Angel "Java" Lopez en Blog

Publicado el 17 de Septiembre, 2014, 14:55

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Hay tanto para estudiar, comentar y compartir sobre este tema. Por un lado, es un tópico importante de la física, y aún en las matemáticas modernas. Por otro lado, es difícil encontrar una explicación clara y para "amateurs" interesados como yo. O hay explicaciones muy simplificadas, o hay artículos muy técnicos.

Uno de los libros que estoy leyendo, es "An Elementary Primer for Gauge Theory" de K.Moriyasu. Me parece bien organizado, escrito a comienzos de los ochenta del siglo pasado. Leo al comienzo:

The understanding of nuclear and elementary particle physics has now reached a historical turning point. During the last decade, a revolution has quietly occurred — a revolution called "Gauge Theory". For the first time in 50 years, since the birth of modern nuclear physics, gauge theory allows us to understand how the fundamental forces of nature may be unified within a single coherent theory. The discovery of gauge theory rivals in importance the development of both relativity and quantum mechanics. In contrast to the situation less than 10 years ago, gauge theory now dominates nearly ;ill phases of elementary particle physics today. Even the reasons for performing new experiments are now judged by their relevance for testing the predictions of gauge theory.

Clearly, such an exciting development should be widely accessible and understandable not only to theoreticians but also to experimental physicists, students and the "intelligent layman" as well, like politics and war, gauge theory has become too important to he left only to the experts...

Bueno, un poco exagerado, pero pienso que es muy interesante difundir los temas que tocan estas teorías, porque sino no se entiende de que va la física de partículas de nuestros días.

...Unfortunately, for the reader who wishes to first understand the basic physical ideas behind gauge theory, the published literature can present a daunting challenge. The leason for the difficulty is that gauge theory represents a totally new synthesis of quantum mechanics and symmetry ideas which have been applied to the entire field of elementary particle physics. I believe that gauge theory can be appreciated by the nonexpert; that is the raison d'etre for this primer. In order to emphasize the physics of gauge theory rather than the mathematical formalism, I have used a new intuitive approach and designed the text primarily for the reader with only a background in quantum mechanics. My "oul in this primer is to hopefully leave the reader with an appreciation of the elegance and beauty of gauge theory.

Sí, hace falta conocer algo de mecánica cuántica, y también de las matemáticas necesarias, como conceptos de geometría diferencial. Pero el autor va avanzando mostrando los temas de una forma más clara que otras introducciones que he hojeado.

This book was motivated by my own desire as a "non-expert" to learn something about gauge theory. Over a period of 4-5 years, I wrote a series of short pedagogical articles on gauge theory topics for the American and European Journals of Physics. These articles allowed me to test the ideas and the writing style for this primer. I also found that trying to satisfy the high standards of the referees for these journals encouraged me to develop much clearer explanations for many gauge theory topics. I am indebted to these referees who do their work in anonymity.

Por lo que leí, hace falta más que ser un lego interesado: cuando introduce algunas fórmulas, si bien sencillas, son dadas como ya conocidas por el lector. Supongo que habrá querido decir "non-expert physicist or student".

Esta es una de las fuentes que voy a usar cuando me anime a comenzar una serie de post explícitos sobre teorías gauge, sin que sean como esta serie, simple notas para compartir.

Nos leemos!

Angel "Java" Lopez
http://www.ajlopez.com
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Por ajlopez, en: Ciencia