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[Fizinfo] BME Elméleti Fizika Tanszék és Statisztikus Térelmélet Kutatócsoport szemináriuma


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  • From: tcsaba <tcsaba AT eik.bme.hu>
  • To: fizinfo AT lists.kfki.hu
  • Subject: [Fizinfo] BME Elméleti Fizika Tanszék és Statisztikus Térelmélet Kutatócsoport szemináriuma
  • Date: Sat, 10 Jun 2017 09:58:33 +0200

M E G H Í V Ó - I N V I T A T I O N

Seminar Series of the Department of Theoretical Physics at the
Budapest University of Technology and Economics
Seminar of the Statistical Field Theory Research Group

Mario Collura
(University of Oxford)

Non-equilibrium transport in the XXZ spin-1/2 chain


I will consider the recent developments in the non-equilibrium time-evolution of interacting integrable models, thus focusing on the unitary dynamics induced by joining two XXZ spin-1/2 chains with different global properties. Through dephasing, at late times, the state becomes locally equivalent to a stationary state which explicitly depends on position and time. A kinetic theory of elementary excitations has been proposed to derive a continuity equation which fully characterizes the thermodynamics of the model. The system is prepared in the gapless phase and in different initial conditions: (1) at different temperatures, (2) in the ground state of two different models, and (3) in the "domain wall" state. Excellent agreement between theoretical predictions and numerical simulations, based on iTEBD, has been found. As a corollary, an exact expression for the expectation values of the charge currents in a generic stationary state has been unveiled.

Időpont: 2017. június 13. kedd, 14:15
Helyszín: BME Fizikai Intézet, Elméleti Fizika Tanszék,
Budafoki út 8. F-épület, III lépcsőház, szemináriumi szoba


  • [Fizinfo] BME Elméleti Fizika Tanszék és Statisztikus Térelmélet Kutatócsoport szemináriuma, tcsaba, 06/10/2017

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