Zobrazeno 1 - 10
of 95
pro vyhledávání: '"Sexty, Denes"'
Autor:
Hansen, Michael W., Sexty, Dénes
We study complex Langevin simulations of a toy model as well as QCD, supplemented with a dynamical stabilization (DS) term, which was proposed to regularize the complexified process at lower temperatures. We compare the results to reweghting from zer
Externí odkaz:
http://arxiv.org/abs/2405.20709
In this conference proceeding, we investigate the physical anisotropy in terms of the temporal and spatial lattice spacings in relation to the bare parameters of SU(2) pure gauge theory using Wilson gradient flow. Anisotropic lattices have a wide ran
Externí odkaz:
http://arxiv.org/abs/2312.08172
We present a simulation strategy for the real-time dynamics of quantum fields, inspired by reinforcement learning. It builds on the complex Langevin approach, which it amends with system specific prior information, a necessary prerequisite to overcom
Externí odkaz:
http://arxiv.org/abs/2310.08053
Autor:
Lampl, Nina Maria, Sexty, Dénes
The real time evolution of a scalar field in 0+1 dimensions is investigated on a complex time contour. The path integral formulation of the system has a sign problem, which is circumvented using the Complex Langevin equation. Measurement of the bound
Externí odkaz:
http://arxiv.org/abs/2309.06103
The Complex Langevin (CL) method to simulate `complex probabilities', ideally produces expectation values for the observables that converge to a limit equal to the expectation values obtained with the original complex `probability' measure. The situa
Externí odkaz:
http://arxiv.org/abs/2304.00563
Autor:
Hansen, Michael W., Sexty, Dénes
Lattice simulations of non-zero density QCD introduce the so-called sign problem (complex or negative probabilities), which invalidates importance sampling methods. To circumvent this, we use the Complex Langevin Equation (CLE), to measure the bounda
Externí odkaz:
http://arxiv.org/abs/2212.12029
Autor:
Kara, Ruben, Borsanyi, Szabolcs, Fodor, Zoltan, Godzieba, Daniel A., Parotto, Paolo, Sexty, Denes
QCD with infinite heavy quark masses exhibits a first-order thermal transition which is driven by the spontaneous breaking of the global $\mathcal{Z}_3$ center symmetry. We analyze the corresponding order parameter, namely the Polyakov loop and its m
Externí odkaz:
http://arxiv.org/abs/2212.10155
Autor:
Kara, Ruben, Borsanyi, Szabolcs, Fodor, Zoltan, Guenther, Jana N., Parotto, Paolo, Pasztor, Attila, Sexty, Denes
QCD with heavy dynamical quarks exhibits a first order thermal transition which is driven by the spontaneous breaking of the global $\mathcal{Z}_3$ center symmetry. Decreasing the quark masses weakens the transition until the corresponding latent hea
Externí odkaz:
http://arxiv.org/abs/2112.04192
In complex Langevin simulations, the insufficient decay of the probability density near infinity leads to boundary terms that spoil the formal argument for correctness. We present a formulation of this term that is cheaply measurable in lattice model
Externí odkaz:
http://arxiv.org/abs/2112.02924
Autor:
Borsanyi, Szablocs, Sexty, Dénes
The topological susceptibility of the SU(3) pure gauge theory is calculated in the deconfined phase at temperatures up to $10T_c$. At such large temperatures the susceptibility is suppressed, topologically non-trivial configurations are extremely rar
Externí odkaz:
http://arxiv.org/abs/2101.03383