3 papers
hep-lat2026
Gauge field digitization in the Hamiltonian limit
Attila Pasztor, David Pesznyak
Quantum computers can circumvent the numerical sign problem in gauge theories at finite density or in real time. Quantum simulations of gauge theories require a finite-dimensional…
hep-lat2025
Is it worth the effort to find Lefschetz thimbles? Integration contours with numerically optimal signal-to-noise ratios in simple fermionic toy models
Attila Pasztor, David Pesznyak
We perform a detailed analysis of the fermionic sign problem in a series of one dimensional integrals, that are achieved as extreme (one-site) limits of genuine physics models. Alt…
hep-lat2023
Continuum extrapolated high order baryon fluctuations
Szabolcs Borsányi, Zoltán Fodor, Jana N. Guenther +6
Fluctuations play a key role in the study of QCD phases. Lattice QCD is a valuable tool to calculate them, but going to high orders is challenging. Up to the fourth order, continuu…