143 citations · 959 across the 35 of their papers we have counts for
7 papers · 1 filter
An update on supersphere non linear sigma model on the lattice
Ilaria Costa, Valentina Forini, Agostino Patella +1
We consider the discretized version of the sigma-model with supersphere target space and present a preliminary numerical study of bosonic and fermioni…
Supersphere non-linear sigma model on the lattice
Ilaria Costa, Valentina Forini, Ben Hoare +3
Two-dimensional non-linear sigma models are exactly solvable theories and have many applications, from statistical mechanics to their use as QCD toy models. We consider a su…
Holography on the lattice: the string worldsheet perspective
Gabriel Bliard, Ilaria Costa, Valentina Forini
We review the study, on the lattice, of the Green-Schwarz gauge-fixed string action describing worldsheet fluctuations about the minimal surface holographically dual to the null cu…
Lattice perturbation theory for the null cusp string
Gabriel Bliard, Ilaria Costa, Valentina Forini +1
We reconsider the problem of discretising the worldsheet for the gauge-fixed Green-Schwarz superstring on a null cusp background, and present a setup which fully preserves its glob…
A note on improved stochastic trace estimation for fermionic string fluctuations
Valentina Forini, Bjoern Leder, Nils Wauschkuhn
We report on the use of a stochastic trace estimator algorithm, based on mutually unbiased bases, for evaluating the trace of a matrix differential operator appearing in the contex…
Strings on the lattice and AdS/CFT
Valentina Forini, Lorenzo Bianchi, Bjoern Leder +2
We present a new auxiliary field representation for the four-fermi term of the gauge-fixed Green-Schwarz superstring action which describes fluctuations around the null-cusp backgr…