Next tues. seminar at SISSA

[Cond.Matt. & Stat.Mech.Section]

JOINT ICTP/SISSA STATISTICAL PHYSICS SEMINAR

 

Tuesday, 28 February-   11:00 hrs.

 



SISSA, Santorio Building,   Room 128 (1st Floor)

 

  

Spyros SOTIRIADIS    ( SISSA )

 

"Zamolodchikov-Faddeev algebra and   quantum quenches in integrable field theories"

 

Abstract

 

Motivated by the study of quantum quenches in integrable field theories (IFTs) and in particular the structure of the initial state after such a quench, we are led to the investigation of transformations of the Zamolodchikov-Faddeev operators that respect their algebra. After showing that, unlike in free theories, linear transformations (Bogoliubov transformations) do not satisfy this condition, we explore simple cases of infinitesimal transformations that do so and study their properties. Examples from typical IFTs like the Sinh-Gordon and Lieb-Liniger models are presented, emphasizing the possibility to study quantum quenches.