%0 Generic %1 Lüscher2011 %A Lüscher, Martin %A Schaefer, Stefan %D 2011 %K HMC Renormalisation %T Non-renormalizability of the HMC algorithm %U http://arxiv.org/abs/1103.1810 %X In lattice field theory, renormalizable simulation algorithms are attractive, because their scaling behaviour as a function of the lattice spacing is predictable. Algorithms implementing the Langevin equation, for example, are known to be renormalizable if the simulated theory is. In this paper we show that the situation is different in the case of the molecular-dynamics evolution on which the HMC algorithm is based. More precisely, studying the phi^4 theory, we find that the hyperbolic character of the molecular-dynamics equations leads to non-local (and thus non-removable) ultraviolet singularities already at one-loop order of perturbation theory.

@misc{Lüscher2011, abstract = { In lattice field theory, renormalizable simulation algorithms are attractive, because their scaling behaviour as a function of the lattice spacing is predictable. Algorithms implementing the Langevin equation, for example, are known to be renormalizable if the simulated theory is. In this paper we show that the situation is different in the case of the molecular-dynamics evolution on which the HMC algorithm is based. More precisely, studying the phi^4 theory, we find that the hyperbolic character of the molecular-dynamics equations leads to non-local (and thus non-removable) ultraviolet singularities already at one-loop order of perturbation theory. }, added-at = {2011-03-10T09:06:09.000+0100}, author = {Lüscher, Martin and Schaefer, Stefan}, biburl = {https://www.bibsonomy.org/bibtex/2411673dd97aff6d6925cc0a620e197c3/gber}, description = {Non-renormalizability of the HMC algorithm}, interhash = {7f9237fdc1258452e116e671ad2b5bba}, intrahash = {411673dd97aff6d6925cc0a620e197c3}, keywords = {HMC Renormalisation}, note = {cite arxiv:1103.1810 Comment: Plain TeX source, 23 pages, 3 figures included}, timestamp = {2011-03-10T09:06:09.000+0100}, title = {Non-renormalizability of the HMC algorithm}, url = {http://arxiv.org/abs/1103.1810}, year = 2011 }