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DOI: 10.5445/IR/1000086109
Veröffentlicht am 01.10.2018
DOI: 10.1088/2399-6528/aada25

Observation-based symmetry breaking measures

Fernandez-Corbaton, Ivan

Symmetry is one of the most general and useful concepts in physics. A system that has a symmetry is fundamentally constrained by it. The same constraints do not apply when the symmetry is broken. The quantitative determination of how much a system breaks a symmetry allows to reach beyond this binary situation and is a necessary step towards the quantitative connection between symmetry breaking and its effects. We introduce measures of symmetry breaking for a system interacting with external fields (particles). They can be computed from measurements of the system-mediated coupling strengths between subspaces of incoming and outgoing fields (particles) that transform in a definite way under the symmetry. The generality of these symmetry breaking measures and their tight connection to experimental measurements make them applicable to a very wide range of physics, like quantification of phase transitions, constraints in dynamical evolution, and the search for hidden symmetries.

Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 2399-6528
URN: urn:nbn:de:swb:90-861096
KITopen ID: 1000086109
Erschienen in Journal of physics communications
Band 2
Heft 9
Seiten 095002
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 04.09.2018
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