Nuclear and Chiral transition using the strong coupling expansion of Lattice QCD

In this thesis, we investigate the nuclear and chiral transitions of lattice QCD at large baryon chemical potential, where conventional lattice QCD methods encounter the sign problem. To address this, we utilize the dual representation of lattice QCD obtained via the strong coupling expansion. The nuclear transition is studied in the strong coupling limit for large quark masses, and the necessary algorithmic developments for this regime are presented. Using the dual formulation with staggered quarks, we examine the quark mass dependence of the baryon mass and nuclear transition, allowing us to quantify nuclear interactions and compare the results with mean field predictions.<br /><br /> To incorporate higher-order gauge corrections required for actual QCD, a Vertex Model is developed from the Tensor Network representation of Lattice QCD. This model, which involves significantly more vertices than previous studies, is simulated using a parallelized ergodic algorithm designed for efficient computation on larger lattices at finite gauge coupling. The model includes higher-order corrections, allowing us to study the dependence of the second-order chiral transition temperature aTc in the chiral limit on β . We also compare results across different truncations of the strong coupling expansion.

Level thesis:degree_level

thesis.doctoral

Grantor dc:publisher

Universität Bielefeld

Year

2024

Author dc:creator

• Pattanaik, Pratitee

Repository record source_url

https://pub.uni-bielefeld.de/record/2999732

OAI identifier oai:identifier

oai:pub.uni-bielefeld.de:2999732