BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//CERN//INDICO//EN
BEGIN:VEVENT
SUMMARY:Fast algorithms for chiral fermions in 2 dimensions
DTSTART;VALUE=DATE-TIME:20170620T173000Z
DTEND;VALUE=DATE-TIME:20170620T183000Z
DTSTAMP;VALUE=DATE-TIME:20200220T052943Z
UID:indico-contribution-116@cern.ch
DESCRIPTION:Speakers: Dr. OSMANAJ (ZEQIRLLARI)\, Rudina (University of Tir
ana\, Faculty of Natural Sciences\, Department of Physics)\nIn lattice QCD
simulations the formulation of the theory in lattice should be chiral in
order that symmetry breaking happens dynamically from interactions. In ord
er to guarantee this symmetry on the lattice one uses overlap and domain w
all fermions. On the other hand high computational cost of lattice QCD sim
ulations with overlap or domain wall fermions remains a major obstacle of
research in the field of elementary particles. We have developed the preco
nditioned GMRESR algorithm as fast inverting algorithm for chiral fermions
in U(1) lattice gauge theory. In this algorithm we used the geometric mul
tigrid idea along the extra dimension. The main result of this work is tha
t the preconditioned GMRESR is capable to accelerate the convergence 2 to
12 times faster than the other optimal algorithms (SHUMR) for different co
upling constant and lattice 32 x 32. Also\, in this paper we tested it fo
r larger lattice size 64 x 64. From the results of simulations we can see
that our algorithm is faster than SHUMR. This is a very promising result t
hat this algorithm can be adapted also in 4 dimension.\n\nhttps://makondo.
ugr.es/event/0/session/24/contribution/116
LOCATION:Palacio de Congresos
URL:https://makondo.ugr.es/event/0/session/24/contribution/116
END:VEVENT
END:VCALENDAR