ELFT HÍRADÓ

[Janos Asboth <asboth AT phy.bme.hu>]

Meghívó

BME Elméleti Fizika Szeminárium,

december 18. péntek 10h15,
online a Microsoft Teams-ben
<https://teams.microsoft.com/l/meetup-join/19%3a5f89cc340a954650b623e6bf3b7639fd%40thread.tacv2/1608105545015?context=%7b%22Tid%22%3a%226a3548ab-7570-4271-91a8-58da00697029%22%2c%22Oid%22%3a%22c7eaf7d2-684b-4597-b217-6a9121400219%22%7d>

Werner Miklós (BME Elm. Fiz. tanszék):

Tensor Network algorithms with general non-Abelian symmetries

We introduce the notion of non-Abelian tensors, and use them to build a
general non-Abelian matrix product state (NA-MPS) ansatz. We construct a
non-Abelian time evolving block decimation (NA-TEBD) scheme that uses an
arbitrary number of Abelian and non-Abelian symmetries. Our approach
increases the speed and memory storage efficiency of matrix product state
based computations by several orders of magnitudes, and makes large bond
dimensions accessible even on simple desktop architectures. We demonstrate
our approach by studying post-quench dynamics in the repulsive SU(3)
Hubbard model. We determine time evolution of various local operators and
correlation functions and find that interactions turn algebraic charge
relaxation into exponential, and  suppress coherent quantum oscillations
rapidly.

Minden érdeklődőt szeretettel várunk.

Asbóth János
szemináriumi koordinátor