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VERSION:2.0
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CALSCALE:GREGORIAN
X-WR-TIMEZONE;VALUE=TEXT:Europe/Zurich
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DTSTAMP:20261014T204707Z
UID:85f85dbf-117c-41e3-9aa2-31e8d327a3f1
DTSTART:20261014T150000
DTEND:20261014T160000
DESCRIPTION:Certain universal aspects of confining flux tubes in gapped con
 fining phases are naturally described within the framework of Effective St
 ring Theory (EST)\, regarded as the effective field theory of Goldstone fi
 elds living on the worldsheet traced by the string. Motivated by the neces
 sity to extend this framework beyond this universal sector\, we consider t
 he dynamics of confined strings in a medium with vanishing mass gap. This 
 study is performed for the concrete example of the CP1 NLSM in d=4 dimensi
 ons and make a precise quantitative computation of the leading deviations 
 from EST for the case of two observables: the ground state energy and the 
 effective width. We also comment on proposed UV completions of this model 
 in terms of strongly coupled gauge theories.
LOCATION:ETH Zürich\, Hönggerberg HIT E 41.1
ORGANIZER:Jeremias Aguilera Damia
SUMMARY:Confining strings in a gapless phase
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