TY - JOUR

T1 - Investigating the sign problem for two-dimensional N = (2,2) and N = (8,8) lattice super Yang–Mills theories

AU - Galvez, Richard

AU - Catterall, Simon

AU - Joseph, Anosh

AU - Mehta, Dhagash

PY - 2011/1/1

Y1 - 2011/1/1

N2 - Recently there has been some controversy in the literature concerning the existence of a fermion sign problem in the N = (2,2) supersymmetric Yang–Mills (SYM) theories on the lattice. In this work, we address this issue by conducting Monte Carlo simulations not only for N = (2,2) but also for N = (8,8) SYM in two dimensions for the U(N) theories with N = 2, using the new ideas derived from topological twisting followed by geometric discretization. Our results from simulations provide the evidence that these theories do not suffer from a sign problem as the continuum limit is approached. These results thus boost confidence that these new lattice formulations can be used successfully to explore the nonperturbative aspects of the four-dimensional N = 4 SYM theory.

AB - Recently there has been some controversy in the literature concerning the existence of a fermion sign problem in the N = (2,2) supersymmetric Yang–Mills (SYM) theories on the lattice. In this work, we address this issue by conducting Monte Carlo simulations not only for N = (2,2) but also for N = (8,8) SYM in two dimensions for the U(N) theories with N = 2, using the new ideas derived from topological twisting followed by geometric discretization. Our results from simulations provide the evidence that these theories do not suffer from a sign problem as the continuum limit is approached. These results thus boost confidence that these new lattice formulations can be used successfully to explore the nonperturbative aspects of the four-dimensional N = 4 SYM theory.

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M3 - Conference article

AN - SCOPUS:84924547277

VL - 139

JO - Proceedings of Science

JF - Proceedings of Science

SN - 1824-8039

T2 - 29th International Symposium on Lattice Field Theory, Lattice 2011

Y2 - 10 July 2011 through 16 July 2011

ER -