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 2016-17/
Seminari A.A. 2016-2017
 
 
I Seminari si svolgono il martedì alle 14:30 nell'aula 311 del Dipartimento di Matematica (salvo diversa indicazione)
  
 
Relatore
Titolo
Data
  
 
 
Simone Murro
Looking at the quantum states
with the eyes of algebraic quantum field theory
03 Maggio 2017
(mercoledì ore 11:30)
  
 
 
Domenico Monaco
(De)localization in topological insulators:
a Wannier-function approach
02 Maggio 2017
  
 
 
Omar Zanusso
Conformal field theories of gods
and renormalization group flows of men
27 Aprile 2017
(giovedì ore 11:30)
  
 
 
Markus lange
Renormalization Analysis for Degenerate Eigenvalues
24 Aprile 2017
(lunedì ore 11:30)
  
 
 
Francesco Delfino
Scaling properties
of three-dimensional Bose-Einstein condensed gases
12 Aprile 2017
(mercoledì ore 11:30)
  
 
 
Stefano Marchesani
Hydrodynamic limits, weak solutions and thermodynamics
10 Aprile 2017
(lunedì ore 10:00)
  
 
 
Martin Tassy
Variational principles for discrete maps
07 Aprile 2017
(venerdì ore 11:30)
  
 
 
Matteo Rizzi
The Allen-Cahn and the Cahn-Hilliard equation:
classification and construction of solutions
06 Aprile 2017
(giovedì ore 14:00)
  
 
 
Rafael Greenblatt
Singular behavior of the Lyapunov exponent
of a product of random 2x2 matrices
28 Marzo 2017
  
 
 
Spyros Sotiriadis
Università Roma Tre
Equilibration in one-dimensional quantum hydrodynamic systems
17 Febbraio 2017
(venerdì ore 10:00 Aula 211)
  
 
Abstract
ritorna
We study quench dynamics and equilibration in one-dimensional quantum hydrodynamics, which provides effective descriptions of the density and velocity fields in gapless quantum gases. We show that the information content of the large time steady state is inherently connected to the presence of ballistically moving localised excitations. When such excitations are present, the system retains memory of all initial correlations up to infinite times, thus evading decoherence. We demonstrate this connection in the context of the quantum KdV equation, which admits a hybrid representation in terms of bosonised and fermionised fields. When either dispersion or interaction is present, initially localised excitations spread with time and the steady state is Gaussian in terms of the bosonised or fermionised field respectively. When both dispersion and interaction are simultaneously present, localisation can be induced by the formation of solitary waves, whose stability at the quantum level remains however an open theoretical problem.
 
 
 
Livia Corsi
Georgia Tech
Periodic driving at high frequencies of an impurity in the isotropic XY chain
20 Dicembre 2016
  
 
 
Maurizio Fagotti
ENS - Paris
Transport in out-of-equilibrium spin chains:
exact profiles of charges and currents
25 Ottobre 2016
  
 
 
Paolo Milanesi
Université
Aix-Marseille
Metastabilità del modello di Ising stocastico
18 Ottobre 2016
(ore 16:00)
  
 
 
Alessandro Olgiati
SISSA
Trieste
Effective dynamics for multiple coupled Bose-Einstein condensates
27 Settembre 2016