ELFT HÍRADÓ

[Miklós Werner <wernermiklos AT gmail.com>]

A BME-MTA Egzotikus Kvantumfázisok csoport következő szemináriuma:

*Vajna Szabolcs (BME és University of Ljubljana)*
"Replica resummation of the Baker-Campbell-Hausdorff series"

*Időpont és helyszín:*
2017. október 16. 14:15
BME Elméleti Fizika Tanszék szemináriumi szobája (F épület, 3. lépcsőház,
magasföldszint)

*Kivonat:*
"We developed a novel perturbative expansion for the effective Hamiltonian
governing the dynamics of periodically kicked systems in the small
parameter of the kick strength. The expansion is based on the replica
trick, and is formally equivalent to the infinite resummation of the
Baker-Campbell-Hausdorff series in the non-kicked Hamiltonian, while taking
finite order terms in the kicks. As an application of the replica
expansion, we study the heating properties of a periodically kicked spin
chain. We demonstrate that even away from the high frequency driving limit,
the heating rate is at least stretched exponentially suppressed in the kick
strength. This leads to a long pre-thermal regime, where the dynamics is
governed by the effective Hamiltonian obtained from the expansion."

Minden érdeklődőt szeretettel várunk.

A szemináriumsorozat további programja:
http://physics.bme.hu/seminar_eqp?language=en

Üdvözlettel,
Werner Miklós Antal