ELFT HÍRADÓ

[Miklós Werner <wernermiklos AT gmail.com>]

A BME-MTA Egzotikus Kvantumfázisok csoport következő szemináriuma:

*Tőke Csaba (BME)*
"Path-integral Monte Carlo simulation of time-reversal noninvariant bulk
systems with a case study of rotating Yukawa gases"

*Időpont és helyszín:*
*2018. április 16. 14:15*
BME Fizikai Intézet könyvtára (F épület, 3. lépcsőház, magasföldszint)

*Kivonat:*
"
We elaborate on the methodology to simulate bulk systems in the absence of
time-reversal symmetry by the phase-fixed path-integral Monte Carlo method
under (possibly twisted) periodic boundary conditions. Such systems include
two-dimensional electrons in the quantum Hall regime and rotating ultracold
Bose and Fermi gases; time-reversal symmetry is broken by an external
magnetic field and the Coriolis force, respectively. We provide closed-form
expressions in terms of Jacobi elliptic functions for the thermal density
matrix (or the Euclidean propagator) of a single particle on a flat torus
under very general conditions. We then modify the multi-slice sampling
method in order to sample paths by the magnitude of the complex-valued
thermal density matrix. Finally, we demonstrate that these inventions let
us study the vortex melting process of a two-dimensional Yukawa gas in
terms of the de Boer interaction strength parameter, temperature, and
rotation (Coriolis force). The bosonic case is relevant to ultracold
Fermi-Fermi mixtures of widely different masses under rotation.
"

Minden érdeklődőt szeretettel várunk.

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

Üdvözlettel,
Werner Miklós Antal