High-Energy Physics
High-energy physics (HEP) is the study of fundamental particles, fields, and forces, using high-energy events to probe the smallest objects and lengths possible. HEP is based on three main ideas; a) that quantum theory is applicable to elementary particle physics, b) that the description of all phenomena must be consistent with the special theory of relativity, and c) that certain “internal symmetries” restrict the phenomena [1]. The combination of a) and b) is known as quantum field theory. Quantum field theory is the key theory-forming framework in elementary particle physics and HEP, although it is limited in its usefulness with regards to strong couplings and the strong nuclear force. Researchers today seek to find working theories for the strong interactions in particular, often substituting sophisticated phenomenology in the place of theory [1].
Tools and Applications of Physics Research
In the quest for working theory, researchers create models based on fundamental principles such as Lorentz invariance, analyticity, unitarity, and the conservation of certain internal symmetries [2]. These models predict or explain certain phenomena. When combined with the phenomenology obtained from experiment, researchers are able to judge the effectiveness of models, and develop theories based on the results. It is from the results of experiment combined with effective models and theories that researchers are able to gain a greater sense of the universe around us. It is hoped that this increased understanding of the structure of matter and space-time will provide many applications in the production of energy and medical solutions for mankind.
References
[1] S. Gasiorowicz, Elementary Particle Physics, John Wiley and Sons, Inc.: New York, NY (1966)
[2] K. Hagiwara et. al., Phys. Rev. D66, 010001 (2002)
Albert Einstein thumbs his nose at classical mechanics…
Well, not really, but I thought that line was funny…
