The Lattice Journal Club talks are intended to give all members of our lattice group (Bachelor, Master, PhD, PostDoc) the opportunity to discuss together topics/papers that are of general interest in our field. The speaker should give an introductory presentation of the topic/paper he/she selected, highlighting why it is interesting and what might be the troublesome points that deserve a discussion. The style of the Journal Club is informal and its aim pedagogical, encouraging discussions within the group on topics of relevance.

Speakers who signed up for talks without having specified a title, are expected to send a title for their seminar latest on the Monday before their talk!

Group members will get a reminder per every week in which we will have a seminar!

Everybody is encouraged to sign up for talks and/or suggest topics using the relevant forms in the webpage any time, not just during the organizational meeting!

For remote followers, here is the Zoom link

About

Journal Club talks are expected to last about 45 minutes. A discussion session will follow, which is expected to last about 15 minutes. Speakers are free to choose whether to deliver a blackboard talk or a beamer talk and hybrid versions are also welcome.

Guidelines for talks and detailed information on the format can be found in our Journal Club Guidelines.

Our guidelines are also summarized in a nice Presentation on Journal Club Guidelines.

Schedule

Suggested topics/papers

Introduction/overview of widely used lattice discretizations

• Wilson fermions and chiral symmetry (Secs. 5.2 and aspects from 7.1 to 7.3 in Gattringer, Lang) basic
• Staggered fermions (Sec. 10.1 in Gattringer, Lang and further literature) intermediate
• Twisted mass fermions (introduction: Sec. 10.3 in Gattringer, Lang) basic
• Overlap fermions (Lecture Notes) intermediate
• Domain wall fermions (further literature) challenging

Introduction/overview of widely used lattice methods

• Scale setting basic
• Chiral perturbation theory (Lecture Notes, More Lecture Notes and ref 46-49 of Gattringer) intermediate
• Schroedinger functional intermediate
• Large N volume reduction intermediate
• Lefschetz thimbles intermediate
  • Basic reference (thimble definition, application for 0d model; comparison to complex Langevin)
  • More advanced reference (analysis of 4d complex scalar field)
• Topology and the topological freezing problem intermediate
  • Basic reference (topology on the lattice, critical slowing-down; definition of autocorrelation times)
  • More advanced reference (solutions: open BC, non-orientable manifolds)

Introduction/overview of widely used MC algorithms, smoothing and data analysis techniques

• Ulli Wolff method for error analysis basic
• HMC algorithm (Secs. 8.1 and 8.2 in Gattringer, Lang) basic
• RHMC algorithm (Alessandro Sciarra's Thesis) basic
• Wilson flow intermediate
  • Basic reference
  • Perturbative analysis
  • Applications ( and a more recent overview)
• The density of states approach to the sign problem (recent review) intermediate
• Domain decomposition algorithms intermediate

Further topics

• Chiral spin symmetry basic
• Chemical potential on the lattice (introduction from Secs. 12.2-3 in Gattringer) basic
• Isospin chemical potential off and on the lattice intermediate
• Spectroscopy with Wilson fermions (introduction from Secs. 6.1 to 6.3 in Gattringer, Lang) basic
• Pion spectroscopy with staggered fermions (Tim's Thesis) intermediate
• Confinement and flux tubes (up and including Sec 3.2) intermediate intermediate
• Axion phenomenology in Lattice QCD intermediate
• Restrictions on Symmetry Breaking in Vector-Like Gauge Theories intermediate
• Neutron electric dipole moment in Lattice QCD intermediate
• Chiral symmetry restoration intermediate
• Lattice determination of α_s intermediate
• Continuum/chiral limit of Wilson fermions intermediate
• Renormalization group intermediate
• CL²QCD (Alessandro Sciarra's Thesis) intermediate
• The chiral magnetic effect intermediate
• Triangulation challenging
• Tensor networks challenging
• Resurgence and Lefschetz thimbles in QFT challenging