TRG computations show that Lüscher's admissibility condition moves the first-order transition of the 2D U(1) gauge-Higgs model at theta = pi closer to theta = pi under the field-theoretical definition, and locate the critical endpoint at M_c = 2.9974765(14).
Dual simulation of the 2-dimensional lattice U(1) gauge-Higgs model with a topological term
1 Pith paper cite this work. Polarity classification is still indexing.
1
Pith paper citing it
abstract
The 2-dimensional U(1) gauge-Higgs model with a topological term is a simple example of a lattice field theory where the complex action problem comes from the topological term. We show that the model can be exactly rewritten in terms of dual variables, such that the dual partition sum has only real and positive contributions. Using suitable algorithms the dual formulation allows for Monte Carlo simulations at arbitrary values of the vacuum angle. We demonstrate the feasibility of the dual simulation and study the continuum limit, as well as the phase diagram of the system.
fields
hep-lat 1years
2025 1verdicts
CONDITIONAL 1representative citing papers
citing papers explorer
-
Tensor renormalization group study of the two-dimensional lattice U(1) gauge-Higgs model with a topological $\theta$ term under L\"uscher's admissibility condition
TRG computations show that Lüscher's admissibility condition moves the first-order transition of the 2D U(1) gauge-Higgs model at theta = pi closer to theta = pi under the field-theoretical definition, and locate the critical endpoint at M_c = 2.9974765(14).