TY  - THES
AB  - Lattice QCD at finite baryon density suffers from the numerical finite density sign
problem. Strong coupling methods, expanding in the inverse gauge coupling, give rise
to alternative representations of the partition function that can make the sign problem
milder. This Habilitation discusses the strong coupling methods developed by the author
and colleagues to study lattice QCD at vanishing and non-vanishing baryon density. The
main results summarized and covered in the attached papers are (1) chiral symmetry
breaking and its restoration at zero temperature for a large number of flavors, (2) the
QCD phase diagram, in particular the location of the chiral/nuclear critical endpoint,
(3) bulk thermodynamics and (4) Hamiltonian formulation and Quantum Monte Carlo
simulations. Most of the results were obtained via a dual formulation for lattice QCD
derived from a strong coupling expansion. All results are limited to the strong coupling
regime, i.e. valid on coarse lattices, where the sign problem is under control.
DA  - 2021
DO  - 10.4119/unibi/2957461
LA  - eng
PY  - 2021
TI  - Strong coupling methods for lattice QCD
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-29574612
Y2  - 2024-11-22T16:51:46
ER  -