is not a constant when gravitational waves exist. According to general relativity, gravitational wave affects spatial distance, so it also affects the wavelength of light synchronously. By considering this fact, the phase differences of lasers were invariable when gravitational waves passed through Michelson interferometers. In addition, when gravitational waves exist, the spatial part of metric changes but the time part of metric is unchanged. In this way, light’s speed is not a constant. When the calculation method of time difference is used in LIGO experiments, the phase shift of interference fringes is still zero. So the design principle of LIGO experiment is wrong. It was impossible for LIGO to detect gravitational wave by using Michelson interferometers. Because light’s speed is not a constant, the signals of LIGO experiments become mismatching. It means that these signals are noises actually, caused by occasional reasons, no gravitational waves are detected really. In fact, in the history of physics, Michelson and Morley tried to find the absolute motion of the earth by using Michelson interferometers but failed at last. The basic principle of LIGO experiment is the same as that of Michelson-Morley experiment in which the phases of lights were invariable. Only zero result can be obtained, so LIGO experiments are destined failed to find gravitational waves.

Highlights

  • February 11, 2016, LIGO (Laser Interference Gravitational-Waves Observatory) announced to detect gravitational waves events GW150914 [1]

  • It is proved strictly based on general relativity that two important factors are neglected in LIGO experiments by using Michelson interferometers so that fatal mistakes were caused

  • When the calculation method of time difference is used in LIGO experiments, the phase shift of interference fringes is still zero

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Summary

Introduction

February 11, 2016, LIGO (Laser Interference Gravitational-Waves Observatory) announced to detect gravitational waves events GW150914 [1]. We proved strictly that by using Michelson interferometers, LIGO cannot detect gravitational waves. When two lights travelling along two arms which are displaced vertically meet together, the shapes of interference fringes will change Based on this phase shifts, gravitational waves can be observed. Light’s speed was considered as a constant in LIGO experiments It is proved strictly based on general relativity that when gravitational waves exist, light’s speed is not a constant again. If light’s speed is less than its speed in vacuum when it travels along one arm of interferometer, its speed will be great than its speed in vacuum when it travels along another arm, i.e., so-called superluminal motion occurs In this way, no time differences exist when two lights meet together in Michelson interferometer. The signals occurred in LIGO experiments could only be noises caused by some occasional reasons

Light’s Phase Difference Is Invariable in LIGO Experiments
Light’s Speed Is Not a Constant When Gravitational Waves Exist
The Problems Existing in the Third Method to Calculate Phase Shifts of Light
Comparison between LIGO Experiment and Michelson-Morley Experiment
Conclusions
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