ELFT HÍRADÓ

[Janos Asboth <asboth.janos AT ttk.bme.hu>]

Meghívó

BME Elméleti Fizika Szeminárium,

ápr. 19. péntek 10h15,

1111 Budapest, Budafoki út 8., BME F III. magasföldszint 01.,
Elméleti Fizika Tanszék szemináriumi szoba

Rakovszky Tibor  (Stanford University)
The dissipation-assisted approach to quantum transport: extensions and new
results

Predicting dynamical properties of interacting quantum many-body systems
from first principles is a notoriously difficult task. In my talk, I will
describe a numerical method named "dissipation-assisted operator evolution"
(DAOE) which we proposed to tackle this problem. DAOE builds on recent
insights about the spreading of information in closed quantum systems to
motivate an approximation scheme, which can be carried out efficiently
using tensor networks. I will argue that DAOE can yield quantitatively
accurate estimates of transport coefficients at a numerical cost that is
essentially exponentially smaller than more brute-force approaches. Then I
will go on to discuss various extensions of DAOE, including a formulation
tailored to fermionic systems and another aimed at capturing the effect of
varying charge density on transport coefficients.

Minden érdeklődőt szeretettel várunk.
Asbóth János,
 szemináriumi koordinátor