Tempered Fermions in the hybrid Monte Carlo algorithm
نویسندگان
چکیده
منابع مشابه
Tempered Fermions in the Hybrid Monte Carlo Algorithm
The standard algorithms used for full QCD are painfully slow. Physically large objects, like instantons, pions etc., may well decorrelate much more slowly than, say, the plaquette [1]. Tempered algorithms [1–3] promote a parameter of the theory to a dynamical variable that changes during the simulation, which has tremendous potential for speeding up slow simulations. They have been successfully...
متن کاملSpeeding up the Hybrid-Monte-Carlo algorithm for dynamical fermions
In large scale simulations of lattice QCD with two flavours of mass-degenerate Wilson fermions, the mass of the fermions is still too large compared with the up and the down quark masses. Therefore a delicate extrapolation of the data is needed. Unfortunately, the numerical effort required for the Hybrid-Monte-Carlo (HMC) [1] algorithm increases as the quark mass decreases for, at least, three ...
متن کاملDynamical overlap fermions , results with hybrid Monte - Carlo algorithm
We present first, exploratory results of a hybrid Monte-Carlo algorithm for dynamical, n f =2, four-dimensional QCD with overlap fermions. As expected, the computational requirements are typically two orders of magnitude larger for the dynamical overlap formalism than for the more conventional (Wilson or staggered) formulations.
متن کاملContinuously Tempered Hamiltonian Monte Carlo
Hamiltonian Monte Carlo (HMC) is a powerful Markov chain Monte Carlo (MCMC) method for performing approximate inference in complex probabilistic models of continuous variables. In common with many MCMC methods, however, the standard HMC approach performs poorly in distributions with multiple isolated modes. We present a method for augmenting the Hamiltonian system with an extra continuous tempe...
متن کاملThe well-tempered auxiliary-field Monte Carlo.
The auxiliary-field Monte Carlo (AFMC) is a method for computing ground-state and excited-state energies and other properties of electrons in molecules. For a given basis set, AFMC is an approximation to full-configuration interaction and the accuracy is determined predominantly by an inverse temperature "beta" parameter. A considerable amount of the dynamical correlation energy is recovered ev...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 1998
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(97)00495-7