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arXiv · 2502.06679

The chiral critical point from the strong coupling expansion

Jangho Kim·Pratitee Pattanaik·Wolfgang Unger
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Abstract

The strong coupling expansion for staggered fermions allows for Monte Carlo simulations using a dual representation. It has a mild sign problem for low values of the inverse gauge coupling $β$, hence the phase diagram in the full $μ_B - T$ plane can be evaluated. We have extended this framework to include $\mathcal{O}(β)$ and $\mathcal{O}(β^2)$ corrections, by mapping the degrees of freedom to a vertex model. We present results on the $β$-dependence of the chiral critical point from those simulations.

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Jangho Kim, Pratitee Pattanaik, Wolfgang Unger. 2025-02-10. The chiral critical point from the strong coupling expansion. https://arxiv.org/abs/2502.06679

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