On the type of the temperature phase transition in phi-4 model
Institute for Theoretical Physics, University of Leipzig, Leipzig, Germany
arXiv:1012.5383 [hep-lat] (24 Dec 2010)
@article{2010arXiv1012.5383B,
author={Bordag}, M. and {Demchik}, V. and {Gulov}, A. and {Skalozub}, V.},
title={“{On the type of the temperature phase transition in phi-4 model}”},
journal={ArXiv e-prints},
archivePrefix={“arXiv”},
eprint={1012.5383},
primaryClass={“hep-lat”},
keywords={High Energy Physics – Lattice, High Energy Physics – Phenomenology},
year={2010},
month={dec},
adsurl={http://adsabs.harvard.edu/abs/2010arXiv1012.5383B},
adsnote={Provided by the SAO/NASA Astrophysics Data System}
}
The temperature induced phase transition is investigated in the one-component scalar field phi^4 model on a lattice by using Monte Carlo simulations. Due to GPGPU technology used a huge amount of data is generated and treated that gives a possibility to determine the Linde-Weinberg low bound on the coupling constant lambda_0 and investigate the type of the phase transition for a wide interval of coupling values. It is found that for the values of lambda close to this bound a weak-first-order phase transition happens. It converts into a second order phase transition with the increase of lambda. A comparison with analytic calculations in continuum field theory and lattice simulations obtained by other authors is given.
December 27, 2010 by hgpu
