RT Journal Article
T1 Complex saddle points in the Gross-Witten-Wadia matrix model
A1 Álvarez Galindo, Gabriel
A1 Martínez Alonso, Luis
A1 Medina, Elena
AB We give an exhaustive characterization of the complex saddle point configurations of the Gross-WittenWadia matrix model in the large-N limit. In particular, we characterize the cases  in which the saddles accumulate in one, two, or three arcs, in terms of the values of the coupling constant and of the fraction of the total unit density that is supported in one of the arcs, and derive an explicit condition for gap closing associated with nonvacuum saddles. By applying the idea of large-N instanton we also give direct analytic derivations of the weak- coupling and strong-coupling instanton actions.
PB Amer Physical Soc
SN 2470-0010
YR 2016
FD 2016-11-14
LK https://hdl.handle.net/20.500.14352/17738
UL https://hdl.handle.net/20.500.14352/17738
LA eng
NO © 2016 American Physical Society.We wish to acknowledge the support of the Spanish Ministerio de Economía y Competitividad under Project No. FIS2015-63966-P.
NO Ministerio de Economía y Competitividad (MINECO)
DS Docta Complutense
RD 7 abr 2025