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UID:20250801T200041EDT-3703imXeZc@132.216.98.100
DTSTAMP:20250802T000041Z
DESCRIPTION:Soliton surfaces obtained via $CP^{N-1}$ sigma models\n\nThis t
 alk is devoted to the study of an invariant formulation of completely inte
 grable ${C}P^{N-1}$ Euclidean sigma models in two dimensions\, defined on 
 the Riemann sphere\, having finite actions. Surfaces connected with the ${
 C}P^{N-1}$ models\, invariant recurrence relations linking the successive 
 projection operators and immersion functions of the surfaces are discussed
  in detail. Making use of the fact that the immersion functions of the sur
 face satisfy the same Euler-Lagrange equations as the original projector v
 ariables\, we derive surfaces induced by surfaces and prove that the stack
 ed surfaces coincide with each other\, which demonstrates the idempotency 
 of the recurrent procedure. We also show that the ${C}P^{N-1}$ model equat
 ions admit larger classes of solutions than the ones corresponding to rank
 -1 Hermitian projectors.\n
DTSTART:20180424T193000Z
DTEND:20180424T203000Z
LOCATION:Room 4336\, CA\, Pav. André-Aisenstadt\, 2920\, ch. de la Tour
SUMMARY:Michel Grundland\, UQTR et CRM
URL:/mathstat/channels/event/michel-grundland-uqtr-et-
 crm-286739
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