Publications [#336985] of Shailesh Chandrasekharan

Papers Published

1. Ayyar, V; Chandrasekharan, S; Rantaharju, J, Benchmark results in the 2D lattice Thirring model with a chemical potential, vol. 97 no. 5 (March, 2018) [doi]
   (last updated on 2025/07/04)

   Abstract:
   We study the two-dimensional lattice Thirring model in the presence of a fermion chemical potential. Our model is asymptotically free and contains massive fermions that mimic a baryon and light bosons that mimic pions. Hence, it is a useful toy model for QCD, especially since it, too, suffers from a sign problem in the auxiliary field formulation in the presence of a fermion chemical potential. In this work, we formulate the model in both the world line and fermion-bag representations and show that the sign problem can be completely eliminated with open boundary conditions when the fermions are massless. Hence, we are able accurately compute a variety of interesting quantities in the model, and these results could provide benchmarks for other methods that are being developed to solve the sign problem in QCD.