SM&FT 2019 - The XVIII Workshop on Statistical Mechanics and nonpertubative Field Theory

Session

Session 8

12 Dec 2019, 17:00

Salone degli Affreschi, Palazzo Ateneo Università "Aldo Moro" Bari

Conveners

Session 8

• Leonardo Angelini (BA)

48. Acoustic Emissions in Compression of Building Materials: Q-Statistics Enables the Anticipation of the Breakdown Point

Alessandro Pluchino

12/12/2019, 17:00

In this work we present new experimental results concerning Acoustic Emission (AE) recorded during cyclic compression tests on two different kinds of brittle building materials, namely concrete and basalt. The AE inter-event times were investigated through a non-extensive statistical mechanics analysis which shows that their decumulative probability distributions follow q-exponential laws. The...

50. Quantum statistics in Network Geometry with Fractional Flavor

Andrea Rapisarda (CT)

12/12/2019, 17:15

Quantum statistics have been shown to emerge to describe the statistical properties of growing networks when nodes are associated to a fitness value [1]. Recently it has been shown that quantum statistics emerge also in a growing simplicial complex model called Network Geometry with Flavor (NGF) which allows for the description of many-body interactions between the nodes [2,3]. This model...

58. Parton distribution functions from Lattice QCD

Savvas Zafeiropoulos (CPT Marseille CNRS)

12/12/2019, 17:30

The light-cone definition of Parton Distribution Functions (PDFs) does not allow for a direct ab initio determination employing methods of Lattice QCD simulations that naturally take place in Euclidean spacetime. In this presentation we focus on pseudo-PDFs where the starting point is the equal time hadronic matrix element with the quark and anti-quark fields separated by a finite distance. We...

44. Dual formulations of gauge models with static quarks at finite baryon density

Oleg Borisenko (Bogolyubov Institute for Theoretical Physics, Academy of Sciences of Ukraine)

12/12/2019, 18:00

Construction of dual formulations of various abelian Z(N) and non-abelian U(N) and SU(N) lattice gauge theories with static quarks in the presence of non-vanishing chemical potential is reviewed. As an application of the dual formulation for models at finite baryon density we 1) present an exact solution of the Polyakov loop models in the large-N limit and 2) discuss the numerical computations...

15. The confining color field in the SU(3) gauge theory

Volodymyr Chelnokov (Istituto Nazionale di Fisica Nucleare)

12/12/2019, 18:15

The spatial distribution of the chromoelectric field in presence of a static quark-antiquark pair in the SU(3) gauge theory is determined from the numerical simulations. The resulting field can be decomposed into the perturbative part, and the nonperturbative confining field, the last being oriented almost completely along the quark-antiquark line. A way of performing this decomposition using...

46. Potential and Width of Effective Strings Beyond Noninteracting Models

Ahmed Bakry

We investigate the Casimir energy and the width of the quantum delocalization of the QCD flux-tube for string actions beyond free Nambu-Goto approximation. We perform our numerical study on the 4-dim pure SU(3) Yang-Mills lattice gauge theory and focus on color source separation distance before the string breaks in full QCD.

The analysis of the precise numerical data of the quark-antiquark...