A machine learning approach to the classification of phase transitions in many flavor QCD

Anirban Lahiri; Christian Schmidt; Frithjof Karsch; Marius Neumann

A machine learning approach to the classification of phase transitions in many flavor QCD

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arxiv 2211.16232 v1 pith:WCMHWSOW submitted 2022-11-29 hep-lat hep-ph

A machine learning approach to the classification of phase transitions in many flavor QCD

Frithjof Karsch , Anirban Lahiri , Marius Neumann , Christian Schmidt This is my paper

classification hep-lat hep-ph

keywords modelchiralcondensatedistributionflavorslearningmachinemass

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Normalizing flows are generative machine learning models which can efficiently approximate probability distributions, using only given samples of a distribution. This architecture is used to interpolate the chiral condensate obtained from QCD simulations with five degenerate quark flavors in the HISQ action. From this a model for the probability distribution of the chiral condensate as function of lattice volume, quark mass and gauge coupling is obtained. Using the model, first order and crossover regions can be classified and the boundary between these regions can be marked by a critical mass. An extension of this model to studies of phase transitions in QCD with variable number of flavors is expected to be possible.

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