5 papers
Taylor expansions on Lefschetz thimbles (and not only that)
Francesco Di Renzo, Simran Singh, Kevin Zambello
Thimble regularisation is a possible solution to the sign problem, which is evaded by formulating quantum field theories on manifolds where the imaginary part of the action stays c…
One-thimble regularisation of lattice field theories: is it only a dream?
Francesco Di Renzo, Simran Singh, Kevin Zambello
Lefschetz thimbles regularisation of (lattice) field theories was put forward as a possible solution to the sign problem. Despite elegant and conceptually simple, it has many subtl…
On the Lefschetz thimbles structure of the Thirring model
Kevin Zambello, Francesco Di Renzo
The complexification of field variables is an elegant approach to attack the sign problem. In one approach one integrates on Lefschetz thimbles: over them, the imaginary part of th…
Towards Lefschetz thimbles regularization of heavy-dense QCD
Kevin Zambello, Francesco Di Renzo
At finite density, lattice simulations are hindered by the well-known sign problem: for finite chemical potentials, the QCD action becomes complex and the Boltzmann weight …
The curvature of the chiral pseudocritical line from LQCD: analytic continuation and Taylor expansion compared
Claudio Bonati, Massimo D'Elia, Francesco Negro +2
We present a determination of the curvature of the chiral pseudocritical line from lattice QCD at the physical point obtained by adopting the Taylor expansion approac…