New techniques and results for worldline simulations of lattice field theories

Mario Giuliani; Oliver Orasch; Christof Gattringer

doi:10.1051/epjconf/201817507007

EPJ

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Proceedings

Open Access

EPJ Web of Conferences 175, 07007 (2018)
https://doi.org/10.1051/epjconf/201817507007

New techniques and results for worldline simulations of lattice field theories

Mario Giuliani^*, Oliver Orasch^** and Christof Gattringer^***

Institut für Physik, Universität Graz, 8010 Graz, Austria

^* Speaker, e-mail: mario.giuliani@uni-graz.at
^** Speaker, e-mail: oliver.orasch@edu.uni-graz.at
^*** e-mail: christof.gattringer@uni-graz.at

Published online: 26 March 2018

Abstract

We use the complex ø⁴ field at finite density as a model system for developing further techniques based on worldline formulations of lattice field theories. More specifically we: 1) Discuss new variants of the worm algorithm for updating the ø⁴ theory and related systems with site weights. 2) Explore the possibility of canonical simulations in the worldline formulation. 3) Study the connection of 2-particle condensation at low temperature to scattering parameters of the theory.

© The Authors, published by EDP Sciences, 2018

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).