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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.

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Verlagsausgabe §
DOI: 10.5445/IR/1000086109
Veröffentlicht am 01.10.2018
DOI: 10.1088/2399-6528/aada25
Seitenaufrufe: 39
seit 03.10.2018
Downloads: 32
seit 03.10.2018
Zugehörige Institution(en) am KIT Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 2399-6528
KITopen-ID: 1000086109
HGF-Programm 43.23.01 (POF III, LK 01)
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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