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核子-核子散射一圈图的手征有效场论分析 被引量:1
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作者 李帆 杨继锋 《华东师范大学学报(自然科学版)》 CAS CSCD 北大核心 2016年第3期67-75,共9页
采用相对论性框架下的手征有效场论,对核子-核子散射的π交换一圈图过程重要圈图进行了计算和分析,即三角图(triangle diagrams)和平面箱图(planar box diagram,简写为pb),并以此为基础进一步分析讨论了核子-核子散射手征有效场论的结... 采用相对论性框架下的手征有效场论,对核子-核子散射的π交换一圈图过程重要圈图进行了计算和分析,即三角图(triangle diagrams)和平面箱图(planar box diagram,简写为pb),并以此为基础进一步分析讨论了核子-核子散射手征有效场论的结构特点,为最终建立一个满意的核力有效场论框架做新的探索. 展开更多
关键词 手征有效场论 核子-核子散射 相对论性框架 π交换
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Geometry Is the Common Thread in a Grand Unified Field Theory
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作者 Olaniyi S. Maliki 《Journal of Physical Science and Application》 2017年第4期38-46,共9页
The consequence of the wave-particle duality is a pointer to the fact that everything in the universe, including light and gravity, can be described in terms of particles. These particles have a property called spin. ... The consequence of the wave-particle duality is a pointer to the fact that everything in the universe, including light and gravity, can be described in terms of particles. These particles have a property called spin. What the spin of a particle really tells us is what the particle looks like from different directions, in other words it is nothing more than a geometrical property. The motivation for this work stems from the fact that geometry has always played a fundamental role in physics, macroscopic and microscopic, relativistic and non-relativistic. Our belief is that if a GUT (Grand Unified Theory) is to be established at all, then geometry must be the common thread connecting all the different aspects of the already known theories. We propose a new way to visualize the concept of four-dimensional space-time in simple geometrical terms. It is observed that our time frame becomes curved, just as the space-frame, in the presence of a massive gravitating body. Specifically, in the event horizon of a black hole, where time seems to grind to a halt for external observers, the time frame appears to curve in on itself, forming an imaginary loop. This results in extreme time dilation, due to the strong gravitational field. Finally we adopt a descriptive view of a GUT called Quantum Necklace GUT which attempts to connect gravity together the other three fundamental forces of nature, namely the strong, weak and electromagnetic interactions. 展开更多
关键词 GUT GEOMETRY SPACE-TIME spin RELATIVITY Einstein field equations.
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