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Speeding up Fermionic Lattice Calculations with Photonic Accelerated Inverters

Autor: Attanasio, Felipe, Bauer, Marc, Dijkstra, Jelle, Lee, Timoteo, Pawlowski, Jan M., Pernice, Wolfram

Lattice field theory (LFT) is the standard non-perturbative method to perform numerical calculations of quantum field theory. However, the typical bottleneck of fermionic lattice calculations is the inversion of the Dirac matrix. This inversion is so

Externí odkaz: http://arxiv.org/abs/2401.14200

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Harmonically trapped fermions in one dimension: A finite temperature lattice Monte Carlo study

Autor: Attanasio, Felipe, Bauer, Marc, Kapust, Renzo, Pawlowski, Jan M.

We study a one-dimensional two-component Fermi gas in a harmonic trapping potential using finite temperature lattice quantum Monte Carlo methods. We are able to compute observables in the canonical ensemble via an efficient projective approach. Resul

Externí odkaz: http://arxiv.org/abs/2309.06766

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Density profiles and correlations of harmonically trapped ultracold fermions via complex Langevin

Autor: Attanasio, Felipe, Bauer, Marc, Pawlowski, Jan M.

Standard lattice formulations of non-relativistic Fermi gases with two spin components suffer from a sign problem in the cases of repulsive contact interactions and attractive contact interactions with spin imbalance. We discuss the nature of this si

Externí odkaz: http://arxiv.org/abs/2212.11314

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Searching for Yang-Lee zeros in O($N$) models

Autor: Attanasio, Felipe, Bauer, Marc, Kades, Lukas, Pawlowski, Jan M.

Near the second order phase transition point, QCD with two flavours of massless quarks can be approximated by an O($4$) model, where a symmetry breaking external field $H$ can be added to play the role of quark mass. The Lee-Yang theorem states that

Externí odkaz: http://arxiv.org/abs/2111.12645

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