Abstract
Strongly coupled QED is a model whose physics is dominated by short-ranged effects. In order to assess which features of numerical simulations of the chiral phase transition are universal and which are not, we have formulated a quenched version of the model in which photon degrees of freedom are defined on a lattice of spacing a, but fermions only on a lattice of spacing 2a. The fermi-photon interaction is then obtained via a blocking procedure, whose parameters allow a degree of control over the relative importance of short wavelength modes. Results from a variety of models are presented; the critical exponents {delta} and {beta}{sub m} governing the transition appear to be independent of the blocking, or even of whether a gauge-invariant action is used for the photons. ((orig.)).
Hands, S
[1]
- Wales Univ., Swansea (United Kingdom). Dept. of Phys.
Citation Formats
Hands, S.
Improving the lattice QED action.
Netherlands: N. p.,
1995.
Web.
doi:10.1016/0920-5632(95)00343-8.
Hands, S.
Improving the lattice QED action.
Netherlands.
https://doi.org/10.1016/0920-5632(95)00343-8
Hands, S.
1995.
"Improving the lattice QED action."
Netherlands.
https://doi.org/10.1016/0920-5632(95)00343-8.
@misc{etde_101105,
title = {Improving the lattice QED action}
author = {Hands, S}
abstractNote = {Strongly coupled QED is a model whose physics is dominated by short-ranged effects. In order to assess which features of numerical simulations of the chiral phase transition are universal and which are not, we have formulated a quenched version of the model in which photon degrees of freedom are defined on a lattice of spacing a, but fermions only on a lattice of spacing 2a. The fermi-photon interaction is then obtained via a blocking procedure, whose parameters allow a degree of control over the relative importance of short wavelength modes. Results from a variety of models are presented; the critical exponents {delta} and {beta}{sub m} governing the transition appear to be independent of the blocking, or even of whether a gauge-invariant action is used for the photons. ((orig.)).}
doi = {10.1016/0920-5632(95)00343-8}
journal = []
volume = {42}
journal type = {AC}
place = {Netherlands}
year = {1995}
month = {Apr}
}
title = {Improving the lattice QED action}
author = {Hands, S}
abstractNote = {Strongly coupled QED is a model whose physics is dominated by short-ranged effects. In order to assess which features of numerical simulations of the chiral phase transition are universal and which are not, we have formulated a quenched version of the model in which photon degrees of freedom are defined on a lattice of spacing a, but fermions only on a lattice of spacing 2a. The fermi-photon interaction is then obtained via a blocking procedure, whose parameters allow a degree of control over the relative importance of short wavelength modes. Results from a variety of models are presented; the critical exponents {delta} and {beta}{sub m} governing the transition appear to be independent of the blocking, or even of whether a gauge-invariant action is used for the photons. ((orig.)).}
doi = {10.1016/0920-5632(95)00343-8}
journal = []
volume = {42}
journal type = {AC}
place = {Netherlands}
year = {1995}
month = {Apr}
}