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SYMMETRIES in PHYSICS

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Symmetry and Spontaneous Symmetry Break<strong>in</strong>g<br />

Selected Groups and Symmetries<br />

Spontaneous Symmetry Break<strong>in</strong>g<br />

Spontaneous Symmetry Break<strong>in</strong>g - Interpretation [1]<br />

This transition is called spontaneous s<strong>in</strong>ce the ϑ o -sign chosen by the<br />

system depends on ’irrelevant details’: fluctuations, non-uniformities<br />

Aren’t there ”Some Miracles” Hidden Somewhere?<br />

1 We used no <strong>in</strong>formation about those ’irrelevant details’ yet ...<br />

2 We were able to predict the absolute value of ϑ o <strong>in</strong> experiment<br />

3 Is spontaneous symmetry break<strong>in</strong>g someth<strong>in</strong>g so very unusual?<br />

Jerzy DUDEK<br />

<strong>SYMMETRIES</strong> <strong>in</strong> <strong>PHYSICS</strong>

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