Lab Home | Phone | Search
Center for Nonlinear Studies  Center for Nonlinear Studies
 Home 
 People 
 Current 
 Affiliates 
 Alumni 
 Visitors 
 Students 
 Research 
 ICAM-LANL 
 Publications 
 Publications 
 2007 
 2006 
 2005 
 2004 
 2003 
 2002 
 2001 
 2000 
 <1999 
 Conferences 
 Workshops 
 Sponsorship 
 Talks 
 Colloquia 
 Colloquia Archive 
 Seminars 
 Postdoc Seminars Archive 
 Quantum Lunch 
 CMS Colloquia 
 Q-Mat Seminars 
 Q-Mat Seminars Archive 
 Archive 
 Kac Lectures 
 Dist. Quant. Lecture 
 Ulam Scholar 
 Colloquia 
 
 Jobs 
 Students 
 Summer Research 
 Student Application 
 Visitors 
 Description 
 Past Visitors 
 Services 
 General 
 PD Travel Request 
 
 History of CNLS 
 
 Maps, Directions 
 CNLS Office 
 T-Division 
 LANL 
 
Tuesday, October 17, 2017
1:00 PM - 2:00 PM
CNLS Conference Room (TA-3, Bldg 1690)

Seminar

Critical properties of long range quantum rotor models

Nicolo Defenu
University of Heidelberg 

The interest in long range interactions has increased in the last years due to the recent simulations with cold atomic devices. Our investigation focuses on the derivation of the phase diagram and the critical exponents of weak long range interacting N components quantum rotor models (the N = 1 case being the quantum Ising model). Our picture is generic, non perturbative and it is valid for any spin components number N, spatial dimension d and decay exponent σ. The phase diagram as a function of the decay exponent σ is rich and the correlation functions are strongly anisotropic in the spatial and time coordinates. The application of these results to experimental realization of ultra-thin Fe films will be discussed. Moreover expectations upon the dynamical properties will be presented.

Host: Avadh Saxena