2 citations · 3 across the 5 of their papers we have counts for
5 papers
Bilinear correlations in Fluctuating Gaussian States with anti-unitary symmetries
Xu Zhang
We study bilinear order-parameter correlations in a general class of sign problem-free systems that are described by what we call Fluctuating Gaussian States (FGS) with anti-unitar…
Quantum Monte Carlo fermion spectroscopy of a non-compact CP model
Xu Zhang, Nick Bultinck
We study a model describing electrons coupled to anti-ferromagnetic spin fluctuations, and consider the situation where hedgehog defects in the order parameter field are suppressed…
Perfect transmission of a Dirac particle in one-dimension double square barrier
Xu Zhang, Qiang Gu
Dirac particles can undergo perfect transmission through a sufficiently high potential barrier in the Klein zone. Although the perfect Klein tunneling (often referred to as the Kle…
Strange metal and Fermi arcs from disordering spin stripes
Xu Zhang, Nick Bultinck
We revisit the effective theory for fluctuating spin stripes coupled to a Fermi surface, and consider the parameter regime where a spin nematic phase intervenes between the spin de…
Constraints from anti-unitary symmetries on phase diagrams of sign problem-free models
Xu Zhang, Nick Bultinck
A powerful way to guarantee the absence of a sign problem in determinantal quantum Monte Carlo simulations is imposing a particular type of anti-unitary symmetries. It is shown tha…