26 citations · 26 across the 3 of their papers we have counts for
5 papers
Distance between configurations in MCMC simulations and the geometrical optimization of the tempering algorithms
Masafumi Fukuma, Nobuyuki Matsumoto, Naoya Umeda
For a given Markov chain Monte Carlo (MCMC) algorithm, we define the distance between configurations that quantifies the difficulty of transitions. This distance enables us to inve…
Tempered Lefschetz thimble method and its application to the Hubbard model away from half filling
Masafumi Fukuma, Nobuyuki Matsumoto, Naoya Umeda
The tempered Lefschetz thimble method (TLTM) is a parallel-tempering algorithm towards solving the numerical sign problem. It tames both the sign and ergodicity problems simultaneo…
Implementation of the HMC algorithm on the tempered Lefschetz thimble method
Masafumi Fukuma, Nobuyuki Matsumoto, Naoya Umeda
The tempered Lefschetz thimble method (TLTM) is a parallel-tempering algorithm towards solving the numerical sign problem, where the system is tempered by the antiholomorphic gradi…
Applying the tempered Lefschetz thimble method to the Hubbard model away from half-filling
Masafumi Fukuma, Nobuyuki Matsumoto, Naoya Umeda
The tempered Lefschetz thimble method is a parallel-tempering algorithm towards solving the numerical sign problem. It uses the flow time of the gradient flow as a tempering parame…
Triangle-hinge models for unoriented membranes
Masafumi Fukuma, Sotaro Sugishita, Naoya Umeda
Triangle-hinge models [arXiv:1503.08812] are introduced to describe worldvolume dynamics of membranes. The Feynman diagrams consist of triangles glued together along hinges and can…