Sources of multiparticle correlations: a microscopic perspective

Light scalar tetraquarks from a holographic perspective

We discuss how a dominant tetraquark component of the lightest scalar mesons may emerge in AdS/QCD gravity duals. In particular, we show that the exceptionally strong binding required to render the tetraquark ground state lighter than the lowest-lying scalar quark-antiquark nonet can be holographically encoded into bulk-mass corrections for the tetraquark's dual mode. The latter are argued to originate from the anomalous dimension of the corresponding four-quark interpolator. To provide a concrete example, we implement this mechanism into the dilaton soft-wall dual for holographic QCD. Prevent…

Relativistic fluid dynamics and its extensions as an effective field theory

We examine hydrodynamics from the perspective of an effective field theory. The microscopic scale in this case is the thermalization scale, and the macroscopic scale is the gradient, with thermal fluctuations playing the role of $\hbar$. We argue that this method can be applied both, to consistently include thermal fluctuations in the theory, and to extend hydrodynamics to systems whose microscopic structure is non-trivial. For the latter, we discuss the case of spin polarization and gauge theories.

夸克离子物质与介子-夸克交叉转变的超冷原子视角

Quarkyonic matter and hadron-quark crossover from an ultracold atom perspective

本文从超冷原子实验的角度出发，提出一种场论框架来描述介子-夸克交叉转变，通过类比玻色-爱因斯坦凝聚体到巴丁-库珀-施里弗（BEC-BCS）交叉转变，揭示了速度声峰和重子动量壳结构的三重波动效应，为夸克离子物质模型提供了微观推导。